Cyperus rheophyticus Lye, Nordic J. Bot. 24 (3): 273 (2006)

Kuetegue, Felix, Sonke, Bonaventure & Ameka, Gabriel K., 2019, A checklist of rheophytes of Cameroon, PhytoKeys 121, pp. 81-131 : 81

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).

Figures

Figures 2 - 10. 2 Bolbitis fluviatilis (Hook.) Ching 3 Bolbitis heudelotii (Bory ex Fee) Alston 4 Lepidagathis alopecuroides R. Br. ex Griseb. 5 Achyranthes talbotii Hutch & Daziel 6 Crinum natans Baker 7 Kanahia laniflora (Forssk.) R. Br. 8 Anubias barteri Schott 9 Cyperus rheophyticus Lye 10 Cyperus tonkinensis C. B. Clarke var. baikiei (C. B. Clarke ex Kuk) S. S. Hooper.