A new species of Kalaharia (Lamiaceae) from Central Africa

Background – The controversial genus Kalaharia Baill., often placed in synonymy with Clerodendrum L., was known by just one species: K. uncinata (Schinz) Moldenke. A second species, Kalaharia schaijesii, confused with it for a long time, is described based mainly on field observations. Methods – Classical methods of herbarium taxonomy have been applied. Key results – The new species is clearly different from Kalaharia uncinata by his habit prostrate, not erect and bushy, the flowers yellow and subactinomorphic, not red to orange and distinctly zygomorphic, the calyx shorter and the stamens enclosed, not exserted.