A checklist of rheophytes of Cameroon Author Kuetegue, Felix Author Sonke, Bonaventure Author Ameka, Gabriel K. text PhytoKeys 2019 121 81 131 http://dx.doi.org/10.3897/phytokeys.121.29924 journal article http://dx.doi.org/10.3897/phytokeys.121.29924 1314-2003-121-81 B21D393FFFFBFC4EFF96FFA7FFF98263 3484962 43. Zehnderia microgyna C.Cusset, Fl. Cameroon 30: 56 (1987) Type. Cameroon, Edea, 29 Jan 1951, Zehnder 264 (holotype: ZT). Specimen examined. Edea, Sanaga waterfall, 29 Jan 1951, Zehnder 264, 276, 278 (ZT). Distribution. Cameroon (Fig. 25 ). Conservation status in Cameroon. Zehnderia microgyna is listed on http://www.iucnredlist.org. as Critically Endangered ( Ghogue 2010s ). The taxon is known from only one locality. The extent of occurrence of Z. microgyna and the area of occupancy are estimated at about 4 km2 each. There is a dam built on the Sanaga River, the habitat of the species. Based on that threat, and the fact that the species is known only from one locality and the continuous decline of vegetation cover in the area, and extent and/or quality of habitat, Z. microgyna is here assessed as Critically Endangered. IUCN Red List Category: Critically Endangered CRB1+2ab (ii, iii).