| Pelexia roseoalba Rchb. f., 1854 |
| Pelexia saccata Rolfe, 1895 |
| Pelexia schaffneri (Rchb. f.) Schltr., 1920 |
| Pelexia scintillans E.W. Greenw., 1990 |
| Pelexia spiranthoides Lindl., 1826 |
| Pelexia stenorrhynchoides Griseb., 1866 |
| Pelexia subaequalis Ames, 1923 |
| Pelexia tomentosa (Vell.) Schltr., 1920 |
| Pelexia weirii (Rchb. f.) Schltr., 1920 |
| Pelexia wendlandiana Kraenzl., 1892 |
| Peramium G. Salisb. ex J.M. Coult., 1894 |
| Peramium decipiens (Hook.) Piper, 1906 |
| Peramium giganteum (Douglas ex Hook.) J.M. Coult., 1894 |
| Peramium menziesii (Lindl.) Morong, 1894 |
| Peristeria Hook., 1831 |
| Peristeria barkeri Bateman, 1838 |
| Peristeria longiscapa A. Rich. & Galeotti, 1845 |
| Phaedrosanthus Neck. & Kuntze, 1903 |
| Phaedrosanthus ciliaris (L.) Kuntze, 1903 |
| Phaedrosanthus cochleatus (L.) Kuntze, 1903 |