A rare new species of the genus Wiborgiella (Crotalarieae, Fabaceae)
Abstract
The new species Wiborgiella argentea is described. It is closely similar to Wiborgiella leipoldtiana and W. fasciculata
but differs in its single-stemmed habit, densely sericeous leaves, wing petals that are longer than the keel and de-
tails of the fruit. It is known from the Robertson area where it occurs in Robertson Karoo, on rocky, south facing
shale slopes. The genus Wiborgiella Boatwr. & B.-E.van Wyk comprises nine
species of legumes endemic to the Greater Cape Floristic Region of
South Africa (Boatwright et al., 2010). It was described to accommo-
date several anomalous species of the genus Lebeckia Thunb. s.l. as
well as one species of Wiborgia Thunb.