| Sobralia warszewiczii Rchb. f., 1852 |
| Sobralia xantholeuca hort. ex B.S. Williams, 1885 |
| Sobralieae Pfitzer, 1887 |
| Sotoa Salazar, 2010 |
| Sotoa confusa (Garay) Salazar, 2010 |
| Spathiger Small, 1913 |
| Spathiger durangense Hágsater & Holman, 1984 |
| Spathiger ramosus (Jacq.) Britton, 1924 |
| Spathiger roigii Acuña, 1939 |
| Spathiger scriptum A. Rich. & Galeotti, 1845 |
| Spathiger strobiliferus (Rchb. f.) Small, 1933 |
| Specklinia Lindl., 1830 |
| Specklinia abbreviata (Schltr.) Luer, 2004 |
| Specklinia acicularis (Ames & C. Schweinf.) Pridgeon & M.W. Chase, 2001 |
| Specklinia alata (A. Rich. & Galeotti) Solano & Soto Arenas, 2003 |
| Specklinia blancoi (Pupulin) Soto Arenas & Solano, 2003 |
| Specklinia brighamii (S. Watson) Pridgeon & M.W. Chase, 2001 |
| Specklinia ciliaris Lindl., 1838 |
| Specklinia comayaguensis (Ames) Luer, 2004 |
| Specklinia corniculata (Sw.) Steud., 1840 |