Cycnium tubulosum (L.f.) Engl. [ Rhamphicarpa tubulosa (L.f.) Benth.]
no HD illustration available (m1)
Cycnium tubulosum (L.f.) Engl. [ Gerardia tubulosa L.f.] [Scrophulariaceae]
I.B. Pole Evans, Fl. Pl. Afr., vol. 2 : t. 50 (1922) [K.A. Lansdell]