Bowenia serrulata (W.Bull) Chamb., Bot. Gaz. 54: 419. (1912).
Types: BAS: B. spectabilis var. serrulata
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Bowenia spectabilis Hook. ex Hook.f., Bot. Mag. 89: t. 5398. (1863).
Types: LT: Bot. Mag. 89: t. 5398 (1863)
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Ceratozamia alvarezii Pérez-Farr., Vovides & Iglesias, Novon 9(3) 410-413, fig. 1. (1999).
Types: H: CHIP
Distribution: Mexico (Chiapas)
IUCN Red List Status: Endangered; A2acd; B1ab(i,iii,v)+2ab(i,iii,v); C1

Ceratozamia aurantiaca Pérez-Farr., Gut.Ortega, J.L.Haynes & Vovides, Taxonomy 1(3): 243-255. (2021).
Types: HT:HEM
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Not Evaluated

Ceratozamia becerrae Pérez-Farr., Vovides & Schutzman, Bot. J. Linn. Soc. 146(1): 123-128, figs. 1-7. (2004).
Types: H: XAL
Distribution: Mexico (Chiapas, Tabasco)
IUCN Red List Status: Not Evaluated

Ceratozamia brevifrons Miq., Tijdschr. Wis- Natuurk. Wetensch. Eerste Kl. Kon. Ned. Inst. Wetensch. 1(1): 41-42. (1847).
Types: N: XAL
Distribution: Mexico (Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia chamberlainii Mart.-Domínguez, Nic.-Mor. & D.W.Stev., Phytotaxa 317(1): 17-28. (2017).
Types: H:CIB
Distribution: Mexico (Hidalgo, Querétaro, San Luis Potosí)
IUCN Red List Status: Not Evaluated

Ceratozamia chimalapensis Pérez-Farr. & Vovides, Bot. J. Linn. Soc. 157(2): 169-175, figs. 1-4. (2008).
Types: H: HEM
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Not Evaluated

Ceratozamia decumbens Vovides, Avendaño, Pérez-Farr. & Gonz.-Astorga, Novon 18(1): 109-114, fig. 1. (2008).
Types: H: XAL
Distribution: Mexico (Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia delucana Vázq.Torres, A.Moretti & Carvajal-Hern., Delpinoa 50-51: 129-133, figs. 1-5 (2008-2009 issued December 2013). (2013).
Types: H:CIB
Distribution: Mexico (Puebla, Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia dominguezii Pérez-Farr. & Gut.Ortega, Taxonomy 1(4): 345-349, figs. 2, 5-9. (2021).
Types: HT:HEM
Distribution: Mexico (Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia euryphyllidia Vázq.Torres, Sabato & D.W.Stev., Brittonia 38(1): 17-26, figs. 1-5. (1986).
Types: H: NY
Distribution: Mexico (Oaxaca, Veracruz)
IUCN Red List Status: Endangered; A4cd; B1ab(iii,v)

Ceratozamia fuscoviridis W.Bull, Retail List [Bull] No. 154: 4. (1879).
Types: NT:K
Distribution: Mexico (Hidalgo, Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia hildae G.P.Landry & M.C.Wilson, Brittonia 31(3): 422-424, fig. 1. (1979).
Types: H: GH
Distribution: Mexico (Querétaro, San Luis Potosí)
IUCN Red List Status: Critically Endangered; A2acd

Ceratozamia hondurensis J.L.Haynes, Whitelock, Schutzman & R.S.Adams, Cycad Newslett. 31 (2-3): 16-21, figs. 1-2. (2008).
Types: H: EAP
Distribution: Honduras (Atlántida)
IUCN Red List Status: Not Evaluated

Ceratozamia huastecorum Avendaño, Vovides & Cast.-Campos, Bot. J. Linn. Soc. 141(3): 395-398, figs. 1-2. (2003).
Types: H: XAL
Distribution: Mexico (Veracruz)
IUCN Red List Status: Critically Endangered; B1ab(iii,v)

Ceratozamia kuesteriana Regel, Bull. Soc. Imp. Naturalistes Moscou 30(1): 187-188, t. 3, fig. 6; t. 4, fig. 22. (1857).
Types: H: LE
Distribution: Mexico (Tamaulipas)
IUCN Red List Status: Critically Endangered; A2cd

Ceratozamia latifolia Miq., Tijdschr. Wis- Natuurk. Wetensch. Eerste Kl. Kon. Ned. Inst. Wetensch. 1(1): 206. (1847).
Types: N: NY
Distribution: Mexico (San Luis Potosí)
IUCN Red List Status: Not Evaluated

Ceratozamia leptoceras Mart.-Domínguez, Nic.-Mor., D.W.Stev. & Lorea-Hern., Phytokeys 156:1-25. (2020).
Types: HT:CIB
Distribution: Mexico (Guerrero)
IUCN Red List Status: Not Evaluated

Ceratozamia matudae Lundell, Lloydia 2(2): 75-76. (1939).
Types: H: MICH
Distribution: Mexico (Chiapas)
IUCN Red List Status: Endangered; B1ab(ii,iii,v)

Ceratozamia mexicana Brongn., Ann. Sci. Nat., Bot. ser. 3, 5: 7-8, t.. 1 1. (1846).
Types: LT:P
Distribution: Mexico (Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia miqueliana H.Wendl., Index Palm.: 68. (1854).
Types: N:NY
Distribution: Mexico (Chiapas, Tabasco, Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia mirandae Vovides, Pérez-Farr. & Iglesias, Bot. J. Linn. Soc. 137(1): 81-85, fig. 1-2. (2001).
Types: HT:CHIP
Distribution: Mexico (Chiapas)
IUCN Red List Status: Endangered; B1ab(iii,v); C1

Ceratozamia mixeorum Chemnick, T.J.Greg. & Salas-Mor., Phytologia 83(1): 47-52 (1997 publ. 1998). (1998).
Types: LT:XAL
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Endangered; A2acd+4acd; B1ab(i,ii,iii,iv,v)

Ceratozamia morettii Vázq.Torres & Vovides, Novon 8(1): 87-90, fig. 1. (1998).
Types: H:CIB
Distribution: Mexico (Veracruz)
IUCN Red List Status: Endangered; A2c; B1ab(iii,v)

Ceratozamia norstogii D.W.Stev., Brittonia 34(2): 181-184, figs. 1-2. (1982).
Types: H: NY
Distribution: Mexico (Chiapas, Oaxaca)
IUCN Red List Status: Endangered; A2acd; B1ab(iii,v)

Ceratozamia oliversacksii D.W.Stev., Mart.-Domínguez & Nic.-Mor., Kew Bull. (https://doi:10.1007/S12225-021-09992-X): 1-9 Figs 1,2,3a, 4. (2022).
Types: H:CIB
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Not Evaluated

Ceratozamia osbornei D.W.Stev., Mart.-Domínguez & Nic.-Mor., PhytoKeys 208: 68 (-69, figs. 5-6, 22). (2022).
Types: HT:NY [NY01340569]
Distribution: Belize (Cayo, Toledo)
IUCN Red List Status: Not Evaluated

Ceratozamia reesii Vovides, Pérez-Farr. & Gut.Ortega, Phytotaxa 575(3): 241 (224-252; figs. 1b, 2, 3, 4d-f, map). (2022).
Types: HT:HEM
Distribution: Mexico (San Luis Potosí)
IUCN Red List Status: Not Evaluated

Ceratozamia robusta Miq., Tijdschr. Wis-Natuurk. Wetensch. Eerste Kl. Kon. Ned. Inst. Wetensch. 1(1): 42-43. (1847).
Types: N: NY
Distribution: Guatemala (Alta Verapaz, Petén, Quiché, Huehuetenango, Izabal), Mexico (Chiapas)
IUCN Red List Status: Endangered; A2acd

Ceratozamia rosea Pérez-Farr., Gut.Ortega & Vovides, Phytotaxa 595(1): 73-88 (79, figs. 6-11). (2023).
Types: HT:HEM
Distribution: Mexico (Chiapas)
IUCN Red List Status: Not Evaluated

Ceratozamia sabatoi Vovides, Vázq.Torres, Schutzman & Iglesias, Novon 3(4): 502-504, fig. 1. (1993).
Types: H: XAL
Distribution: Mexico (Hidalgo, Querétaro)
IUCN Red List Status: Endangered; A2acd; B1ab(i,ii,iii,v)

Ceratozamia sancheziae Pérez-Farr., Gut.Ortega & Vovides, Phytotaxa 500(3): 201-216, figs. 2 (a-f) & 7 (a-d). (2021).
Types: HT:HEM
Distribution: Mexico (Chiapas)
IUCN Red List Status: Not Evaluated

Ceratozamia santillanii Pérez-Farr. & Vovides, Syst. Biodivers. 7(4): 433-443, figs. 3, 7. (2009).
Types: H: HEM
Distribution: Mexico (Chiapas)
IUCN Red List Status: Not Evaluated

Ceratozamia schiblii Pérez-Farr. & Gut.Ortega, Taxonomy 2: 324–338. (2022).
Types: HT:HEM
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Not Evaluated

Ceratozamia subroseophylla Mart.-Domínguez & Nic.-Mor., Phytotaxa 268(1): 25-45. (2016).
Types: H:CIB
Distribution: Mexico (Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia tenuis (Dyer) D.W.Stev. & Vovides, Bot. Sci. 94(2): 419-429. (2016).
Types: BAS: Ceratozamia mexicana var. tenuis
Distribution: Mexico (Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia totonacorum Mart.-Domínguez & Nic.-Mor., Brittonia 69(4): 518. [epublished 31 May 2017]. (2017).
Types: H:CIB
Distribution: Mexico (Hidalgo, Puebla, Veracruz)
IUCN Red List Status: Not Evaluated

Ceratozamia vovidesii Pérez-Farr. & Iglesias, Bot. J. Linn. Soc. 153(4): 393-400, figs. 1-6. (2007).
Types: H: HEM
Distribution: Guatemala (Huehuetenango), Mexico (Chiapas)
IUCN Red List Status: Vulnerable; D2

Ceratozamia whitelockiana Chemnick & T.J.Greg., Phytologia 79(1): 51-57 (1995 publ. 1996). (1996).
Types: LT: FTG
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Endangered; A2c; B1ab(i,ii,iii,v)

Ceratozamia zaragozae Medellín, Brittonia 15(2): 175-176, figs. 1-4. (1963).
Types: H: SLPM
Distribution: Mexico (San Luis Potosí)
IUCN Red List Status: Endangered; B1ab(v)

Ceratozamia zoquorum Pérez-Farr., Vovides & Iglesias, Bot. J. Linn. Soc. 137(1): 77-80, fig.1. (2001).
Types: H: CHIP
Distribution: Mexico (Chiapas, Tabasco)
IUCN Red List Status: Not Evaluated

Cycas aculeata K.D.Hill & T.H.Nguyên, Bot. Rev. (Lancaster) 70(2): 149-150. (2004).
Types: H: HN
Distribution: Vietnam (Da Nang)
IUCN Red List Status: Vulnerable; D2

Cycas aenigma K.D.Hill & A.Lindstr., Telopea 12(1): 130-132, fig. 3. (2008).
Types: H: LBC
Distribution: Philippines (Palawan - cult.)
IUCN Red List Status: Not Evaluated

Cycas angulata R.Br., Prodr. Fl. Nov. Holland. 1: 348. (1810).
Types: H: BM
Distribution: Australia (Northern Territory, Queensland)
IUCN Red List Status: Not Evaluated

