| Parosela sessilis (A. Gray) Rydb., 1920 |
| Parosela spiciformis Rose, 1905 |
| Parosela submontana Rose, 1905 |
| Parosela thouinii (Schrank) Rydb., 1920 |
| Parosela thyrsiflora (A. Gray) Vail, 1897 |
| Parosela townsendii Rydb., 1920 |
| Parosela triphylla (Sessé & Moc.) J.F. Macbr., 1922 |
| Parosela tsugoides Rydb., 1920 |
| Parosela unifoliata (B.L. Rob. & Greenm.) Rose, 1905 |
| Parosela urceolata (Greene) A. Heller, 1910 |
| Parosela veluta (Brandegee) Rose, 1906 |
| Parosela vernicia Rose, 1905 |
| Parosela vernicia var. citrina (Rydb.) J.F. Macbr., 1922 |
| Parosela versicolor (Zucc.) Rydb., 1920 |
| Parosela walkerae Tharp & F.A. Barkley, 1946 |
| Parosela wardii Rydb., 1920 |
| Parosela warnockii Tharp & F.A. Barkley, 1946 |
| Parosela watsoni Rose, 1906 |
| Parosela whitehousae Tharp & F.A. Barkley, 1946 |
| Parosela wislizeni (A. Gray) Vail, 1894 |