There were three early representations of this venerable species published within a year of each other. They are:
- Hooker’s Exotic Flora, the first publication of the species in 1827, as Didymocarpus rexii
- Loddiges’ Botanical Cabinet, 1827, also as D. rexii
- This one, from Edwards’ Botanical Register, under the current name Streptocarpus rexii; it is a superior representation of the species
Another somewhat later print from Curtis can be seen here.