Cycas annaikalensis Rita Singh & P.Radha, Brittonia 58(2): 119-123, figs. 1-2. (2006).
Types: H: IUPH
Distribution: India (Kerala)
IUCN Red List Status: Critically Endangered; B1ab(iii,v)+2ab(iii,v)

Cycas apoa K.D.Hill, Austral. Syst. Bot. 7(6): 553-554, fig. 9. (1994).
Types: H: CANB
Distribution: Indonesia (Maluku Utara, Nusa Tenggara Timur, Papua, Papua Barat), Papua New Guinea (West Sepik, Morobe)
IUCN Red List Status: Near Threatened

Cycas arenicola K.D.Hill, Telopea 5(2): 419-422. (1993).
Types: H: NSW
Distribution: Australia (Northern Territory)
IUCN Red List Status: Near Threatened

Cycas armstrongii Miq., Arch. Néerl. Sci. Exact. Nat. 3: 235-236. (1868).
Types: H: U
Distribution: Australia (Northern Territory)
IUCN Red List Status: Vulnerable; A4cde

Cycas arnhemica K.D.Hill, Telopea 5(4): 693-696, fig. 1. (1994).
Types: H: NSW
Distribution: Australia (Northern Territory)
IUCN Red List Status: Least Concern

Cycas badensis K.D.Hill, Telopea 7(1): 20-21, fig. 9. (1996).
Types: H: BRI
Distribution: Australia (Queensland [Badu and Moa Islands])
IUCN Red List Status: Near Threatened

Cycas baiseensis Y.Y.Huang, Y.C.Zhong & Z.F.Lu, Mem. New York Bot. Gard. 117: 504–518. (2018).
Types: H: SZECH
Distribution: China (Guangxi)
IUCN Red List Status: Not Evaluated

Cycas balansae Warb., Monsunia 1: 179. (1900).
Types: LT: P
Distribution: China (Guangxi), Vietnam (Lang Son, Quang Ninh, Thai Nguyen, Vinh Phuc)
IUCN Red List Status: Near Threatened

Cycas basaltica C.A.Gardner, For. Dep. Bull., W. Austral. 32: 31. (1923).
Types: H: PERTH
Distribution: Australia (Western Australia)
IUCN Red List Status: Least Concern

Cycas beddomei Dyer, Trans. Linn. Soc. London, Bot. 2(5): 85-86, pl. 17. (1883).
Types: LT: K
Distribution: India (Andhra Pradesh)
IUCN Red List Status: Endangered; B1ab(ii,iii,v)+2ab(ii,iii,v)

Cycas bifida (Dyer) K.D.Hill, Bot. Rev. (Lancaster) 70(2): 161-163. (2004).
Types: BAS: C. rumphii var. bifida
Distribution: China (Guangxi), Vietnam (Cao Bang, Lang Son, Tuyen Quang)
IUCN Red List Status: Vulnerable; A2cd

Cycas bougainvilleana K.D.Hill, Austral. Syst. Bot. 7(6): 557-560, fig. 11. (1994).
Types: H: NSW
Distribution: Papua New Guinea (Bougainville, New Britain), Solomon Islands
IUCN Red List Status: Near Threatened

Cycas brachycantha K.D.Hill, T.H.Nguyên & P.K.Lôc, Bot. Rev. (Lancaster) 70(2): 155-157, fig. 6. (2004).
Types: H: HN
Distribution: Vietnam (Bac Kan)
IUCN Red List Status: Near Threatened

Cycas brunnea K.D.Hill, Telopea 5(1): 200-201, fig. 15. (1992).
Types: H: DNA
Distribution: Australia (Queensland)
IUCN Red List Status: Not Evaluated

Cycas cairnsiana F.Muell., Fragm. (Mueller) 10(83): 63, 121. (1876).
Types: H: MEL
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; D2

Cycas calcicola Maconochie, J. Adelaide Bot. Gard. 1(3): 175, fig. 1. (1978).
Types: H: DNA
Distribution: Australia (Northern Territory)
IUCN Red List Status: Least Concern

Cycas campestris K.D.Hill, Austral. Syst. Bot. 7(6): 538-540. (1994).
Types: H: NSW
Distribution: Papua New Guinea (Central, Gulf)
IUCN Red List Status: Near Threatened; B1b(iii,v)

Cycas canalis K.D.Hill, Telopea 5(4): 698-700, fig. 4a-d. (1994).
Types: H: NSW
Distribution: Australia (Northern Territory)
IUCN Red List Status: Least Concern

Cycas candida K.D.Hill, Telopea 10(2): 607-611, figs. 1-2. (2004).
Types: H: NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Endangered; B1ab(iii,v)+2ab(iii,v)

Cycas cantafolia Jutta, K.L.Chew & Saw, Blumea 55(3): 249-252, figs. 1-2. (2010).
Types: H: KEP
Distribution: Malaysia (Johor)
IUCN Red List Status: Not Evaluated

Cycas chamaoensis K.D.Hill, Brittonia 51(1): 58, fig. 6. (1999).
Types: H: NSW
Distribution: Thailand (Chantaburi)
IUCN Red List Status: Critically Endangered; A2ad; B1ab(i,ii,iv,v); C2a(i); D

Cycas changjiangensis N.Liu, Acta Phytotax. Sin. 36(6): 552-554, fig. 1. (1998).
Types: H: IBSC
Distribution: China (Hainan)
IUCN Red List Status: Endangered; A2acd+4acd; B1ab(iii,v)+2ab(iii,v)

Cycas chenii X.Gong & Wei Zhou, J. Syst. Evol. 53(6): 497. [epublished 15 Apr 2015]. (2015).
Types: H:KUN
Distribution: China (Yunnan)
IUCN Red List Status: Not Evaluated

Cycas chevalieri Leandri, Fl. Indo-Chine 5(10): 1092. (1931).
Types: LT: P
Distribution: Vietnam (Ha Tinh, Nghe An, Quang Binh, Quang Tri)
IUCN Red List Status: Near Threatened

Cycas circinalis L., Sp. Pl. [Linnaeus] 2: 1188. (1753).
Types: LT: t. 19, in Rheede, Hort. Malab, 3 (1682)
Distribution: India (Andra Pradesh, Karnataka, Kerala, Maharashtra, Tamil Nadu)
IUCN Red List Status: Endangered; A2acd

Cycas clivicola K.D.Hill, Brittonia 51(1): 62-63, fig. 8a-d, g-h. (1999).
Types: H: NSW
Distribution: Cambodia, Malaysia (Kedah, Perak, Selangor), Thailand (Chumphon, Krabi, Narathiwat, Phangnga, Phuket, Prachin Buri, Rayong, Ranong, Trang), Vietnam (An Giang, Kien Giang)
IUCN Red List Status: Least Concern

Cycas collina K.D.Hill, T.H.Nguyên & P.K.Lôc, Bot. Rev. (Lancaster) 70(2): 142-144, fig. 2. (2004).
Types: H: HN
Distribution: Vietnam (Son La)
IUCN Red List Status: Vulnerable; A2cd+4cd; C1

Cycas condaoensis K.D.Hill & S.L.Yang, Bot. Rev. (Lancaster) 70(2): 178-179, fig. 14. (2004).
Types: H: K
Distribution: Vietnam (Ba Ria-Vung Tau)
IUCN Red List Status: Vulnerable; D2

Cycas conferta Chirgwin, J. Adelaide Bot. Gard. 15(2): 147. (1993).
Types: H: DNA
Distribution: Australia (Northern Territory)
IUCN Red List Status: Near Threatened

Cycas couttsiana K.D.Hill, Telopea 5(1): 197-198, fig. 13. (1992).
Types: H: NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Near Threatened

Cycas cupida P.I.Forst., Austrobaileya 6(1): 153, figs. 1-5. (2001).
Types: H: BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; D2

Cycas curranii (J.Schust.) K.D.Hill, Proc. Third Int. Conf. Cycad Biol.: 150. (1995).
Types: BAS: C. circinalis subsp. riuminiana var. curranii
Distribution: Philippines (Palawan)
IUCN Red List Status: Critically Endangered; A4acd; B2ab(ii,iii,v)

Cycas debaoensis Y.C.Zhong & C.J.Chen, Acta Phytotax. Sin. 35(6): 571. (1997).
Types: H: PE
Distribution: China (Guangxi)
IUCN Red List Status: Critically Endangered; B2ab(i,ii,iii,iv,v)

Cycas desolata P.I.Forst., Austrobaileya 4(3): 345-352, figs. 1-5. (1995).
Types: H: BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; D2

Cycas dharmrajii L.J.Singh, Nordic J. Bot. 35(1): 69-76. doi:10.1111/njb.01284. (2017).
Types: H:CAL
Distribution: India (Andaman and Nicobar Islands)
IUCN Red List Status: Not Evaluated

Cycas diannanensis Z.T.Guan & G.D.Tao, Sichuan Forest. Surv. Design 1995(4): 1. (1995).
Types: H: IBSC
Distribution: China (Yunnan), ?N Vietnam
IUCN Red List Status: Vulnerable; A2c; C1

Cycas distans P.I.Forst. & B.Gray, Austrobaileya 10(1): 74-84. (2017).
Types: H:BRI
Distribution: Australia (Qld)
IUCN Red List Status: Not Evaluated

Cycas divyadarshanii Khuraijam & Rita Singh, Cycads 5(1): 59-76. (2020).
Types: H:IPUH
Distribution: China (Yunnan), India (Manipur), Laos, Myanmar, Thailand (Chiang Mai, Kanchanaburi, Mae Hong Son, Phetchabun, Phrae, Sukhothai), Vietnam (Binh Dinh, Gia Lai, Kon Tum, Lam Dong, Ninh Thuan, Phu Yen, Quang Nam, Quang Ngai)
IUCN Red List Status: Not Evaluated

Cycas dolichophylla K.D.Hill, T.H.Nguyên & P.K.Lôc, Bot. Rev. (Lancaster) 70(2): 157-160, fig. 7. (2004).
Types: H: HN
Distribution: China (Guangxi, Yunnan), ?Laos, Vietnam (Bac Kan, Cao Bang, Ha Giang, Hoa Binh, Lai Chau, Lao Cai, Ninh Binh, Son La, Thai Nguyen, Thanh Hoa, Tuyen Quang)
IUCN Red List Status: Near Threatened

Cycas edentata de Laub., Blumea 43(2): 372. (1998).
Types: H: L
Distribution: Indonesia (Bali, Banten, Bengkulu, Jawa Barat, Jawa Tengah, Jawa Timur, Kepulauan Riau, Lampung, Sumatra Utara), Malaysia (Johore, Kedah, Malacca, Negri Sembilan, Pahang, Perak, Sabah, Sarawak, Terengganu), Myanmar, Philippines (Basilan, Cebu, Masbate, Davao del Sur, Davao Oriental, Oriental Mindoro, Negros Oriental, Palawan, Panay, Quezon, Sulu), Singapore (Changi), Thailand (Chumphon, Narathiwat, Phang Nga, Phuket, Satun, Trang, Trat), Vietnam (Kien Giang)
IUCN Red List Status: Not Evaluated

Cycas elephantipes A.Lindstr. & K.D.Hill, Brittonia 54(4): 301, fig. 3 (2002 publ. 2003). (2003).
Types: H: BKF
Distribution: Thailand (Chaiyaphum)
IUCN Red List Status: Endangered; A2d; B1ab(v)

