Dioscorea collettii Hook.f., Fl. Brit.

Dioscorea collettii Hook.f., Fl. Brit. View in CoL 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.