Darbyshire, I., and A. O. Massingue. “TWO NEW SPECIES OF STREPTOCARPUS (GESNERIACEAE) FROM TROPICAL AFRICA”. Edinburgh Journal of Botany 71, no. 1 (February 24, 2014): 3–13. Accessed September 3, 2026. https://journals.rbge.org.uk/ejb/article/view/1528.