A taxonomic revision of the Gnidia linearifolia (Wikstr.) B.Peterson group (Thymelaeaceae: Thymelaeoideae) of the Cape Floristic Region

Abstract

A taxonomic revision of the Gnidia linearifolia group (Thymelaeaceae: Thymelaeoideae) is presented. Species in this group are diagnosed by punctate leaves that are ciliate when young, a densely hairy hypanthium, and petaloid scales with a basal callus. We recognize five species: G. linearifolia (Wikstr.) B.Peterson, G. nana (L.f.) Wikstr., G. penicillata Licht. ex Meisn., G. scabrida Meisn. and G. tomentosa L. This account includes descriptions, complete nomenclature and typification, illustrations, geographical distribution, and a key to the species. A lectotype is designated for Gnidia scabrida and Gnidia penicillata.