| Parosela leporina var. thouini (Schrank) J.F. Macbr., 1922 |
| Parosela lesueurii Tharp & F.A. Barkley, 1946 |
| Parosela leucantha Rydb., 1920 |
| Parosela leucostachya (A. Gray) Rose, 1906 |
| Parosela leucostoma (Schltdl.) Rose, 1906 |
| Parosela longifolia Rose ex Rydb., 1920 |
| Parosela longipila Rydb., 1919 |
| Parosela lucida Rose ex Rydb., 1920 |
| Parosela lumholtzii (B.L. Rob. & Fernald) Vail, 1899 |
| Parosela lutea (Cav.) Cav., 1802 |
| Parosela lutea var. caudata (Rydb.) J.F. Macbr., 1922 |
| Parosela macrostachya Rydb., 1920 |
| Parosela maritima (Brandegee) Rose, 1905 |
| Parosela melantha (Schauer) Rydb., 1920 |
| Parosela minor Rose, 1905 |
| Parosela minutiflora Rose, 1905 |
| Parosela mollis (Benth.) A. Heller, 1900 |
| Parosela mollis var. neomexicana (A. Gray) J.F. Macbr., 1922 |
| Parosela nana (Torr.) A. Heller, 1895 |
| Parosela neglecta (B.L. Rob.) Rose, 1905 |