Bolusiella Schlechter (1918: 105)

Verlynde, Simon, Dubuisson, Jean-Yves, Stévart, Tariq, Droissart, Murielle Simo-, Geerinck, Daniel, Sonké, Bonaventure, Cawoy, Valérie, Descourvières, Pascal & Droissart, Vincent, 2013, Taxonomic revision of the genus Bolusiella (Orchidaceae, Angraecinae) with a new species from Cameroon, Burundi and Rwanda, Phytotaxa 114 (1), pp. 1-22 : 3

Bolusiella Schlechter (1918: 105) .

Type:— Bolusiella maudiae (Bolus) Schltr.

Monopodial plants, epiphytic or sometimes lithophytic. Habit psygmoid, leaves arranged in a plane, dorsoventrally flattened and unifacial. Flowers white, resupinate, 2–6 mm long with free tepals, disposed on a lateral inflorescence, more or less grouped, in a simple raceme. Lip triangular and sometimes slightly trilobate; spur conical or cylindrical; present in most species. Column anther bearing two pollinia on two mace-shaped stipes, linked by a diamond-shaped viscidium; stigma concave and separated from the pollinia by a tridentate rostellum, with the lateral lobes longer than the median lobe.

Bolusiella is widely distributed in Sub-Saharan Africa ( Fig. 1 ). The Lower Guinea Domain and the Afromontane Region (Kivu-Ruwenzori regional mountain system) represent the centres of diversity of the genus because four of the six recognized taxa occur in these phytochoria.

Figures

FIGURE 1. Species richness (number of taxa per 2.5° × 2.5° quadrat) of Bolusiella in Sub-Saharan Africa.