A new species of Chlorophytum (asparagaceae) from the succulent karoo biome, namibia – with an updated key for Chlorophytum of Namibia

Abstract

Background and aims – Following a revision of family Anthericaceae for Flora of Namibia, a new species is described from southern Namibia. To elucidate its taxonomic affinity, a molecular analysis is carried out on representative taxa of Chlorophytum subgroups. Methods – Morphological study and molecular phylogenetic analysis. Key results – Chlorophytum boomense Kativu sp. nov. is described. It is morphologically similar to C. subpetiolatum, particularly in its fusiform roots that are swollen at base and tapered towards the tips. The species differs in floral morphology and habitat. Chlorophytum boomense is found in a very dry area and is only known from the Ai-Ais Hotsprings Game Park in Namibia, while C. subpetiolatum is a wide-spread, semi-humid to humid tropical species. Phylogenetic analysis places the taxon in an isolated position, separate from taxa that superficially resemble it. A preliminary IUCN conservation status of VU D2 is assigned to the new species.