Cycas elongata (Leandri) D.Yue Wang, in Cycads in China (eds. F.X. Wang & H.B. Liang) : 51. (1996).
Types: BAS: C. pectinata var. elongata
Distribution: Vietnam (Binh Dinh, Khanh Hoa, Ninh Thuan, Phu Yen, Quang Ngai)
IUCN Red List Status: Endangered; A2cd+4cd

Cycas falcata K.D.Hill, Kew Bull. 54(1): 209. (1999).
Types: H: K
Distribution: Indonesia (Sulawesi Selatan, Sulawesi Tenggara)
IUCN Red List Status: Vulnerable; B1ab(iii,v)

Cycas ferruginea F.N.Wei, Guihaia 14(4): 300, fig. 1. (1994).
Types: H: IBK
Distribution: China (Guangxi), Vietnam (Lang Son, Thai Nguyen)
IUCN Red List Status: Near Threatened

Cycas flabellata Agoo & Madulid & J.R.Callado, Mem. New York Bot. Gard. 117: 533-535, fig. 34-2. (2019).
Types: H: PNH
Distribution: Philippines (Davao Oriental, Misamis Oriental)
IUCN Red List Status: Not Evaluated

Cycas fugax K.D.Hill, T.H.Nguyên & P.K.Lôc, Bot. Rev. (Lancaster) 70(2): 145-146, figs. 2-3. (2004).
Types: H: HN
Distribution: Vietnam (Phu Tho)
IUCN Red List Status: Critically Endangered; A2cd; B1ab(i,ii,iii,iv,v)

Cycas furfuracea W.Fitzg., J. Proc. Roy. Soc. Western Australia 3: 108. (1918).
Types: LT: NSW
Distribution: Australia (WA)
IUCN Red List Status: Least Concern

Cycas glauca Hort. ex Miq., Comm. Phytogr.: 127. (1840).
Types: LT: U
Distribution: Timor-Leste, Indonesia (Nusa Tenggara Timur)
IUCN Red List Status: Data Deficient

Cycas guizhouensis K.M.Lan & R.F.Zou, Acta Phytotax. Sin. 21(2): 209-210. (1983).
Types: H:PE
Distribution: China (Guangxi, Guizhou, Yunnan)
IUCN Red List Status: Vulnerable; A4acd

Cycas hoabinhensis P.K.Lôc & T.H.Nguyên, Bot. Rev. (Lancaster) 70(2): 153-155, fig. 5. (2004).
Types: H:HNU
Distribution: Vietnam (Ha Nam, Ha Tay, Hoa Binh, Ninh Binh)
IUCN Red List Status: Endangered; A4cd

Cycas hongheensis S.Y.Yang & S.L.Yang ex D.Yue Wang, in Cycads in China (eds. F.X. Wang & H.B. Liang) : 62. (1996).
Types: H:Panzhihua Inst. Hort.
Distribution: China (Yunnan)
IUCN Red List Status: Critically Endangered; A2cd; C1

Cycas indica A.Lindstr. & K.D.Hill, Telopea 11(4): 481-483, fig. 3. (2007).
Types: H:E
Distribution: India (Karnataka)
IUCN Red List Status: Not Evaluated

Cycas inermis Lour., Fl. Cochinch. 2: 632. (1793).
Types: H:BM
Distribution: Laos (Khammouan), Vietnam (Da Nang, Dong Nai, Khanh Hoa, Quang Nam)
IUCN Red List Status: Vulnerable; A2cd+4cd

Cycas javana (Miq.) de Laub. ex D.Yue Wang, in Cycads in China (eds. F.X. Wang & H.B. Liang) : 65. (1996).
Types: BAS: C. circinalis var. javana
Distribution: Indonesia (Jawa Barat, Jawa Tengah, Jawa Timur)
IUCN Red List Status: Endangered; A4c

Cycas lacrimans A.Lindstr. & K.D.Hill, Telopea 12(1): 136-138, fig. 5. (2008).
Types: H:NY
Distribution: Philippines (Davao Oriental)
IUCN Red List Status: Not Evaluated

Cycas lane-poolei C.A.Gardner, For. Dep. Bull., W. Austral. 32: 30-32, fig. e. (1923).
Types: H:PERTH
Distribution: Australia (WA)
IUCN Red List Status: Least Concern

Cycas laotica Aver., T.H.Nguyên & S.K.Nguyên, Nordic J. Bot. [epublished 10 Sep 2014, DOI: 10.1111/njb.00498]. (2014).
Types:
Distribution: Laos (Khammouan)
IUCN Red List Status: Not Evaluated

Cycas lindstromii S.L.Yang, K.D.Hill & T.H.Nguyên, Novon 7(2): 213-215, fig. 1. (1997).
Types: H:FTG
Distribution: Vietnam (Ba Ria-Vung Tau, Binh Thuan, Khanh Hoa, Ninh Thuan)
IUCN Red List Status: Endangered; A2acd+4acd; B1ab(iii,v)

Cycas maconochiei Chirgwin & K.D.Hill, Telopea 7(1): 48-49, fig. 22. (1996).
Types: H:NSW
Distribution: Australia (Northern Territory)
IUCN Red List Status: Least Concern

Cycas maconochiei subsp. lanata K.D.Hill, Telopea 7(1): 49-51. (1996).
Types: H:DNA
Distribution: Australia (Northern Territory)
IUCN Red List Status: Least Concern

Cycas maconochiei subsp. maconochiei , Telopea 7(1): 48-49, fig. 22. (1996).
Types: AUT
Distribution: Australia (Northern Territory)
IUCN Red List Status: Near Threatened

Cycas maconochiei subsp. viridis K.D.Hill, Telopea 7(1) : 51-52, fig. 23. (1996).
Types: H:NSW
Distribution: Australia (Northern Territory)
IUCN Red List Status: Least Concern

Cycas macrocarpa Griff., Not. Pl. Asiat. 4: 11-14, pl. 362, fig. 2. (1854).
Types: H:K
Distribution: Laos (Vientiane), Malaysia (Kelantan, Pahang, Terengganu), Thailand (Chantaburi, Chumphon, Narathiwat, Ranong)
IUCN Red List Status: Vulnerable; A2c

Cycas media R.Br., Prodr. Fl. Nov. Holland. 1: 348. (1810).
Types: H:BM
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Cycas media subsp. banksii K.D.Hill, Telopea 7(1): 15-16. (1996).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Cycas media subsp. ensata K.D.Hill, Telopea 7(1): 14-15, fig. 6. (1996).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Cycas media subsp. media , Telopea 7(1): 12-14, fig. 5. (1996).
Types: AUT
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Cycas megacarpa K.D.Hill, Telopea 5(1): 188-189, fig. 5. (1992).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; A2c

Cycas micholitzii Dyer, Gard. Chron., ser. 3 38: 142-144, figs. 48-49. (1905).
Types: H:K
Distribution: Laos (Champasak, Saravan), Vietnam (Dac Lak, Gia Lai, Kon Tum)
IUCN Red List Status: Vulnerable; A2cd+4cd

Cycas micronesica K.D.Hill, Austral. Syst. Bot. 7(6): 554-556, fig. 10. (1994).
Types: H:NSW
Distribution: Guam, Micronesia (Yap), Northern Mariana Islands (Rota), Palau
IUCN Red List Status: Endangered; A4ace

Cycas mindanaensis Agoo, Madulid & J.R.Callado, Mem. New York Bot. Gard. 117: 531-533, fig. 34-1. (2019).
Types: H: PNH
Distribution: Phillippines (Davao Oriental, Davao del Norte)
IUCN Red List Status: Not Evaluated

Cycas montana A.Lindstr. & K.D.Hill, Telopea 12(3): 396-397, fig. 3. (2009).
Types: H:BO
Distribution: Indonesia (Nusa Tenggara Timur)
IUCN Red List Status: Not Evaluated

Cycas multifrondis D.Yue Wang, in Cycads in China (eds. F.X. Wang & H.B. Liang) : 80. (1996).
Types: H:SYS
Distribution: China (Yunnan)
IUCN Red List Status: Not Evaluated

Cycas multipinnata C.J.Chen & S.Y.Yang, Acta Phytotax. Sin. 32(3): 239, 480-481. (1994).
Types: H:PE
Distribution: China (Yunnan), Vietnam (Yen Bai)
IUCN Red List Status: Endangered; A2cd; B2ab(i,ii,iii,iv,v); C1

Cycas nathorstii J.Schust., in Engler, Pflanzenr. 99: 76, fig. 10e. (1932).
Types: LT:G
Distribution: India (Tamil Nadu), N Sri Lanka
IUCN Red List Status: Vulnerable; A2cd+4cd

Cycas nayagarhensis Rita Singh, P.Radha & Khuraijam, Asian J. Conservation Biol. 4(1): 3-14, figs. 4-6. (2015).
Types: H:CAL
Distribution: India (Odisha)
IUCN Red List Status: Not Evaluated

Cycas nitida K.D.Hill & A.Lindstr., Telopea 12(1): 142-143, fig. 6. (2008).
Types: H:NSW
Distribution: Philippines (Albay, Cagayan, Quezon, Northern Samar)
IUCN Red List Status: Not Evaluated

Cycas nongnoochiae K.D.Hill, Brittonia 51(1): 60-62, fig. 7. (1999).
Types: H:NSW
Distribution: Laos (Vientiane), Thailand (Nakhon Sawan)
IUCN Red List Status: Vulnerable; A2d; B1ab(v)

Cycas ophiolitica K.D.Hill, Telopea 5(1): 190-191, fig. 7. (1992).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; A4c

Cycas orientis K.D.Hill, Telopea 5(4): 696-697, fig. 3. (1994).
Types: H:NSW
Distribution: Australia (Northern Territory)
IUCN Red List Status: Least Concern

Cycas orixensis (Haines) Rita Singh & Khuraijam, Asian J. Conservation Biol. 4(1): 3-14, figs. 1-3. (2015).
Types: BAS: Cycas circinalis var. orixensis Haines
Distribution: India (Odisha)
IUCN Red List Status: Not Evaluated

Cycas pachypoda K.D.Hill, Bot. Rev. (Lancaster) 70(2): 176-178, fig. 13. (2004).
Types: H:HN
Distribution: Vietnam (Binh Thuan, Ninh Thuan)
IUCN Red List Status: Critically Endangered; A4acd

Cycas panzhihuaensis L.Zhou & S.Y.Yang, Acta Phytotax. Sin. 19(3): 335, t. 10, figs. 1-6; t. 11, figs. 1-10. (1981).
Types: H:PE
Distribution: China (Sichuan, Yunnan)
IUCN Red List Status: Vulnerable; B1ab(iii,v)

Cycas papuana F.Muell., Descr. Notes Papuan Pl. 4: 71-72. (1876).
Types: LT:MEL
Distribution: Australia (Queensland [Prince of Wales Island]), Indonesia (Papua), Papua New Guinea (Western)
IUCN Red List Status: Near Threatened

Cycas pectinata Buch.-Ham., Mem. Wern. Nat. Hist. Soc. 5(2): 322-323. (1826).
Types: LT:K
Distribution: Bangladesh, Bhutan, India (Assam, Bihar, Meghalaya, Sikkim, West Bengal), Nepal
IUCN Red List Status: Vulnerable; A2c

Cycas petraea A.Lindstr. & K.D.Hill, Brittonia 54(4): 299, fig. 1 (2002 publ. 2003). (2003).
Types: H:BKF
Distribution: Laos (Vientiane),Thailand (Loei)
IUCN Red List Status: Near Threatened

