| Orchidaceae | |
Diadenium barkeri
| (Lindl.) Benth. & Hook. f. | Gen. Pl. 3: 558 | 1880 |
| Orchidaceae | |
Diadenium barkeri
| (Lindl.) Benth. & Hook. f. ex B.D. Jacks. | Index Kew. 1: 741 | 1893 |
| Orchidaceae | |
Diadenium bennettii
| Garay | Orchid Rev. 75: 414, f. 184 | 1967 |
| Orchidaceae | |
Diadenium ecuadorense
| Garay | Arch. Jard. Bot. Rio de Janeiro 13: 44 | 1954 |
| Orchidaceae | |
Diadenium micranthum
| Poepp. & Endl. | Nov. Gen. Sp. Pl. 1: 41, t. 71 | 1835 [1836] |
| Orchidaceae | |
Diadenium suareziorum
| Kolan., Szlach. & Mystkowska | Wulfenia 22: 241 | 2015 |