Dioscorea tamoidea Grisebach (1842: 42)

Raz, Lauren, 2016, Untangling the West Indian Dioscoreaceae: New combinations, lectotypification and synonymy, Phytotaxa 258 (1), pp. 26-48 : 42

5. Dioscorea tamoidea Grisebach (1842: 42) . Type:— CUBA. Sancti Spiritus: ufer San Juan, 24 July 1839, Otto 349 ♂ [holotype B!, isotypes S! (2 sheets)]

Notes: Cuba and Hispaniola. The protologue (as “ D. tamoideam ” with a final “m”) consists of a three word description of the leaves, followed by the type citation. It appears in Flora Brasiliensis as a species affine to Grisebach’s D. hederifolia , from eastern Brazil, however it does not appear in Grisebach’s Cuban catalogue (1866), as the latter refers only to material collected by Wright. An orthographic variant, D. thamnoidea hort. ex Correns was cited by Knuth (1924; the source cited by him is “ Sitzungsber. Akad. Wien 97 (1): 672-3, 1889,” but I have not been able to track down a copy, digital or hardcopy). Knuth (1924) also cited among the exsiccatae of D. tamoidea, Ekman 1105 and “Wright 3252 p.p.” The former is actually a specimen of Dioscorea psilostachya , and in the case of the latter, it remains unclear which duplicate(s) Knuth was referring to (see D. cubensis ). A single subspecies of D. tamoidea is recognized below. Described as a variety, it is here elevated to the rank of subspecies as it is geographically restricted to Eastern Cuba and Western Hispañola.