Cycas platyphylla K.D.Hill, Telopea 5(1): 193-194, fig. 9. (1992).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Endangered; A4d

Cycas pranburiensis S.L.Yang, W.Tang, K.D.Hill & Vatch., Brittonia 51(1): 44-47, fig. 1. (1999).
Types: H:K
Distribution: Thailand (Prachuap Khiri Khan)
IUCN Red List Status: Vulnerable; D2

Cycas pruinosa Maconochie, J. Adelaide Bot. Gard. 1(3): 177-178, fig. 2. (1978).
Types: H:DNA
Distribution: Australia (Northern Territory, WA)
IUCN Red List Status: Least Concern

Cycas pschannae R.C.Srivast. & L.J.Singh, Int. J. Curr. Res. Biosci. Plant Biol. 2 (8): 35-37. (2015).
Types: H:CAL
Distribution: India (Andaman and Nicobar Islands)
IUCN Red List Status: Not Evaluated

Cycas revoluta Thunb., Verh. Holl. Maatsch Weetensch. Haarlem 20(2): 424, 426-427. (1782).
Types: LT:UPS
Distribution: China (Fujian), Japan (Ryukyu Islands)
IUCN Red List Status: Least Concern

Cycas riuminiana Porte ex Regel, Gartenflora 12: 16-17. (1863).
Types: H:LE
Distribution: Philippines (Bataan, Batanes, Batangas, Cagayan, Cavite, Isabela, Laguna, Pampanga)
IUCN Red List Status: Endangered; A4acd; B2ab(ii,iii,iv)

Cycas rumphii Miq., Bull. Sci. Phys. Nat. Néerl. 2: 45. (1839).
Types: LT: t. 23, Rumphius Herb. Amb. 1741
Distribution: Australia (Ashmore Reef, Christmas Island), Indonesia (Jawa Timur, Kalimantan Barat, Maluku, Maluku Utara, Papua, Papua Barat, Sulawesi Utara, Sulawesi Tengah, Sulawesi Selatan, Sulawesi Tenggara), Papua New Guinea (East New Britain, Madang, New Ireland, West Sepik)
IUCN Red List Status: Near Threatened

Cycas sancti-lasallei Agoo & Madulid, Blumea 57(2): 131. (2012).
Types: H:PNH
Distribution: Philippines (Misamis Oriental)
IUCN Red List Status: Not Evaluated

Cycas saxatilis K.D.Hill & A.Lindstr., Telopea 12(1): 128-129, fig. 2. (2008).
Types: H:L
Distribution: Philippines (Palawan)
IUCN Red List Status: Vulnerable; D2

Cycas schumanniana Lauterb., Fl. Schutzgeb. Südsee: 154-155. (1900).
Types: LT:WRSL
Distribution: Papua New Guinea (Eastern Highlands, Madang, Morobe)
IUCN Red List Status: Near Threatened

Cycas scratchleyana F.Muell., Vict. Naturalist 2(2): 18-19. (1885).
Types: H:MEL
Distribution: Australia (Queensland [Murray Island]), Indonesia (Maluku, Maluku Utara, Papua, Papua Barat), Papua New Guinea (Central, Gulf, Milne Bay, Western)
IUCN Red List Status: Near Threatened

Cycas seemannii A.Braun, Sitzungsber. Ges. Naturf. Freunde Berlin: 114-115. (1876).
Types: LT:K
Distribution: Fiji, New Caledonia, Tonga, Vanuatu
IUCN Red List Status: Vulnerable; A4cd

Cycas segmentifida D.Yue Wang & C.Y.Deng, Encephalartos 43: 11-14. (1995).
Types: H:SZG
Distribution: China (Guangxi, Guizhou, Yunnan), ?N Vietnam
IUCN Red List Status: Vulnerable; A2c

Cycas semota K.D.Hill, Telopea 7(1): 23-26, fig. 11. (1996).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; D2

Cycas seshachalamensis P.V.C.Rao, N.V.S.Prasad, P.M.Babu, K.Prassad & Prasanna, Asian J. Conservation Biol. 5(1): 55-58, figs. 1-2. (2016).
Types: H:CAL
Distribution: India (Andhra Pradesh)
IUCN Red List Status: Not Evaluated

Cycas sexseminifera F.N.Wei, Guihaia 16(1): 1. (1996).
Types: H:IBK
Distribution: China (Guangxi), Vietnam (Cao Bang, Ninh Binh, Thanh Hoa)
IUCN Red List Status: Near Threatened

Cycas siamensis Miq., Bot. Zeitung (Berlin) 21: 334. (1863).
Types: H:U
Distribution: Cambodia, Laos (Champasak, Saravan), Myanmar, Thailand (Chachoengsao, Chaiyaphum, Chon Buri, Kanchanaburi, Lampang, Nakhon Ratchasima, Phetchabun, Ratchaburi, Sakon Nakhon, Tak, Uthai Thani, Uttaridit), Vietnam (Dac Lak, Gia Lai, Kon Tum, Nghe An, Tha
IUCN Red List Status: Vulnerable; A2cd

Cycas silvestris K.D.Hill, Telopea 5(1): 181-182, fig. 1. (1992).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; D2

Cycas simplicipinna (Smitinand) K.D.Hill, Proc. Third Int. Conf. Cycad Biol.: 150. (1995).
Types: BAS: C. micholitzii var. simplicipinna
Distribution: China (Yunnan), Laos (Saravan), ?Myanmar, Thailand (Chiang Mai, Loei, Mae Hong Song, Phrae), Vietnam (Quang Tri)
IUCN Red List Status: Near Threatened

Cycas sphaerica Roxb., Fl. Ind. (Roxburgh) 3: 747. (1832).
Types: LT:BM
Distribution: India (Andhra Pradesh, Karnataka, Tamil Nadu)
IUCN Red List Status: Data Deficient

Cycas sundaica Miq. ex A.Lindstr. & K.D.Hill, Telopea 12(3): 408-410, fig. 6. (2009).
Types: H:BO
Distribution: Indonesia (Nusa Tenggara Barat, Nusa Tenggara Timur)
IUCN Red List Status: Not Evaluated

Cycas szechuanensis W.C.Cheng & L.K.Fu, Acta Phytotax. Sin. 13(4): 81, t. 1, figs. 7-8. (1975).
Types: H:PE
Distribution: China (Fujian)
IUCN Red List Status: Critically Endangered; A2abcde; C1

Cycas taitungensis C.F.Shen, K.D.Hill, C.H.Tsou & C.J.Chen, Bot. Bull. Acad. Sin. 35(2): 135-138. (1994).
Types: H:HAST
Distribution: China (Taiwan)
IUCN Red List Status: Endangered; A3e; B1ab(v)

Cycas taiwaniana Carruth., J. Bot. 31: 1-3, pl. 331. (1893).
Types: H:BM
Distribution: China (Fujian, Guangdong)
IUCN Red List Status: Endangered; A2acd

Cycas tanqingii D.Yue Wang, in Cycads in China (eds. F.X. Wang & H.B. Liang) : 134, fig. 4. (1996).
Types: H:SZG
Distribution: China (Yunnan), ?Vietnam (Lai Chau)
IUCN Red List Status: Near Threatened

Cycas tansachana K.D.Hill & S.L.Yang, Brittonia 51(1): 65-66. (1999).
Types: H:NSW
Distribution: Thailand (Saraburi)
IUCN Red List Status: Critically Endangered; A3cd+4cd; B1ab(i,ii,iii,v)

Cycas terryana P.I.Forst., Austrobaileya 8(3): 356-363, t.1, figs. 1-4. (2011).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Not Evaluated

Cycas thouarsii R.Br., Prodr. Fl. Nov. Holland: 347. (1810).
Types: ?H:P
Distribution: Comoros, Kenya, Madagascar & Tanzania (Zanzibar & mainland)
IUCN Red List Status: Least Concern

Cycas tropophylla K.D.Hill & P.K.Lôc, Bot. Rev. (Lancaster) 70(2): 168-170, fig. 10. (2004).
Types: H:HN
Distribution: Vietnam (Hai Phong, Quang Ninh)
IUCN Red List Status: Near Threatened

Cycas tuckeri K.D.Hill, Telopea 7(1): 20-23, fig. 10. (1996).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; D2

Cycas vespertilio A.Lindstr. & K.D.Hill, Telopea 12(1): 134-136, fig. 4. (2008).
Types: H:LBC
Distribution: Philippines (Cebu, Iloilo, Leyte, Marinduque, Mindoro Oriental, Negros Oriental, Samar)
IUCN Red List Status: Not Evaluated

Cycas wadei Merr., Philipp. J. Sci. 60(3): 234-236, pls 1-4. (1936).
Types: LT:NY
Distribution: Philippines (Palawan)
IUCN Red List Status: Critically Endangered; B1ab(iii,v)

Cycas xipholepis K.D.Hill, Telopea 7(1): 32-33, fig. 15. (1996).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Cycas yorkiana K.D.Hill, Telopea 7(1): 18-19, fig. 8. (1996).
Types: H:NSW
Distribution: Australia (Queensland)
IUCN Red List Status: Near Threatened; B1b(iii)

Cycas zambalensis Madulid & Agoo, Blumea 50(3): 519-522. fig. 1.. (2005).
Types: H:PNH
Distribution: Philippines (Zambales)
IUCN Red List Status: Critically Endangered; A4acd

Cycas zeylanica (J.Schust.) A.Lindstr. & K.D.Hill, Novon 12(2): 238. (2002).
Types: BAS: C. rumphii subsp. zeylanica
Distribution: India (Andaman and Nicobar Islands), S Sri Lanka
IUCN Red List Status: Critically Endangered; A2ac

Dioon angustifolium Miq., Tijdschr. Wis- Natuurk. Wetensch. Eerste Kl. Kon. Ned. Inst. Wetensch. 1(1): 37-38. (1847).
Types: LT:K
Distribution: Mexico (Nuevo León, Tamaulipas)
IUCN Red List Status: Vulnerable; A2cd+4cd

Dioon argenteum T.J.Greg., Chemnick, Salas-Mor. & Vovides, Bot. J. Linn. Soc. 141(4): 471-476, figs. 1-8. (2003).
Types: H:XAL
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Vulnerable; B1ab(iii,v)

Dioon califanoi De Luca & Sabato, Brittonia 31(1): 170-172, figs. 2-3. (1979).
Types: H:NAP
Distribution: Mexico (Oaxaca, Puebla)
IUCN Red List Status: Endangered; A2cd; B1ab(i,ii,iii,v)

Dioon caputoi De Luca, Sabato & Vázq.Torres, Brittonia 32(1): 44-46, figs. 3-4. (1980).
Types: H:XALU
Distribution: Mexico (Oaxaca, Puebla)
IUCN Red List Status: Endangered; A2acd

Dioon edule Lindl., Edwards’s Bot. Reg. 29: misc. 59-60. (1843).
Types: H:CGE
Distribution: Mexico (Hidalgo, Querétaro, San Luis Potosí, Tamaulipas, Veracruz)
IUCN Red List Status: Near Threatened; A2cd

Dioon holmgrenii De Luca, Sabato & Vázq.Torres, Brittonia 33(4): 552-554, figs. 1-2. (1981).
Types: H:XALU
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Vulnerable; B1ab(iii)+2ab(iii)

