Suddee No year - Suddee S, Paton AJ, Parnell JAN (2004) A Taxonomic Revision of Tribe Ocimeae Dumort. (Lamiaceae) in Continental South East Asia II. Plectranthinae. Kew Bulletin 59(3): 379-414. doi: 10.2307/4110950.
There is no corrections for Plectranthus albicalyx yet.