Möller, M., K. Nishii, M. W. Callmander, P. B. Phillipson & O. Poncy (2015). Rearranging specimens on herbarium type sheets of Streptocarpus betsiliensis Humbert (Gesneriaceae). Candollea 70: 145–150. In English, English and French abstracts.
During recent herbarium research on the Malagasy species of Gesneriaceae, a hitherto undetected mixed collection of the type of Streptocarpus betsiliensis Humbert (Perrier de la Bâthie 12482), was observed at the Paris herbarium (P). Of the three sheets present, one, the holotype [P00088746], comprised only Streptocarpus betsiliensis specimens, while the two isotypes, [P00088747, P00088748], were found to comprise a mixture of this species and a closely related and easily confused species, Streptocarpus lanatus MacMaster. As a result of this, the specimens on the mixed sheets were physically separated and the collections were distinguished by the suffixes A and B. They were then remounted to form species-specific sheets, rescanned, and the databases at P updated accordingly.