Dioon mejiae Standl. & L.O.Williams, Ceiba 1(1): 36-38. (1950).
Types: H:US
Distribution: Honduras (Colón, Olancho, Yoro)
IUCN Red List Status: Endangered; A2acd+3cd+4acd; B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)

Dioon merolae De Luca, Sabato & Vázq.Torres, Brittonia 33(2): 180-184, figs. 2-3. (1981).
Types: H:NAP
Distribution: Mexico (Chiapas, Oaxaca)
IUCN Red List Status: Vulnerable; A2cd; C2a(i)

Dioon oaxacensis Gut.Ortega, Pérez-Farr. & Vovides, Phytotaxa 474(1): 51-61. (2020).
Types: H:HEM
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Not Evaluated

Dioon planifolium Salas-Mor., Chemnick & T.J.Greg., Cact. Succ. J. (Los Angeles) 88(1): 35-42. (2016).
Types: H:MEXU
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Not Evaluated

Dioon purpusii Rose, Contr. U.S. Natl. Herb. 12(7): 260-261. (1909).
Types: H:US
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Endangered; B1ab(v)

Dioon rzedowskii De Luca, A.Moretti, Sabato & Vázq.Torres, Brittonia 32(2): 225-229. (1980).
Types: H:XALU
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Endangered; A2ac+4ac; B1ab(i,iii,iv,v)

Dioon salas-moralesiae Gut.Ortega & Pérez-Farr., Phytotaxa 528(2): 93-110, figs. 10-13. (2021).
Types: HT:HEM;IT:MEXU, XAL
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Not Evaluated

Dioon sonorense (De Luca, Sabato & Vázq.Torres) Chemnick, T.J.Greg. & Salas-Mor., Phytologia 83(1): 1-6 (1997 publ. 1998). (1998).
Types: BAS: D. tomasellii var. sonorense
Distribution: Mexico (Sinaloa, Sonora)
IUCN Red List Status: Endangered; A2cd+4cd

Dioon spinulosum Dyer ex Eichler, Gart.-Zeitung (Berlin) 2: 411-413, 438-439, fig. 80. (1883).
Types: H:K
Distribution: Mexico (Oaxaca, Veracruz)
IUCN Red List Status: Endangered; A2acd+4acd; B1ab(iii,v)

Dioon stevensonii Nic.-Mor. & Vovides, Syst. Biodivers. 7(1): 73-79, figs. 1-2. (2009).
Types: H:XAL
Distribution: Mexico (Guerrero, Michoacán)
IUCN Red List Status: Not Evaluated

Dioon tomasellii De Luca, Sabato & Vázq.Torres, Brittonia 36(3): 225-227, figs. 2-5. (1984).
Types: H:NAP
Distribution: Mexico (Durango, Jalisco, Nayarit, Sinaloa)
IUCN Red List Status: Not Evaluated

Dioon vovidesii Gut.Ortega & Pérez-Farr., Phytotaxa 369(2): 109. 2018 [epublished 13 Sep 2018]. (2018).
Types: H:HEM
Distribution: Mexico (Sonora)
IUCN Red List Status: Not Evaluated

Encephalartos aemulans Vorster, S. African J. Bot. 56(2): 239-243. (1990).
Types: H:PRE
Distribution: South Africa (KwaZulu-Natal)
IUCN Red List Status: Critically Endangered; B1ab(v)+2ab(v)

Encephalartos altensteinii Lehm., Nov. Stirp. Pug. 6: 11, t. 4-5. (1834).
Types: ?LT:tt. 4-5
Distribution: South Africa (E Cape)
IUCN Red List Status: Vulnerable; A2acd

Encephalartos aplanatus Vorster, S. African J. Bot. 62: 57-60. (1996).
Types: H:PRE
Distribution: Eswatini, Mozambique
IUCN Red List Status: Vulnerable; A2cd; B1ab(iii,v)+2ab(iii,v)

Encephalartos arenarius R.A.Dyer, J. S. African Bot. 22(1): 1-4. (1956).
Types: H:PRE
Distribution: South Africa (E Cape)
IUCN Red List Status: Endangered; A2acd; B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v); C1

Encephalartos barteri Carruth. ex Miq., Arch. Néerl. Sci. Exact. Nat. 3: 243. (1868).
Types: IT:K
Distribution: Benin (Bergu), Ghana, Nigeria (Plateau), ?Togo
IUCN Red List Status: Vulnerable; A2cd+4cd

Encephalartos barteri subsp. allochrous L.E.Newton, J. Linn. Soc., Bot. 77(2): 125-129. (1978).
Types: H:K
Distribution: Nigeria (Plateau)
IUCN Red List Status: Endangered; A2cd; B1ab(iii,v)

Encephalartos barteri subsp. barteri , J. Linn. Soc., Bot. 77(2): 125-129. (1978).
Types: AUT
Distribution: Benin (Bergu), Ghana, Nigeria, ?Togo
IUCN Red List Status: Vulnerable; A2cd+4cd

Encephalartos brevifoliolatus Vorster, S. African J. Bot. 62(1): 61-64. (1996).
Types: H:PRE
Distribution: South Africa (Limpopo)
IUCN Red List Status: Extinct in the Wild

Encephalartos bubalinus Melville, Kew Bull. 12(2): 252, fig. 4. (1957).
Types: H:K
Distribution: Kenya (Narok), Tanzania (Arusha)
IUCN Red List Status: Near Threatened

Encephalartos caffer (Thunb.) Lehm., Nov. Stirp. Pug. 6: 14. (1834).
Types: Bas: Cycas caffra
Distribution: South Africa (E Cape)
IUCN Red List Status: Near Threatened; A2cd; B2ab(iii,v)

Encephalartos cerinus Lavranos & D.L.Goode, Durban Mus. Novit. 14: 153– 156. (1989).
Types: H:NH
Distribution: South Africa (KwaZulu-Natal)
IUCN Red List Status: Critically Endangered; A2acd; B1ab(i,ii,v)+2ab(i,ii,v); C2a(i,ii); D

Encephalartos chimanimaniensis R.A.Dyer & I.Verd., Kirkia 7: 147-158. (1969).
Types: H:PRE
Distribution: Mozambique (Manica), Zimbabwe (Manicaland)
IUCN Red List Status: Endangered; B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)

Encephalartos concinnus R.A.Dyer & I.Verd., Kirkia 7: 147-158. (1969).
Types: H:PRE
Distribution: Zimbabwe (Matabeleland South, Midlands and Masvingo)
IUCN Red List Status: Critically Endangered; A4acd

Encephalartos cupidus R.A.Dyer, Bothalia 10(2): 379-383. (1971).
Types: H:PRE
Distribution: South Africa (Mpumalanga)
IUCN Red List Status: Critically Endangered; A2acd+4acd; B1ab(ii,iii,v); C1+2a(i,ii)

Encephalartos cycadifolius (Jacq.) Lehm., Nov. Stirp. Pug. 6: 13. (1834).
Types: BAS: Z. cycadifolia
Distribution: South Africa (E Cape)
IUCN Red List Status: Least Concern

Encephalartos delucanus Malaisse, Sclavo & Crosiers, Ann. Gembloux 98(2): 153-155, fig. 1. (1992).
Types: H:BR
Distribution: Tanzania (Katavi)
IUCN Red List Status: Endangered; C2a(i)

Encephalartos dolomiticus Lavranos & D.L.Goode, Bull. Jard. Bot. Natl. Belg. 58(1-2): 219-224. (1988).
Types: H:NH
Distribution: South Africa (Limpopo)
IUCN Red List Status: Critically Endangered; A2acd+4ad; B2ab(i,ii,iv,v); C1+2a(i); D

Encephalartos dyerianus Lavranos & D.L.Goode, Bull. Jard. Bot. Natl. Belg. 58(1-2): 219-224. (1988).
Types: H:PRE
Distribution: South Africa (Limpopo)
IUCN Red List Status: Critically Endangered; B1ab(v)+2ab(v)

Encephalartos equatorialis P.J.H.Hurter, S. African J. Bot. 61(4): 226-229. (1995).
Types: H:PRE
Distribution: Uganda (Eastern)
IUCN Red List Status: Critically Endangered; B1ab(ii,iii,v)+2ab(ii,iii,v); C1

Encephalartos eugene-maraisii I.Verd., J. S. African Bot. 11(1): 1-3. (1945).
Types: H:PRE
Distribution: South Africa (Limpopo)
IUCN Red List Status: Endangered; A2ad+4ad; B1ab(v)

Encephalartos ferox G.Bertol, Mem. Reale Accad. Sci. Ist. Bologna 3: 264-265. (1851).
Types: ?
Distribution: Mozambique (Gaza, Inhambane, Maputo), South Africa (KwaZulu-Natal)
IUCN Red List Status: Near Threatened; A4cd

Encephalartos ferox subsp. emersus P.Rousseau, Vorster & A.E.van Wyk, Phytotaxa 204(2): 99-115. (2015).
Types: H:PRE
Distribution: Mozambique (Inhambane)
IUCN Red List Status: Not Evaluated

Encephalartos ferox subsp. ferox , Phytotaxa 204(2): 99-115. (2015).
Types:
Distribution: Mozambique (Gaza, Inhambane, Maputo), South Africa (KwaZulu-Natal)
IUCN Red List Status: Not Evaluated

Encephalartos friderici-guilielmi Lehm., Nov. Stirp. Pug. 6: 8, tt. 1-3. (1834).
Types: ?LT:tt. 1-3
Distribution: South Africa (E Cape, KwaZulu-Natal)
IUCN Red List Status: Near Threatened; A2ac+4ac

Encephalartos ghellinckii Lem., Ill. Hort. 14, misc.: 80-81; 15: pl. 567. (1867).
Types: ?NT:pl. 567 in Hort. 15, misc. (1868)
Distribution: South Africa (E Cape, KwaZulu-Natal)
IUCN Red List Status: Vulnerable; C1

Encephalartos gratus Prain, Bull. Misc. Inform. Kew 1916: 181. (1916).
Types: LT:K
Distribution: Malawi (Mulanje), Mozambique (Zambézia)
IUCN Red List Status: Vulnerable; A4cd

Encephalartos heenanii R.A.Dyer, Bothalia 10(4): 539-546. (1972).
Types: H:PRE
Distribution: Eswatini, South Africa (Mpumalanga)
IUCN Red List Status: Extinct in the Wild

Encephalartos hildebrandtii A.Braun & C.D.Bouché, Index Seminum Hort. Bot. Berol. 1874: 18. (1874).
Types: H:B
Distribution: Kenya (Coast), Tanzania (Lushoto, Tanga, Zanzibar Island)
IUCN Red List Status: Near Threatened

Encephalartos hirsutus P.J.H.Hurter, S. African J. Bot. 62(1): 46-48, fig. 1. (1996).
Types: H:PRE
Distribution: South Africa (Limpopo)
IUCN Red List Status: Critically Endangered; A2ad; B2ab(v); C1+2a(i,ii); D

Encephalartos horridus (Jacq.) Lehm., Nov. Stirp. Pug. 6: 14. (1834).
Types: BAS: Z. horrida
Distribution: South Africa (E Cape)
IUCN Red List Status: Endangered; A2acd+4acd

Encephalartos humilis I.Verd., Bothalia 6(1): 220, 241, pl. 3. (1951).
Types: H:PRE
Distribution: South Africa (Mpumalanga)
IUCN Red List Status: Vulnerable; A2acd+4acd; B1ab(iii,v)+2ab(iii,v)

