Dioscorea obcuneata Hook.f., Fl. Brit.

R. S., Pagare, K. C., Kishor & Arisdason, W., 2020, Typification of seven names in Dioscorea (Dioscoreaceae) described by J. D. Hooker, Rheedea 30 (2), pp. 312-316 : 314-315

Dioscorea obcuneata Hook.f., Fl. Brit. India 6: 293. 1892. Lectotype (designated here): CEYLON, s.l., fl., s.d., Macrae 111 (K [K000098236 digital image!]; isolecto BM [BM000958191 digital image!]). Fig. 5

Notes: Hooker (1892) described D. obcuneata based on collection made from Ceylon (now Sri Lanka), but did not provide any details on specimen. However, Hooker (1892) had mentioned in the protologue that “he had seen one specimen in Hookerian Herbarium collected from Ceylon and annotated by Sir W. Hooker but with no other locality or collector’s name”. But, this specimen is not traceable in any of the herbaria. However, other two specimens were traced, one each at K (K000098236) and BM (BM000958191) for the name D. obcuneata . The specimen housed at K (K00008236) was annotated by Hooker and according to the article 9.6, the above specimens can be considered as syntypes. Among them, though both have distinct inflorescences, Macrae 111 housed at K (K000098236, http://specimens. kew.org/herbarium/K000098236) is the most complete specimen that shows phyllotaxy clearly is designated here as the lectotype.