Inversodicraea bosii (C.Cusset) Rutish. & Thiv, Plant Syst. Evol. 283: 57 (2009)

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

6. Inversodicraea bosii (C.Cusset) Rutish. & Thiv, Plant Syst. Evol. 283: 57 (2009)

Ledermanniella bosii C.Cusset, Bull. Mus. Natl. Hist. Nat., B, Adansonia 4: 385 (1984)

Type.

Cameroon, South of Kribi, 08 Jan 1969, J.J. Bos 3592 (YA). Basionym: Ledermanniella bosii C.Cusset, Bull. Mus. Natl. Hist. Nat., B, Adansonia 4: 385 (1984).

Specimens examined.

South of Kribi on Lobe waterfall, 08 Jan 1969, J.J. Boss 3592 (K, WAG, P); near Bongola, Ntem waterfall, Dec, R. Letouzey 15333 (P); South Region, south Kribi, Lobe waterfall, 08 Jan 1969, J.J. Boss 3597 (WAG).

Habitat.

Lobe waterfall, south of Kribi.

Distribution.

Cameroon (Fig. 25 ).

Conservation status in Cameroon.

Inversodicraea bosii is listed on http://www.iucnredlist.org. The taxon was assessed as Endangered ( Ghogue 2017a). Onana and Cheek (2011) assessed this species earlier as Endangered. The species is known from two localities, Campo waterfalls and Lobe waterfalls at Kribi. The extent of occurrence and area of occupancy are both estimated at 4 km2 each. Based on the continuing decline in quality of the habitat of the species at Lobe waterfalls due to activities of tourists; and the possible adverse effect of the proposed hydropower dam near Campo waterfalls the assessment of Onana and Cheek (2011) and Ghogue (2017a) cannot be maintained. The species is here reassessed as Critically Endangered. IUCN Red List Category: Critically Endangered CRBI+ B2ab (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.