Encephalartos inopinus R.A.Dyer, Bothalia 8(2): 169-170. (1964).
Types: H:PRE
Distribution: South Africa (Limpopo)
IUCN Red List Status: Critically Endangered; A2ad+4ad; B1ab(v)+2ab(v); C2a(i,ii); D

Encephalartos ituriensis Bamps & Lisowski, Mem. New York Bot. Gard. 57: 152-155. (1990).
Types: H: BR
Distribution: Democratic Republic of Congo (Orientale)
IUCN Red List Status: Vulnerable; D1

Encephalartos kisambo Faden & Beentje, Utafiti 2(1): 7-10. (1989).
Types: H:K
Distribution: Kenya (Taita-Taveta), Tanzania (Kilimanjaro, ?Morogoro)
IUCN Red List Status: Endangered; B1ab(ii,iii,v)+2ab(ii,iii,v)

Encephalartos laevifolius Stapf & Burtt Davy, Man. Pl. Transvaal 1: 40, 99. (1926).
Types: H:K
Distribution: Eswatini, South Africa (E Cape, KwaZulu-Natal, Limpopo, Mpumalanga)
IUCN Red List Status: Critically Endangered; A2acde; C1+2a(i,ii); D

Encephalartos lanatus Stapf & Burtt Davy, Man. Pl. Transvaal 1: 40, 99, fig. 4d. (1926).
Types: H:K
Distribution: South Africa (Gauteng, Mpumalanga)
IUCN Red List Status: Vulnerable; B1ab(v)+2ab(v)

Encephalartos latifrons Lehm., Tijdschr. Natuurl. Gesch. Physiol. 4(4): 424, t.9. (1838).
Types: ?LT:t. 9
Distribution: South Africa (E Cape)
IUCN Red List Status: Critically Endangered; A2acd; C1+2a(i)

Encephalartos laurentianus De Wild., Ann. Mus. Congo Belge, Bot. sér. 5, 1(1): 10, t. 25. (1903).
Types: H:BR
Distribution: Angola, Democratic Republic of Congo
IUCN Red List Status: Near Threatened; B1a

Encephalartos lebomboensis I.Verd., Fl. Pl. Africa 27: pls. 1078-1079. (1949).
Types: H:PRE
Distribution: Eswatini, Mozambique, South Africa (KwaZulu-Natal)
IUCN Red List Status: Endangered; A2acd; B1ab(ii,iii,v)+2ab(ii,iii,v)

Encephalartos lehmannii Lehm., Nov. Stirp. Pug. 6: 14. (1834).
Types: ?
Distribution: South Africa (E Cape)
IUCN Red List Status: Vulnerable; A2acd+4acd

Encephalartos longifolius (Jacq.) Lehm., Nov. Stirp. Pug. 6: 14. (1834).
Types: BAS: Z. longifolia
Distribution: South Africa (E Cape)
IUCN Red List Status: Near Threatened; A2ad; B1ab(v)

Encephalartos mackenziei L.E.Newton, Bot. J. Linn. Soc. 140(2): 187-192, figs. 1-6. (2002).
Types: H:EA
Distribution: South Sudan (Eastern Equatoria)
IUCN Red List Status: Near Threatened

Encephalartos macrostrobilus S.Jones & Wynants, Encephalartos 50: 13-17, figs. 1-2. (1997).
Types: H:BR
Distribution: Uganda (Northern)
IUCN Red List Status: Endangered; B1ab(iii,iv,v); C2a(i)

Encephalartos manikensis (Gilliland) Gilliland, Proc. Rhodesia Sci. Assoc. 37: 133-134. (1939).
Types: BAS: E. gratus var. manikensis
Distribution: Mozambique (Manica), Zimbabwe
IUCN Red List Status: Vulnerable; A2acd

Encephalartos marunguensis Devred, Bull. Soc. Roy. Bot. Belgique 91: 104-110. (1958).
Types: H:BR
Distribution: Democratic Republic of Congo (Katanga)
IUCN Red List Status: Vulnerable; B1ab(iii,v)

Encephalartos middelburgensis Vorster, Robbertse & S.van der Westh., S. African J. Bot. 55(1): 122-126. (1989).
Types: H:PRE
Distribution: South Africa (Mpumalanga)
IUCN Red List Status: Critically Endangered; A2acde; C1

Encephalartos msinganus Vorster, S. African J. Bot. 62(2): 67-70. (1996).
Types: H:PRE
Distribution: South Africa (KwaZulu-Natal)
IUCN Red List Status: Critically Endangered; B1ab(iii,v); C2a(ii)

Encephalartos munchii R.A.Dyer & I.Verd., Kirkia 7: 147-158. (1969).
Types: H:PRE
Distribution: Mozambique (Manica)
IUCN Red List Status: Critically Endangered; B1ab(iii,v)+2ab(iii,v)

Encephalartos natalensis R.A.Dyer & I.Verd., Bothalia 6(1): 205-211, pls 1-3. (1951).
Types: H:PRE
Distribution: South Africa (KwaZulu-Natal)
IUCN Red List Status: Vulnerable; A2acd

Encephalartos ngoyanus I.Verd., Fl. Pl. Africa 27: pls 1053-1054. (1949).
Types: ?H:PRE
Distribution: Eswatini, Mozambique, South Africa (KwaZulu-Natal)
IUCN Red List Status: Vulnerable; B1ab(iii,v); C2a(i)

Encephalartos nubimontanus P.J.H.Hurter, Phytologia 78(6): 409-410, fig. 1. (1995).
Types: H:PRE
Distribution: South Africa (Limpopo)
IUCN Red List Status: Extinct in the Wild

Encephalartos paucidentatus Stapf & Burtt Davy, Man. Pl. Transvaal 1: 40, 99, fig. 4a. (1926).
Types: H:PRE
Distribution: Eswatini, South Africa (Mpumalanga)
IUCN Red List Status: Vulnerable; A2ac; B1ab(i,ii,iii,v)+2ab(i,ii,iii,v)

Encephalartos poggei Asch., Verh. Bot. Vereins Prov. Brandenburg 20: 35-36. (1878).
Types: ?
Distribution: Angola (Lunda Sul), Democratic Republic of Congo (Kasai-Occidental, Katanga)
IUCN Red List Status: Least Concern

Encephalartos princeps R.A.Dyer, J. S. African Bot. 31(2): 111-112, pl. 19. (1965).
Types: H:PRE
Distribution: South Africa (E Cape)
IUCN Red List Status: Vulnerable; A4acd; B1ab(iii,v)

Encephalartos pterogonus R.A.Dyer & I.Verd., Kirkia 7: 147-158. (1969).
Types: H:PRE
Distribution: Mozambique (Manica)
IUCN Red List Status: Critically Endangered; B1ab(ii,iii,v)

Encephalartos relictus P.J.H.Hurter, Bothalia 31(2): 197-199. (2001).
Types: H:PRE
Distribution: Eswatini
IUCN Red List Status: Extinct in the Wild

Encephalartos schaijesii Malaisse, Sclavo & Crosiers, Bull. Jard. Bot. Natl. Belg. 62: 215-219. (1993).
Types: H:BR
Distribution:
IUCN Red List Status: Not Evaluated

Encephalartos schmitzii Malaisse, Bull. Jard. Bot. Natl. Belg. 39(4): 401-406. (1969).
Types: H:BR
Distribution: Democratic Republic of Congo (Haut-Katanga), Zambia (Muchinga)
IUCN Red List Status: Vulnerable; B1ab(iii,v)

Encephalartos sclavoi A.Moretti, D.W.Stev. & De Luca, Mem. New York Bot. Gard. 57: 156-161. (1990).
Types: H: K
Distribution: Tanzania (Tanga)
IUCN Red List Status: Critically Endangered; B1ab(iii,v)+2ab(iii,v); D

Encephalartos senticosus Vorster, S. African J. Bot. 62(2): 76-79. (1996).
Types: H:PRE
Distribution: Eswatini, South Africa (KwaZulu-Natal)
IUCN Red List Status: Vulnerable; A2acd

Encephalartos septentrionalis Schweinf., Bot. Zeitung (Berlin) 29(20): 334. (1871).
Types: SYN:K
Distribution: Central African Republic, Democratic Republic of Congo (Orientale), South Sudan (Western Equatoria), Uganda (Northern)
IUCN Red List Status: Near Threatened

Encephalartos tegulaneus Melville, Kew Bull. 12(2): 249, fig. 3. (1957).
Types: H:K
Distribution: Kenya (Eastern, Rift Valley)
IUCN Red List Status: Least Concern

Encephalartos tegulaneus subsp. powysii Miringu & Beentje, J. E. Afr. Nat. Hist. 88: 35. (2000).
Types: H:EA
Distribution: Kenya (Eastern)
IUCN Red List Status: Critically Endangered; B1ab(iii,v)+2ab(iii,v)

Encephalartos tegulaneus subsp. tegulaneus , J. E. Afr. Nat. Hist. 88: 35. (1999).
Types: AUT
Distribution: Kenya (Rift Valley)
IUCN Red List Status: Least Concern

Encephalartos transvenosus Stapf & Burtt Davy, Man. Pl. Transvaal 1: 40, 99, fig. 4b. (1926).
Types: H:PRE
Distribution: South Africa (Limpopo)
IUCN Red List Status: Near Threatened; B1b(iii,v)+2b(iii,v)

Encephalartos trispinosus (Hook.) R.A.Dyer, J. S. African Bot. 31(2): 112-116, pl. 20. (1965).
Types: BAS: E. horridus var. trispinosus
Distribution: South Africa (E Cape)
IUCN Red List Status: Vulnerable; A2acd+4acd; B1ab(iii,v)+2ab(iii,v)

Encephalartos turneri Lavranos & D.L.Goode, Garcia de Orta, Ser. Bot. 7(1-2): 11-14. (1988).
Types: H:LISC
Distribution: Mozambique (Nampula)
IUCN Red List Status: Least Concern

Encephalartos umbeluziensis R.A.Dyer, Fl. Pl. Africa 28: pl. 1100. (1951).
Types: H:PRE
Distribution: Eswatini, Mozambique
IUCN Red List Status: Endangered; B1ab(iii,v)+2ab(iii,v); C1

Encephalartos villosus Lem., Ill. Hort. 14, misc.: 79-80; 15. (1867).
Types: ?
Distribution: Eswatini, South Africa (E Cape, KwaZulu-Natal)
IUCN Red List Status: Least Concern

Encephalartos whitelockii P.J.H.Hurter, Phytologia 78(6): 410-411, fig. 3. (1995).
Types: H:PRE
Distribution: Uganda (Western)
IUCN Red List Status: Critically Endangered; B1ab(ii,iii,v)+2ab(ii,iii,v)

Encephalartos woodii Sander, Gard. Chron., ser. 3 43: 257. (1908).
Types: ?
Distribution: South Africa (KwaZulu-Natal)
IUCN Red List Status: Extinct in the Wild

Lepidozamia hopei Regel, Gartenflora 25: 6. (1876).
Types: ?
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Lepidozamia peroffskyana Regel, Bull. Soc. Imp. Naturalistes Moscou 30(1): 184-185, fig. 21. (1857).
Types: H:LE
Distribution: Australia (New South Wales, Queensland)
IUCN Red List Status: Least Concern

Macrozamia cardiacensis P.I.Forst. & D.L.Jones, Fl. Australia 48: 717. (1998).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; D2

Macrozamia communis L.A.S.Johnson, Proc. Linn. Soc. New South Wales, ser. 2, 84(1): 98. (1959).
Types: H:NSW
Distribution: Australia (New South Wales)
IUCN Red List Status: Least Concern

