Cheiridopsis alba-oculata (Aizoaceae: Ruschioideae, Ruschieae) - A new quartz-endemic from southern Namaqualand, South Africa

摘要

Cheiridopsis alba-oculata Klak & N.A. Helme is a new species known from two populations in the Garies region of southern Namaqualand, where it appears to be restricted to patches of quartz-gravel. The species belongs to the Cheiridopsis-Odontophorus alliance because of its papillate leaves and the 9- or 10-locular fruits with large closing bodies. The isophylly and globose fruits with raised tops suggest that it is closely related to C. subg. Odontophoroides and Odontophorus. C alba-oculata is geographically isolated in this group, whose other members are restricted to northern Namaqualand. C. alba-oculata resembles Cheiridopsis ponderosa and Cheiridopsis pilosula in its densely papillate leaves but is distinguished from them by its strongly keeled, apically toothed leaves. (C) 2014 SAAB. Published by Elsevier B.V. All rights reserved.