Summerhayes, V.S. (1958) African orchids XXV Kew Bulletin 13(1) 57-87
| Species | FZ divisions | Content |
| brevirostris Summerh. [VU] | W | |
| buchananiana (Kraenzl.) Rolfe | N,W,C,S | Description, Image |
| crocea (Schweinf. ex Rchb. f.) Rolfe | N,W,C | |
| guingangae (Rchb.f.) Rolfe | N,W | Image |
| isoetifolia P.J.Cribb [End] [LR-nt] | N,E | Description, Image |
| latipetala Summerh. [LR-nt] | B,W | |
| macroceras Summerh. [NrEnd?] | N,W | Description, Image |
| mediocris Summerh. | C,E | Description, Image |
| micrantha Summerh. [LR-lc] | ||
| pervillei Rchb. f. | N | Description, Image |
| protearum (Rchb. f.) Rolfe var. protearum | N,W,C,E | |
| protearum (Rchb.f.) Rolfe var. recurvirostra G.Will. [End] [LR-nt] | N | Description |
| trilobata Summerh. [NrEnd] [DD] | C | Description, Image |