Macrozamia concinna D.L.Jones, Fl. Australia 48: 718. (1998).
Types: H:BRI
Distribution: Australia (New South Wales)
IUCN Red List Status: Least Concern

Macrozamia conferta D.L.Jones & P.I.Forst., Austrobaileya 4(2): 271-273, fig. 1. (1994).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; A2c; B1ab(iii,v)+2ab(iii,v)

Macrozamia cranei D.L.Jones & P.I.Forst., Austrobaileya 4(2): 273-275, fig. 2. (1994).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Endangered; C1

Macrozamia crassifolia P.I.Forst. & D.L.Jones, Austrobaileya 4(2): 275-276, fig. 3. (1994).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; B1ab(iii,v)

Macrozamia diplomera (F.Muell.) L.A.S.Johnson, Proc. Linn. Soc. New South Wales, ser. 2, 84(1): 98. (1959).
Types: BAS: Encephalartos spiralis var. diplomera
Distribution: Australia (New South Wales)
IUCN Red List Status: Least Concern

Macrozamia douglasii W.Hill ex F.M.Bailey, Syn. Queensl. Fl.: 500. (1883).
Types: LT:K
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Macrozamia dyeri (F.Muell.) C.A.Gardner, Enum. Pl. Austral. Occ.: 3. (1930).
Types: BAS: Encephalartos dyeri
Distribution: Australia (WA)
IUCN Red List Status: Least Concern

Macrozamia elegans K.D.Hill & D.L.Jones, Fl. Australia 48: 718. (1998).
Types: H:NSW
Distribution: Australia (New South Wales)
IUCN Red List Status: Endangered; B1ab(v)

Macrozamia fawcettii C.Moore, J. Proc. Roy. Soc. New S. Wales 17: 120. (1884).
Types: H:NSW
Distribution: Australia (New South Wales)
IUCN Red List Status: Near Threatened; B1ab(v)

Macrozamia fearnsidei D.L.Jones, Austrobaileya 3(3): 481. (1991).
Types: H:CANB
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Macrozamia flexuosa C.Moore, J. Proc. Roy. Soc. New S. Wales 17: 121. (1884).
Types: H:NSW
Distribution: Australia (New South Wales)
IUCN Red List Status: Near Threatened; B1ab(iii,v)+2ab(iii,v)

Macrozamia fraseri Miq., Monogr. Cycad.: 37. (1842).
Types: ?H:MEL
Distribution: Australia (WA)
IUCN Red List Status: Least Concern

Macrozamia glaucophylla D.L.Jones, Fl. Australia 48: 718-719. (1998).
Types: H:CANB
Distribution: Australia (New South Wales)
IUCN Red List Status: Least Concern

Macrozamia heteromera C.Moore, J. Proc. Roy. Soc. New S. Wales 17: 122. (1884).
Types: LT:NSW
Distribution: Australia (New South Wales)
IUCN Red List Status: Least Concern

Macrozamia humilis D.L.Jones, Fl. Australia 48: 719. (1998).
Types: H:CANB
Distribution: Australia (New South Wales)
IUCN Red List Status: Critically Endangered; B1ab(iii)

Macrozamia johnsonii D.L.Jones & K.D.Hill, Telopea 5(1): 31. (1992).
Types: H:CANB
Distribution: Australia (New South Wales)
IUCN Red List Status: Vulnerable; B1ab(iii,v)+2ab(iii,v)

Macrozamia lomandroides D.L.Jones, Austrobaileya 3(3): 483. (1991).
Types: H:CANB
Distribution: Australia (Queensland)
IUCN Red List Status: Endangered; A2cd

Macrozamia longispina P.I.Forst. & D.L.Jones, Fl. Australia 48: 717. (1998).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Near Threatened; B1a+2a

Macrozamia lucida L.A.S.Johnson, Proc. Linn. Soc. New South Wales, ser. 2, 84(1): 102. (1959).
Types: H:NSW
Distribution: Australia (New South Wales, Queensland)
IUCN Red List Status: Least Concern

Macrozamia macdonnellii (F.Muell. ex Miq.) A.DC., Prodr. [A. P. de Candolle] 16(2): 537. (1868).
Types: BAS: Encephalartos macdonnellii
Distribution: Australia (Northern Territory)
IUCN Red List Status: Least Concern

Macrozamia machinii P.I.Forst. & D.L.Jones, Austrobaileya 4(2): 276. (1994).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; B1ab(iii,v)+2ab(iii,v)

Macrozamia macleayi Miq., Arch. Néerl. Sci. Exact. Nat. 3: 250. (1868).
Types: ?H:U
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Macrozamia miquelii (F.Muell.) A.DC., Prodr. [A. P. de Candolle] 16(2): 535. (1868).
Types: BAS: Encephalartos miquelii
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Macrozamia montana K.D.Hill, Fl. Australia 48: 717. (1998).
Types: H:NSW
Distribution: Australia (New South Wales)
IUCN Red List Status: Least Concern

Macrozamia moorei F.Muell., Australas. Chem. Druggist 4: 84. (1881).
Types: ?H:MEL
Distribution: Australia (Queensland)
IUCN Red List Status: Near Threatened; A2c

Macrozamia mountperriensis F.M.Bailey, Syn. Queensl. Fl. Suppl. 1: 50. (1886).
Types: N:CANB
Distribution: Australia (Queensland)
IUCN Red List Status: Least Concern

Macrozamia occidua D.L.Jones & P.I.Forst., Austrobaileya 4(2): 278, fig. 5. (1994).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Vulnerable; D2

Macrozamia parcifolia P.I.Forst. & D.L.Jones, Austrobaileya 4(2): 279-281, fig. 6. (1994).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Endangered; B1ab(iii,v)+2ab(iii,v)

Macrozamia pauli-guilielmi W.Hill & F.Muell., Fragm. (Mueller) 1(4): 86. (1859).
Types: H:MEL
Distribution: Australia (Queensland)
IUCN Red List Status: Endangered; A2cd

Macrozamia platyrhachis F.M.Bailey, Queensland Agric. J. 3: 356. (1898).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Endangered; B1ab(i,ii,iii,v)

Macrozamia plurinervia (L.A.S.Johnson) D.L.Jones, Austrobaileya 3(3): 484. (1991).
Types: BAS: M. pauli-guilielmi subsp. plurinervia
Distribution: Australia (New South Wales, Queensland)
IUCN Red List Status: Endangered; B1ab(ii,iii,v)+2ab(ii,iii,v)

Macrozamia polymorpha D.L.Jones, Fl. Australia 48: 718. (1998).
Types: H:CANB
Distribution: Australia (New South Wales)
IUCN Red List Status: Least Concern

Macrozamia reducta K.D.Hill & D.L.Jones, Fl. Australia 48: 718. (1998).
Types: H:NSW
Distribution: Australia (New South Wales)
IUCN Red List Status: Least Concern

Macrozamia riedlei (Fisch. ex Gaudich.) C.A.Gardner, Enum. Pl. Austral. Occ.: 3. (1930).
Types: BAS: Cycas riedlei
Distribution: Australia (WA)
IUCN Red List Status: Least Concern

Macrozamia secunda C.Moore, J. Proc. Roy. Soc. New S. Wales 17: 120. (1884).
Types: LT:MEL
Distribution: Australia (New South Wales)
IUCN Red List Status: Vulnerable; B2ab(iii,v)

Macrozamia serpentina D.L.Jones & P.I.Forst., Austrobaileya 6(1): 90-92, figs. 20-21. (2001).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Near Threatened; B1b(iii)

Macrozamia spiralis (Salisb.) Miq., Monogr. Cycad.: 36. (1842).
Types: BAS: Z. spiralis
Distribution: Australia (New South Wales)
IUCN Red List Status: Endangered; A2c

Macrozamia stenomera L.A.S.Johnson, Proc. Linn. Soc. New South Wales, ser. 2, 84(1): 106. (1959).
Types: H:NSW
Distribution: Australia (New South Wales)
IUCN Red List Status: Near Threatened; B1b(v)

Macrozamia viridis D.L.Jones & P.I.Forst., Austrobaileya 4(2): 281-283, fig. 7. (1994).
Types: H:BRI
Distribution: Australia (Queensland)
IUCN Red List Status: Endangered; B1ab(iii,v)+2ab(iii,v)

Microcycas calocoma (Miq.) A.DC., Prodr. [A. P. de Candolle] 16(2): 538. (1868).
Types: BAS: Zamia calocoma
Distribution: Cuba (Pinar del Río)
IUCN Red List Status: Critically Endangered; C2a(i)

Stangeria eriopus (Kunze) Baill., Hist. Pl. (Baillon) 12: 68, in adnot.. (1892).
Types: BAS: Lomaria eriopus
Distribution: South Africa (E Cape, KwaZulu-Natal)
IUCN Red List Status: Vulnerable; A2acd+4acd

Zamia acuminata Oerst. ex Dyer, Biol. Cent.-Amer., Bot. 3: 194. (1884).
Types: H:C
Distribution: Costa Rica (San José)
IUCN Red List Status: Not Evaluated

Zamia amazonum D.W.Stev., Fl. Colombia (1983+) 21: 33, fig. 3. (2001).
Types: H:INPA
Distribution: Brazil (Amazonas), Colombia, (Amazonas, Vaupés), Ecuador (Morona-Santiago, Napo, Sucumbíos), Peru (Loreto), S Venezuela
IUCN Red List Status: Least Concern

Zamia amplifolia W.Bull ex Mast., Gard. Chron., n.s., 10(261): 810. (1878).
Types: LT:K
Distribution: Colombia (Valle del Cauca)
IUCN Red List Status: Endangered; B1ab(iii,v)+2ab(iii,v)

Zamia angustifolia Jacq., Collectanea [Jacquin] 3: 263-265. (1791).
Types: LT:pl. 636 in Icon. Pl. Rar. [Jacquin] 3, 1792
Distribution: Bahamas (Eleuthera), Cuba (Guantánamo, Oriente, Santiago de Cuba)
IUCN Red List Status: Vulnerable; A2c

Zamia boliviana (Brongn.) A.DC., Prodr. [A. P. de Candolle] 16(2): 540. (1868).
Types: BAS: Ceratozamia boliviana
Distribution: Bolivia (El Beni, Cochabamba, Santa Cruz), Brazil (Mato Grosso)
IUCN Red List Status: Least Concern

Zamia brasiliensis Calonje & Segalla, Phytotaxa 404 (1): 1-11. (2019).
Types: H:UFMT
Distribution: Brazil (Mato Grosso, Rondônia)
IUCN Red List Status: Not Evaluated

Zamia chigua Seem., Bot. Voy. Herald 6: 201-203, t. 43. (1854).
Types: LT:t. 43
Distribution: Colombia (Chocó, Valle del Cauca)
IUCN Red List Status: Not Evaluated

Zamia cremnophila Vovides, Schutzman & Dehgan, Bot. Gaz. 149(3): 351. (1988).
Types: H:MEXU
Distribution: Mexico (Chiapas, Tabasco)
IUCN Red List Status: Endangered; B1ab(v)

Zamia cunaria Dressler & D.W.Stev., Brittonia 45(1): 5-6, fig. 2. (1993).
Types: H:NY
Distribution: Panama (Colón, Panamá, Kuna de Wargandi, Kuna Yala)
IUCN Red List Status: Endangered; B1ab(iii,v)

