| Pleurothallis cedralensis Ames, 1923 |
| Pleurothallis cerea Ames, 1923 |
| Pleurothallis chiquindensis F. Lehm. & Kraenzl., 1899 |
| Pleurothallis chiriquensis Schltr., 1922 |
| Pleurothallis chrysantha Lindl., 1859 |
| Pleurothallis ciliaris (Lindl.) L.O. Williams, 1942 |
| Pleurothallis circumplexa Lindl., 1838 |
| Pleurothallis cobanensis Schltr., 1912 |
| Pleurothallis colothrix Luer, 1981 |
| Pleurothallis comayaguensis Ames, 1936 |
| Pleurothallis conanthera Kraenzl., 1881 |
| Pleurothallis congesta A. Rich. & Galeotti, 1845 |
| Pleurothallis corazonica Lehm. ex Kraenzl., 1899 |
| Pleurothallis corniculata (Sw.) Lindl., 1842 |
| Pleurothallis correllii Luer, 1976 |
| Pleurothallis costaricensis Schltr., 1918 |
| Pleurothallis crassifolia Rchb. f., 1850 |
| Pleurothallis crenata Lindl., 1846 |
| Pleurothallis crocodiliceps Rchb. f., 1855 |
| Pleurothallis dayana (Rchb. f.) L.O. Williams, 1940 |