Macropodiella heteromorpha (Baill.) C.Cusset, Adansonia, ser . 2, 17(3): 298 (1978)

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

34. Macropodiella heteromorpha (Baill.) C.Cusset, Adansonia, ser. 2, 17(3): 298 (1978)

Sphaerothylax heteromorpha Baill., Bull. Mens. Soc. Linn. Paris ii 876 (1890)

Macropodiella mildbraedii Engl., Bot. Jahrb. Syst. 60(5): 466 (1926)

Type.

Gabon, Thollon 729 (holotype: P). Basionym: Sphaerothylax heteromorpha Baill., Bull. Mens. Soc. Linn. Paris ii 876 (1890).

Specimens examined.

Makak Forest Reserve, P. Bamps 1453 (YA); Nyong River, near Mbalmayo, Mildbraed 7749, 7750 (B, U).

Habitat.

River rapids and waterfalls in tropical rainforests.

Distribution.

Cameroon (Fig. 25 ), Côte d’Ivoire and Gabon.

Conservation status in Cameroon.

Macropodiella heteromorpha is listed on http://www.iucnredlist.org as Vulnerable ( Ghogue 2010n). The taxon is known from four localities, and the area of occupancy is less than 500 km2 and the extent of occurrence estimated at 75 km2. At one of the localities ( Meve’ele waterfalls) it is proposed to build a hydropower dam. The species is threatened by habitat decline due to future dam construction. According to Ghogue (2010n) two other localities, Nyong River near Mbalmayo and the Mpoume waterfalls on the Nyong River near Makak, have been listed by Cusset (1987) for this species. These two sites have been surveyed by Ghogue but the species has not been seen or collected. M. heteromorpha is, therefore, here reassessed as Critically Endangered. IUCN Red List Category: Critically Endangered CRB2ab (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.