| Scaphyglottis oblonga L.O. Williams, 1941 |
| Scaphyglottis pachyphylla L.O. Williams, 1946 |
| Scaphyglottis prolifera (Lindl.) Cogn., 1898 |
| Scaphyglottis prolifera var. major (C. Schweinf.) Brieger & P.F. Hunt, 1969 |
| Scaphyglottis pumila Ames, 1941 |
| Scaphyglottis purpusii Schltr., 1918 |
| Scaphyglottis reedii (Rchb. f.) Ames, 1941 |
| Scaphyglottis sessilis (Rchb. f.) Foldats, 1968 |
| Scaphyglottis tenuis L.O. Williams, 1941 |
| Scaphyglottis wercklei Schltr., 1923 |
| Scaphyglottis wercklei var. major C. Schweinf., 1937 |
| Scelochilus Klotzsch, 1841 |
| Scelochilus tuerckheimii Schltr., 1911 |
| Schiedeella Schltr., 1920 |
| Schiedeella affinis (C. Schweinf.) Salazar, 2011 |
| Schiedeella albovaginata (C. Schweinf.) Burns-Bal., 1981 |
| Schiedeella amesiana Garay, 1982 |
| Schiedeella arizonica P.M. Br., 2000 |
| Schiedeella chartacea (L.O. Williams) Burns-Bal., 1986 |
| Schiedeella chloraeformis (A. Rich. & Galeotti) Burns-Bal., 1981 |