The base of the Ceropegia fimbriata subsp. geniculata flower is dully grey-green and faintly striped, bulging roundly.
The flowers grow solitary or in small clusters at the leaf axils of the plant’s twining stems. A small, leafy bract subtends the pedicel at its node, the nodes widely spaced.
Five short, pointed sepal lobes clutch the base of the corolla (Vlok and Schutte-Vlok, 2015; Leistner, (Ed.), 2000; Bond and Goldblatt, 1984; https://desert-plants.blogspot.com).