| Parkinsonia x carterae Hawkins, 1999 |
| Parkinsonia x sonorae (Rose & I.M. Johnst. ex I.M. Johnst.) Hawkins & Felger, 2017 |
| Parosela Cav., 1802 |
| Parosela acutifolia Rydb., 1920 |
| Parosela alamosana Rose ex Rydb., 1919 |
| Parosela albiflora (A. Gray) Vail, 1894 |
| Parosela arizonica Vail, 1895 |
| Parosela arsenei J.F. Macbr., 1922 |
| Parosela atrocyanea Rydb., 1920 |
| Parosela aurea (Nutt. ex Pursh) Britton, 1894 |
| Parosela barbata (Oerst.) Rydb., 1920 |
| Parosela berlandieri (A. Gray) Rose, 1906 |
| Parosela bigelovii Rydb., 1920 |
| Parosela botterii Rydb., 1920 |
| Parosela brachystachya (A. Gray) A. Heller, 1900 |
| Parosela calycosa (A. Gray) A. Heller, 1900 |
| Parosela capitulata Rydb., 1920 |
| Parosela carnescens Rydb., 1917 |
| Parosela caudata Rydb., 1920 |
| Parosela chrysorrhiza (A. Gray) Rose, 1905 |