Inversodicraea ntemensis (Y.Kita, Koi, Rutish. & M.Kato) J.J.Schenk, R.Herschlag & D.W.Thomas, Syst. Bot. 40(2): 542. (2015)

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

12. Inversodicraea ntemensis (Y.Kita, Koi, Rutish. & M.Kato) J.J.Schenk, R.Herschlag & D.W.Thomas, Syst. Bot. 40(2): 542. (2015)

Ledermanniella ntemensis Y.Kita, Koi, Rutish. & M.Kato; Acta Phytotax. Geobot. 59: 224 (2008)

Type.

Cameroon, R. Imaichi Kita, Y. & J. P. Ghogue CMR 65 (YA). Basionym: Ledermanniella ntemensis Y.Kita, Koi, Rutish. & M.Kato; Acta Phytotax. Geobot. 59: 224 (2008).

Specimens examined.

South Region, Canon of Ntem, 30 km southwest of Nyabessan, 01 Dec 1982, Nkongmeneck 420 (YA); Ntem waterfalls, near Bongola, 40 km southeast of Campo, 10 Dec 1979, R. Letouzey 15333 (P, YA); Campo a’an area, Memve’ele waterfalls, 2°24'N, 10°21'E, 17 Jan 2002, P. Tchouto 3373 (K, KRI, SCA, WAG, YA).

Habitat.

Rapids of Ntem River.

Distribution.

Cameroon (Fig. 25 ).

Conservation status in Cameroon.

Inversodicraea ntemensis is not listed on http://www.iucnredlist.org. It was assessed in Onana and Cheek (2011) as Critically Endangered. The taxon is endemic to Cameroon and to the Ntem River. The extent of occurrence is about 4 km2, and the area of occupancy is about 4 km2. The main threat to the survival of the species is dam construction on Ntem River. The species is here reassessed and maintained as Critically Endangered. IUCN Red List Category: Critically Endangered CRB1+2ab (ii, iii).

Figures

Figures 20 - 25. 20 Ixora inundata Hiern 21 Virectaria angustifolia (Hiern) Bremek 22 Virectaria salicoides (C. H. Wright) Bremek 23 Deinbollia angustifolia D. W. Thomas 24 Deinbollia saligna Keay 25 Podostemaceae distribution.