Deinbollia angustifolia D.W.Thomas, Ann. Missouri Bot. Gard. 73(1): 219 (1986)

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

Deinbollia angustifolia D.W.Thomas, Ann. Missouri Bot. Gard. 73(1): 219 (1986)

Type.

Cameroon - SouthWest Region, near Mundemba, 4°56'N, 8°52'E, rocky bank of Idu River at Bulu on path to Ekumbako, 10 m, 07 Mar 1984, D. W. Thomas 3253 (holotype: MO; isotypes: K, P, YA).

Description.

Stenophyllous shrub of about 1 m high; roots spreading and deep; stems strong but flexible; leaves narrow 20-25 × 1-1.5 cm, grouped at the summit of the stem.

Specimens examined.

Korup Reserve, 4°55'N, 8°50'E, 16 Jul 1983, D. W. Thomas 2243 (YA); between Bulu and Dibunda, 4°55'N, 8°52'E, 07 Mar 1984, D. W. Thomas 3253 (YA); between Bulu and Ekumbako, 4°56'N, 8°52'E, 00 Jun 1984, D. W. Thomas 3497 (YA).

Habitat.

Rocky bed of rivers, on banks of streams and rivers.

Distribution.

Cameroon (Fig. 23 ).

Conservation status in Cameroon.

Deinbollia angustifolia is listed on http://www.iucnredlist.org as Vulnerable by Cheek (2017a). It was earlier assessed in Onana and Cheek (2011) as Vulnerable. The taxon is endemic to Cameroon and currently known from three localities. The extent of occurrence of this species is estimated less than 100 km2, and the area of occupancy is about 12 km2. The habitat of D. angustifolia is threatened by illegal timber logging. Based on this threat, and the continuous decline of vegetation cover in the area, extent and /or quality of habitat, the assessment of Cheek (2017a) is maintained as Vulnerable. IUCN Red List Category: Vulnerable VU B2a b (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.