| Stenaria rupicola (Greenm.) Terrell, 2001 |
| Stenaria sanchezii Lorence, 2009 |
| Stenaria umbratilis (B.L. Rob.) Terrell, 2002 |
| Stenaria umbratilis subsp. brevipedicellata (Terrell) Borhidi, 2012 |
| Stenaria umbratilis var. brevipedicellata Terrell, 2001 |
| Stenostomum C.F. Gaertn., 1806 |
| Stenostomum aromaticum (Cast.-Campos & Lorence) Borhidi, 1995 |
| Stenostomum lucidum (Sw.) C.F. Gaertn., 1806 |
| Stenotis Terrell, 2001 |
| Stenotis arenaria (Rose) Terrell, 2001 |
| Stenotis asperuloides (Benth.) Terrell, 2001 |
| Stenotis australis (I.M. Johnst.) Terrell, 2001 |
| Stenotis brevipes (Rose) Terrell, 2001 |
| Stenotis gracilenta (I.M. Johnst.) Terrell, 2001 |
| Stenotis greenei (A. Gray) Terrell & H. Rob., 2010 |
| Stenotis mucronata (Benth.) Terrell, 2001 |
| Stenotis peninsularis (Brand) Terrell, 2001 |
| Steyermarkia Standl., 1940 |
| Steyermarkia guatemalensis Standl., 1940 |
| Strumpfia Jacq., 1760 |