Dioscorea collettii 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 : 312

Dioscorea collettii Hook.f., Fl. Brit. India 6: 290. 1892. Lectotype (designated here): BURMA, Upper Burma, Shan Hills , Naungtaya , 4000 ft, fl., May 1888, H. Collett 775 (K [K000098153 digital image!]; isolecto CAL [CAL0000024783!]). Fig. 1

Notes: Collett and Hemsley (1890) recognized a new species of Dioscorea based on materials collected by Collett from Shan Hills, Burma (now Myanmar), and provided a brief description without naming. Hooker (1892) described it as D. colletii , and commented “the only Asiatic species with forked filaments and separated anther-cells”. Two collections of Collett 775 (CAL0000024783!, K000098153 digital image!) annotated by J.D. Hooker were traced at CAL and K. Apart, one more specimen (Collett 781) was found at K (K001142113) from the same locality and all three specimens can be regarded as syntypes (Art. 9.4 of Shenzhen Code, Turland et al., 2018). Thapyai et al. (2005) treated the specimen (Collett 775) at K as holotype, however, since the collection number and housing of specimen mentioned neither by Collett nor by Hooker, this cannot be considered as holotype. Therefore, the specimen (K000098153, http://specimens.kew.org/herbarium/K000098153) in best agreement with the protologue and having an annotation of Collett and Hemsley (1890) as “ Dioscorea sp. Indescript., Collett & Hemsley in Journ. Linn. Soc. v 28. 137 (1890)” is designated here as the lectotype.