What is "ceratandra"

Ceratandra is a genus of flowering plants from the orchid family, Orchidaceae. It contains 6 known species, all endemic to South Africa.

1. Ceratandra atrata (L.) T.Durand & Schinz
2. Ceratandra bicolor Sond. ex Bolus
3. Ceratandra globosa Lindl.
4. Ceratandra grandiflora Lindl.
5. Ceratandra harveyana Lindl.
6. Ceratandra venosa (Lindl.) Schltr.