| Pleurothallopsis Porto & Brade, 1937 |
| Pleurothallopsis ujarensis (Rchb. f.) Pridgeon & M.W. Chase, 2001 |
| Pogonia Juss., 1789 |
| Pogonia cubensis Rchb. f., 1859 |
| Pogonia hassleriana Cogn. ex Chodat & Hassl., 1907 |
| Pogonia lutea Schltr., 1910 |
| Pogonia macrophylla Lindl., 1858 |
| Pogonia mexicana S. Watson, 1891 |
| Pogonia yucatanensis (Ames) L.O. Williams, 1951 |
| Pogonieae Pfitzer ex Garay & Dunst., 1961 |
| Pollardia Withner & P.A. Harding, 2004 |
| Pollardia tripunctata (W.E. Higgins) Withner & P.A. Harding, 2004 |
| Polystachya Hook., 1824 |
| Polystachya caracasana Rchb. f., 1854 |
| Polystachya cerea Lindl., 1840 |
| Polystachya clavata Lindl., 1842 |
| Polystachya elatior (Rchb. f.) Peraza & Carnevali, 2012 |
| Polystachya foliosa (Hook.) Rchb. f., 1863 |
| Polystachya guatemalensis Rchb. f., 1921 |
| Polystachya lineata Rchb. f., 1869 |