Jannerup (K.Schum.) 2006 - Jannerup PL (2003) A revision of the genus Lasianthus (Rubiaceae) in Africa, excluding Madagascar. Nordic Journal of Botany 23(6): 641-702. doi: 10.1111/j.1756-1051.2003.tb00445.x.
There is no corrections for Lasianthus kilimandscharicus var. xanthospermus yet.