Ledermanniella batangensis (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

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

Dicraeia batangensis Engl., Bot. Jahrb. Syst. 43(4): 380 (1909)

Inversodicraeia batangensis Engl., Veg. Erde 9(3, 1): 271 (1915)

Type.

Cameroon, Grand Batanga, Ledermann 221 (holotype: B). Basionym: Dicraeia batangensis Engl., Bot. Jahrb. Syst. 43(4): 380 (1909).

Specimen examined.

Grand Batanga, Lobe waterfalls, Ledermann 221 (holotype: B, isotype: U).

Habitat.

On rocks in waterfalls.

Distribution.

Cameroon (Fig. 25 ).

Conservation status in Cameroon.

Ledermanniella batangensis is listed on http://www.iucnredlist.org globally as Critically Endangered ( Ghogue 2010d). Onana and Cheek (2011) also assessed this species as Critically Endangered. The taxon is known from only Lobe waterfalls. The area of occupancy and extent of occurrence are both estimated at 4 km2. The locality has a booming tourist industry and this has led to a general decline in quality of the habitat of the species. L. batangensis is here reassessed and the earlier assessment is maintained as Critically Endangered. IUCN Red List Category: Critically Endangered B1ab (ii, iii) +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.