Campylanthus hubaishanii, a dwarf shrub from the coastal mountains of southeastern Yemen, is described as a species new to science and illustrated. It is the fifth species of the genus known from mainland Yemen. The new species is compared and a closer relationship suggested with C. sedoides from coastal Jiddat al Harasis, central Oman. Based on collections made by the authors during the last years, new data on the distribution and variation of C. antonii, C. junceus and C. pungens in Yemen are also provided.
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