Synonym
Macrozamia tridentata subsp. cylindrica J.Schust.
Published in: in Engler, Pflanzenr. 99: 91. 1932. 
(Pflanzenr. (Engler) 
)
This name is considered a Synonym of Macrozamia macleayi Miq.
Nomenclatural notes: Intended by Schuster to be a new combination, but basionym cited is a later homonym of M. cylindrica W.Bull, so it is considered a new name