| Desmodium pletocarpus Hemsl., 1813 |
| Desmodium plicatum Cham. & Schltdl., 1830 |
| Desmodium podocarpum Hook. & Arn., 1841 |
| Desmodium polystachyum Schltdl., 1838 |
| Desmodium prehensile Schltdl., 1838 |
| Desmodium pringlei S. Watson, 1888 |
| Desmodium procumbens (Mill.) Hitchc., 1893 |
| Desmodium procumbens var. exiguum (A. Gray) B.G. Schub., 1940 |
| Desmodium procumbens var. longipes (Schindl.) B.G. Schub., 1940 |
| Desmodium procumbens var. procumbens (Mill.) Hitchc., 1893 |
| Desmodium procumbens var. transversum (B.L. Rob. & Greenm.) B.G. Schub., 1940 |
| Desmodium prodigum (Schindl.) Standl., 1936 |
| Desmodium prostratum Brandegee, 1891 |
| Desmodium pseudoamplifolium Micheli, 1903 |
| Desmodium psilocarpum A. Gray, 1853 |
| Desmodium psilophyllum Schltdl., 1838 |
| Desmodium purpureum (Mill.) Fawc. & Rendle, 1920 |
| Desmodium purpusianum (Schindl.) B.G. Schub., 1941 |
| Desmodium purpusii Brandegee, 1914 |
| Desmodium quercetorum Standl., 1937 |