| Stelis ornata (Rchb. f.) Pridgeon & M.W. Chase, 2001 |
| Stelis ovatilabia Schltr., 1918 |
| Stelis oxypetala Schltr., 1918 |
| Stelis pachyglossa (Lindl.) Pridgeon & M.W. Chase, 2001 |
| Stelis parvibracteata Ames, 1922 |
| Stelis parvula Lindl., 1859 |
| Stelis patula Schltr., 1912 |
| Stelis perplexa Ames, 1922 |
| Stelis platystylis (Schltr.) Solano & Soto Arenas, 2008 |
| Stelis poasensis (Ames) Karremans & Chinchilla, 2019 |
| Stelis praesecta Schltr., 1923 |
| Stelis propinqua Ames, 1923 |
| Stelis punctulata (Rchb. f.) Soto Arenas, 2003 |
| Stelis purpurascens A. Rich. & Galeotti, 1845 |
| Stelis purpusii Schltr., 1918 |
| Stelis quadrifida (Lex.) Solano & Soto Arenas, 2003 |
| Stelis resupinata (Ames) Pridgeon & M.W. Chase, 2001 |
| Stelis retusa (Lex.) Pridgeon & M.W. Chase, 2001 |
| Stelis rubens Schltr., 1910 |
| Stelis rubens var. oxypetala (Schltr.) Ames, 1934 |