| Pleurothallis peraltensis Ames, 1923 |
| Pleurothallis peregrina Ames, 1923 |
| Pleurothallis pfavii Rchb. f., 1886 |
| Pleurothallis pisinna Luer, 1991 |
| Pleurothallis platystylis Schltr., 1912 |
| Pleurothallis poasensis Ames, 1922 |
| Pleurothallis polyliria Endrés & Rchb. f., 1871 |
| Pleurothallis polystachya A. Rich. & Galeotti, 1845 |
| Pleurothallis pringlei Schltr., 1906 |
| Pleurothallis prorepens (Rchb. f.) Ames, 1934 |
| Pleurothallis puberula Klotzsch, 1854 |
| Pleurothallis pubescens Lindl., 1836 |
| Pleurothallis purpusii Schltr., 1915 |
| Pleurothallis racemiflora Lindl., 1825 |
| Pleurothallis ramentacea Garay & Dunst., 1976 |
| Pleurothallis repens Ames, 1908 |
| Pleurothallis resupinata Ames, 1908 |
| Pleurothallis retusa (Lex.) Lindl., 1842 |
| Pleurothallis rhynchoglossa Schltr., 1915 |
| Pleurothallis rufa Rolfe, 1898 |