A review of generic concepts in the Stilbaceae

Abstract

The generic concepts in the Cape endemic family Stilbaceae (± 14 species), are reviewed. Proposals by various authors to include Retzia capensis Thunb. in the Stilbaceae are supported. Xeroplana Briq. and Eurylobium Hochst. are shown to be congeneric with Stilbe L., resulting in one new combination and one new name in Stilbe. Seven currently recognised species of Stilbe are enumerated. A key to the genera of the Stilbaceae, as presently understood, is provided. A new genus Kogelbergia is described to accommodate two species previously assigned to Stilbe sect. Amphistilbe and two new combinations in Kogelbergia are proposed.