Cycad Names | Cycadales > Zamiaceae > Dioon > Dioon holmgrenii De Luca, Sabato & Vázq.Torres

Dioon holmgrenii De Luca, Sabato & Vázq.Torres [WFO] [IPNI] [POWO] [MO]

First published in: Brittonia 33(4): 552-554, figs. 1-2. (1981).

Etymology: Honoring Dr. Noel Herman Holmgren, taxonomist and curator at the New York Botanical Garden. [source]

Nomenclatural Type Information
Collector and Number: M. Vázquez-Torres 2304
Locality: Mexico, Oaxaca, slope with Quercus, 15 km S of San Gabriel along road from Puerto Escondido to Oaxaca, Distrito de Juquila , 650-850 m , 21 Mar 1980
Type Location(s): HT:XALU; IT:ENCB, FI, MEXU, NAP, NY

Distribution: Mexico (Oaxaca)

IUCN Red List Conservation Status: Vulnerable B1ab(iii)+2ab(iii)

Location Privacy Notice: This map is provided to show a rough estimate of the distribution of this species based on georeferenced localities on the WLoC database. The points may not be comprehensive of the species distribution and may contain errors. To protect the precise locations of populations of this highly threatened plant group, coordinates displayed on this map have been denatured to 0.1 degree precision (approximately 11 km accuracy). Map zoom levels are also limited for conservation purposes.

Geographic Distribution

Legend:
Collection Events (4)
Image Gallery (4 observation records)

Mexico (Oaxaca)

Mexico (Oaxaca)

Mexico (Oaxaca)

Mexico (Oaxaca)

References (5)

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Chemnick J, Gregory T, Morales S. 2022. Dioon holmgrenii. The IUCN Red List of Threatened Species 2022: e.T42129A69831707. WLoC DOI
Red List Assessment
Haynes JL. 2022. Etymological compendium of cycad names. Phytotaxa 550 (1) : 1-31. WLoC DOI
Etymology
Gregory TJ. 2003. Dioon holmgrenii, then and now. Cycad Newslett. 26 (3) : 5-7. WLoC
Stevenson DW, Sabato S. 1986. Typification of names in Ceratozamia brongn, Dion lindl, and Microcycas A. DC. (Zamiaceae). Taxon 35 (3) : 578-584. WLoC DOI
De Luca P, Sabato S, Vázquez-Torres M. 1981. Dioon holmgrenii (Zamiaceae), a new species from Mexico. Brittonia 33 (4) : 552-555. WLoC JSTOR
Protologue Pages: 552-555
Notes: Protologue description