| Helleriella guerrerensis Dressler & Hágsater, 1975 |
| Helleriella nicaraguensis A.D. Hawkes, 1966 |
| Heteranthocidium Szlach., Mytnik & Romowicz, 2006 |
| Heteranthocidium pollardii (Dodson & Hágsater) Szlach., Mytnik & Romowicz, 2006 |
| Heterotaxis Lindl., 1826 |
| Heterotaxis crassifolia Lindl., 1826 |
| Heterotaxis faecalis Archila & Chiron, 2014 |
| Heterotaxis maleolens (Schltr.) Ojeda & Carnevali, 2005 |
| Heterotaxis sessilis (Sw.) F. Barros, 2002 |
| Hexadesmia Brongn., 1842 |
| Hexadesmia confusa Schltr., 1912 |
| Hexadesmia crurigera Lindl., 1844 |
| Hexadesmia fasciculata Brongn., 1842 |
| Hexadesmia hondurensis Ames, 1933 |
| Hexadesmia lindeniana A. Rich. & Galeotti, 1845 |
| Hexadesmia micrantha Lindl., 1844 |
| Hexadesmia pachybulbon Schltr., 1922 |
| Hexadesmia reedii Rchb. f., 1872 |
| Hexadesmia rhodoglossa Rchb. f., 1856 |
| Hexadesmia sessilis Rchb. f., 1872 |