Ledermanniella thalloidea (Engl.) C.Cusset, Adansonia ser 2, 14(2): 275 (1974), C. Cusset, Adansonia ser 2, 14 (2): 275, 1974

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

publication ID

http://dx.doi.org/10.3897/phytokeys.121.29924

persistent identifier

http://treatment.plazi.org/id/80F94F52-838F-BC49-C9C8-FD6AF1EB8FD2

treatment provided by

PhytoKeys by Pensoft

scientific name

Ledermanniella thalloidea (Engl.) C.Cusset, Adansonia ser 2, 14(2): 275 (1974)
status

 

29. Ledermanniella thalloidea (Engl.) C.Cusset, Adansonia ser 2, 14(2): 275 (1974)  

Inversodicraeia thalloidea   Engl., Veg. Erde 9(3, 1): 274 (1915)

Type.

Cameroon, Ndoungue near Nkongsamba, Ledermann 6328a (lectotype: B; isotypes: BM, U). Basionym: Inversodicraeia thalloidea   Engl., Veg. Erde 9(3, 1): 274 (1915).

Specimens examined.

Tributary of Sanaga, 10 km north of Edea, Kers 1904 (LISC); Ndoungue near Nkongsamba, 800 m alt., Ledermann 6328a (BM, U); Natchigal, Sanaga waterfall, A. & J. Raynal 10542 (P).

Habitat. River rapids and waterfalls in tropical rain forest.

Distribution.

Cameroon (Fig. 25 View Figures 20–25 ).

Conservation status in Cameroon.

Ledermanniella thalloidea   is listed on http://www.iucnredlist.org as Endangered ( Ghogue 2010k). However, Onana and Cheek (2011) assessed the taxon as Vulnerable. The taxon is endemic to Cameroon and known from two localities. The species’ area of occupancy is estimated to be less than 10 km2, and the extent of occurrence estimated at 18 km2. There is a decline in the quality of the habitat of the species; there is a dam at the Sanaga waterfalls, and another dam construction is in progress at the Nachtigal waterfalls, the two sites for the species. Due to the impact of the dams on the habitat of the species it is here reassessed as Critically Endangered. IUCN Red List Category: Critically Endangered CRB2ab (iii).