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 Cyperus rheophyticus Lye, Nordic J. Bot. 24 (3): 273 (2006) Type. Cameroon, South West Division, Kupe-Muanenguba Division, Muambong, bank of Chide River, 3°58'N , 9°41'E , 02 Aug 1998, J.-M. Onana 585 , (holotype: K; isotype: YA). Description. Perennial herb, 30-50 cm high; deeply rooted; inflorescence terminal, with involucre bracts. Specimens examined. Kodmin, beside a stream, 4°59'N , 9°42'E , 21 Nov 1998, M. Etuge 406 (YA). Habitat. Forest streams and rivers, submerged during wet season. Distribution. Cameroon (Fig. 9 ). Conservation status in Cameroon. Cyperus rheophyticus is listed on http://www.iucnredlist.org as Vulnerable in 2017 ( Cheek et al. 2017b ). The taxon is currently known from five localities, and endemic to Cameroon. The extent of occurrence of this species is about 3,000 km2 and area of occupancy is about 20 km2. The localities where they occur are proposed for plantation development, timber exploitation and road construction. Not much has changed since the last assessment of Cheek et al. (2017b) ; here we maintain its status as Vulnerable. IUCN Red List Category: Vulnerable B1ab (iii) +2ab (iii).