Ledermanniella bifurcata (Engl.) C.Cusset, Adansonia ser . 2, 14(2): 273 (1974)

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

17. Ledermanniella bifurcata (Engl.) C.Cusset, Adansonia ser. 2, 14(2): 273 (1974)

Inversodicraea bifurcata Engl., Veg. Erde 9(3, 1): 273 (1915)

Type.

Cameroon, Kribi, Mildbraed 5951 (holotype: B).

Specimens examined.

Bipindi, Annet 321 (P); 10 km from Kribi-Lolodorf, Kienke rapids, J.J. Bos 7071, 7072 (WAG); 33 km northeast of Eta, 60 km southeast of Ngoila, Nki waterfalls, R. Letouzey 11949 (P); 50 km east of Grand Batanga, Kribi waterfalls, Mildbraed 5951, 5952, 5952a (YA).

Habitat.

River rapids and waterfalls in evergreen forests.

Distribution.

Cameroon (Fig. 25 ), Gabon, Congo, Equatorial Guinea.

Conservation status in Cameroon.

Ledermanniella bifurcata has been assessed globally as Vulnerable ( Ghogue 2010e). The taxon is known from 6 localities. The extent of occurrence of L. bifurcata is about 11,166 km2 and the area of occupancy is about 24 km2. The main threats currently known from the localities are forest logging and agriculture. Based on these threats, the number of localities currently known, and the continuous decline of vegetation cover in the area, extent and /or quality of habitat, L. bifurcata is currently reassessed as Vulnerable. IUCN Red List Category: Vulnerable VUB1+2ab (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.