Dicraeanthus zehnderi H.E.Hess, Ber. Geobot. Inst. Eidg. Techn. Hochsch. Stiftung Rŭbel Heft 32: 188 (1961), H. E. Hess, Ber. Geobot. Inst. Eidg. Techn. Hochsch. Stiftung Rŭbel Heft 32: 188, 1961

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/83251D42-2F58-14F6-6D40-1621823752A0

treatment provided by

PhytoKeys by Pensoft

scientific name

Dicraeanthus zehnderi H.E.Hess, Ber. Geobot. Inst. Eidg. Techn. Hochsch. Stiftung Rŭbel Heft 32: 188 (1961)
status

 

2. Dicraeanthus zehnderi H.E.Hess, Ber. Geobot. Inst. Eidg. Techn. Hochsch. Stiftung Rŭbel Heft 32: 188 (1961)  

Type.

Cameroon, Edea, 30 Jan 1951, Zehnder 259 (syntype: Z, ZT).

Specimens examined.

Edea at Sanaga waterfall, Zehnder 259, 260, 262 (ZT); Sanaga waterfalls, 30 Jan 1951, Hess 51 / 270 (ZT).

Habitat.

Growing in river rapids and waterfalls of Sanaga.

Distribution.

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

Conservation status in Cameroon.

Dicraeanthus zehnderi   was listed on http://www.iucnredlist.org as Critically Endangered ( Ghogue 2010c). It was also assessed by Onana and Cheek (2011) as Critically Endangered since it has not been collected for many decades. The only known collecting locality for D. zehnderi   is the waterfall on Sanaga River at Edea. The extent of occurrence and the area of occupancy are both estimated at 4 km2. The hydropower dam on the waterfall will adversely affect the survival of this species and other Podostemaceae   species present at this locality. The taxon is here reassessed as Critically Endangered. IUCN Red List Category: Critically Endangered CRB1+2ab (iii).