| Orchidaceae | |
Otostylis alba
| (Ridl.) Summerh. | Kew Bull. 293 | 1951 |
| Orchidaceae | |
Otostylis brachystalix
| (Rchb. f.) Schltr. | Orchis 12: 40 | 1918 |
| Orchidaceae | |
Otostylis hirtzii
| Dodson | Icon. Pl. Trop. 10: t. 976 | 1984 |
| Orchidaceae | |
Otostylis lepida
| (Linden & Rchb. f.) Schltr. | Orchis 12: 40 | 1918 |
| Orchidaceae | |
Otostylis paludosa
| (Cogn.) Schltr. | Repert. Spec. Nov. Regni Veg. 15: 214 | 1918 |
| Orchidaceae | |
Otostylis venusta
| (Ridl.) Schltr. | Orchis 12: 41 | 1918 |