Zamia decumbens Calonje, Meerman, M.P.Griff. & Hoese, J. Bot. Res. Inst. Texas 3(1): 31-41, figs. 1-3. (2009).
Types: H:BRH
Distribution: Belize (Cayo, Stann Creek, Toledo)
IUCN Red List Status: Not Evaluated

Zamia disodon D.W.Stev. & Sabato, Fl. Colombia (1983+) 21: 38-40, fig. 4. (2001).
Types: H:COL
Distribution: Colombia (Antioquia)
IUCN Red List Status: Endangered; B1ab(iii,v)+2ab(iii,v); C2a(i)

Zamia dressleri D.W.Stev., Brittonia 45(1): 6, fig. 3. (1993).
Types: H:NY
Distribution: Panama (Colón, Kuna Yala)
IUCN Red List Status: Endangered; B1ab(iii,v)

Zamia elegantissima Schutzman, Vovides & R.S.Adams, Phytologia 85(6): 389 (1998 publ. 21 Aug. 2003). (2003).
Types: H:MO
Distribution: Panama (Colón, Kuna Yala)
IUCN Red List Status: Endangered; B1ab(iii,v)

Zamia encephalartoides D.W.Stev., Fl. Colombia (1983+) 21: 40-42, fig. 5. (2001).
Types: H:COL
Distribution: Colombia (Santander)
IUCN Red List Status: Endangered; B1ab(iii,v)+2ab(iii,v)

Zamia erosa O.F.Cook & G.N.Collins, Contr. U.S. Natl. Herb. 8(2): 267. (1903).
Types: NT:NA
Distribution: Cuba, Jamaica, Puerto Rico
IUCN Red List Status: Vulnerable; C1

Zamia fairchildiana L.D.Gómez, Phytologia 50(6): 401-404. (1982).
Types: LT:USJ
Distribution: Costa Rica (Puntarenas, San José), Panama (Chiriquí)
IUCN Red List Status: Near Threatened; C1

Zamia fischeri Miq., Hort. Vanhoutt. 1(1): 20. (1845).
Types: NT:U
Distribution: Mexico (Hidalgo, Querétaro, San Luis Potosí, Tamaulipas)
IUCN Red List Status: Endangered; A4cd

Zamia furfuracea L.f., Hort. Kew. (W. Aiton) 3: 477. (1789).
Types: LT:pl. 210 in Herm. Parad. Bat., 1698
Distribution: Mexico (Veracruz)
IUCN Red List Status: Not Evaluated

Zamia gentryi Dodson, Novon 8(1): 12-14, fig. 1a-f. (1998).
Types: H:QCNE
Distribution: Ecuador (Carchi, Esmeraldas)
IUCN Red List Status: Endangered; B1ab(iii)+2ab(iii)

Zamia gomeziana R.H.Acuña, Brenesia 73-74: 29-33, fig. 1. (2010).
Types: H:CR
Distribution: Costa Rica (Limón)
IUCN Red List Status: Not Evaluated

Zamia grijalvensis Pérez-Farr., Vovides & Mart.-Camilo, Nordic J. Bot. 30(5): 565-570. (2012).
Types: H:HEM
Distribution: Mexico (Chiapas)
IUCN Red List Status: Not Evaluated

Zamia hamannii A.S.Taylor, J.L.Haynes & Holzman, Bot. J. Linn. Soc. 158(3): 399-429, figs. 6, 7a, 8a. (2008).
Types: H:PMA
Distribution: Panama (Bocas del Toro)
IUCN Red List Status: Not Evaluated

Zamia herrerae S.Calderón & Standl., J. Wash. Acad. Sci. 14(4): 93-94, fig. 1. (1924).
Types: H:US
Distribution: El Salvador (Sonsonate), Guatemala (Quetzaltenango Retalhuleu, Santa Rosa, Suchitepéquez), Mexico (Chiapas)
IUCN Red List Status: Vulnerable; B1ab(iii,v)

Zamia huilensis Calonje, H.E.Esquivel & D.W.Stev., Caldasia 34(2): 283-290. (2012).
Types: H:TOLI
Distribution: Colombia (Huila)
IUCN Red List Status: Not Evaluated

Zamia hymenophyllidia D.W.Stev., Fl. Colombia (1983+) 21: 43-44, fig. 6. (2001).
Types: H:COAH
Distribution: Colombia (Amazonas), Peru (Loreto)
IUCN Red List Status: Least Concern

Zamia imbricata Calonje & J.Castro, Phytotaxa 497(1): 5-9, figs. 3-5. (2021).
Types: HT:HUA
Distribution:
IUCN Red List Status: Not Evaluated

Zamia imperialis A.S.Taylor, J.L.Haynes & Holzman, Bot. J. Linn. Soc. 158(3): 399-429, figs. 7c, 8c, 11. (2008).
Types: H:PMA
Distribution: Panama (Coclé, Colón, Panamá, Veraguas)
IUCN Red List Status: Not Evaluated

Zamia incognita A.Lindstr. & Idárraga, Phytotaxa 2: 29-34, figs. 1-3. (2009).
Types: H:HUA
Distribution: Colombia (Antioquia, Boyacá, Caldas, Santander)
IUCN Red List Status: Not Evaluated

Zamia inermis Vovides, J.D.Rees & Vázq.Torres, Fl. Veracruz 26: 22-24, fig. 3. (1983).
Types: H:XAL
Distribution: Mexico (Veracruz)
IUCN Red List Status: Critically Endangered; A2acd+4acd; B1ab(i,ii,iii,v)

Zamia integrifolia L.f., Hort. Kew. (W. Aiton) 3: 478. (1789).
Types: H:BM
Distribution: Bahamas, Cayman Islands, Cuba, United States (Florida, Georgia)
IUCN Red List Status: Near Threatened; A2ad

Zamia integrifolia var. integrifolia , Phytologia 98(3): 174. (2016).
Types: AUT
Distribution: United States (Florida)
IUCN Red List Status: Not Evaluated

Zamia integrifolia var. umbrosa (Small) D.B.Ward, Phytologia 98(3): 174. (2016).
Types: BAS: Z. umbrosa
Distribution: United States (Florida)
IUCN Red List Status: Not Evaluated

Zamia ipetiensis D.W.Stev., Brittonia 45(1): 7-9, fig. 4. (1993).
Types: H:NY
Distribution: Panama (Panamá, Kuna Yala)
IUCN Red List Status: Endangered; B1ab(i,ii,iii,v)

Zamia katzeriana (Regel) E.Rettig, Gartenflora 45: 148-149, fig. 31. (1896).
Types: BAS: Ceratozamia katzeriana
Distribution: Mexico (Chiapas)
IUCN Red List Status: Not Evaluated

Zamia lacandona Schutzman & Vovides, Novon 8(4): 441-446, figs. 1-3. (1998).
Types: H:FLAS
Distribution: Mexico (Chiapas)
IUCN Red List Status: Endangered; A2cd

Zamia lecointei Ducke, Arch. Jard. Bot. Rio de Janeiro 1: 9-10, pls 1-2. (1915).
Types: H:MG
Distribution: Brazil (Pará), Colombia (Amazonas), Venezuela (Amazonas)
IUCN Red List Status: Least Concern

Zamia lindenii Regel ex André, Ill. Hort. 22: 23, pl. 195. (1875).
Types: LT:K
Distribution: Ecuador (Azuay, Bolivar, Chimborazo, El Oro, Esmeraldas, Guayas, Los Ríos, Manabi, Pichincha), Perú (Tumbes)
IUCN Red List Status: Not Evaluated

Zamia lindleyi Warsz., Allg. Gartenzeitung 19: 145-146, fig. s.n.. (1851).
Types: LT:icone s.n.
Distribution: Panama (Bocas del Toro, Chiriquí)
IUCN Red List Status: Not Evaluated

Zamia lindosensis D.W.Stev., D.Cárdenas & N.Castaño, Brittonia 70(3): 364 [epublished 19 Jun 2018]. (2018).
Types: H:COAH
Distribution: Colombia (Guaviare)
IUCN Red List Status: Not Evaluated

Zamia loddigesii Miq., Tijdschr. Natuurl. Gesch. Physiol. 10: 72-73. (1843).
Types: LT:U
Distribution: Mexico (Chiapas, Hidalgo, Oaxaca, Tabasco, Tamaulipas, Veracruz)
IUCN Red List Status: Near Threatened; A4ac

Zamia lucayana Britton, Bull. New York Bot. Gard. 5(18): 311. (1907).
Types: H:NY
Distribution: Bahamas (Abaco, Long Island)
IUCN Red List Status: Critically Endangered; B1ab(i,ii,iii)+2ab(i,ii,iii)

Zamia macrochiera D.W.Stev., Cycad Classific. Concepts & Recommend.: 185-186, fig. 14.7. (2004).
Types: H:NY
Distribution: Colombia (Amazonas), Peru (Loreto)
IUCN Red List Status: Endangered; B1ab(iii)+2ab(iii)

Zamia magnifica Pérez-Farr., Gut.Ortega & Calonje, Taxonomy 3(2): 232-249 (237, figs. 4-10). (2023).
Types: HT:HEM
Distribution: Mexico (Oaxaca)
IUCN Red List Status: Not Evaluated

Zamia manicata Linden ex Regel, Trudy Imp. S.-Peterburgsk. Bot. Sada 4(4): 310, t. 926, fig. e. (1876).
Types: LT:t. 926, fig. e in Gartenflora 27, 1878
Distribution: Colombia (Antioquia, Chocó), Panama (Darién)
IUCN Red List Status: Near Threatened; B1b(iii)+2b(iii)

Zamia meermanii Calonje, J. Bot. Res. Inst. Texas 3(1): 23-29, figs. 1-2. (2009).
Types: H:BRH
Distribution: Belize (Belize, Cayo, Toledo)
IUCN Red List Status: Not Evaluated

Zamia melanorrhachis D.W.Stev., Fl. Colombia (1983+)21: 55, fig. 11. (2001).
Types: H:COL
Distribution: Colombia (Antioquia, Bolivar, Córdoba, Santander)
IUCN Red List Status: Endangered; B2ab(iii,v)

Zamia montana A.Braun, Monatsber. Königl. Preuss. Akad. Wiss. Berlin: 376-377. (1875).
Types: N:NY
Distribution: Colombia (Antioquia, Risaralda)
IUCN Red List Status: Critically Endangered; B1ab(iii,v)

Zamia monticola Chamb., Bot. Gaz. 81(2): 219, 223, figs. 1-3. (1926).
Types: H:MO
Distribution: Guatemala (Alta Verapaz)
IUCN Red List Status: Critically Endangered; A2cd+4cd

Zamia multidentata Calonje, Segalla & R.S.Pimenta, Phytotaxa 598(1): 21-31(22; figs. 1-3). (2023).
Types: HT:RB;IT:INPA,UFACPZ,UFMT
Distribution: Brazil (Acre)
IUCN Red List Status: Not Evaluated

Zamia muricata Willd., Sp. Pl., ed. 4 [Willdenow] 4: 847-848. (1806).
Types: H:B-W
Distribution: Colombia (La Guajira), Venezuela (Aragua, Carabobo, Falcón, Lara, Yaracuy)
IUCN Red List Status: Not Evaluated

Zamia nana A.Lindstr., Calonje, D.W.Stev. & A.S.Taylor, Phytotaxa 98(2): 27–42, figs. 6-7. (2013).
Types: H:PMA
Distribution: Panama (Coclé)
IUCN Red List Status: Not Evaluated