| Asteraceae | |
Pentachaeta exilis subsp. aeolica
| Van Horn & Ornduff | Univ. Calif. Publ. Bot. 65: 37, f. 12 [map] | 1973 |
| Asteraceae | |
Pentachaeta exilis var. aphantochaeta
| A. Gray | Bot. California 1: 305–306 | 1876 |
| Asteraceae | |
Pentachaeta exilis var. discoidea
| A. Gray | Bot. California 1: 305 | 1876 |
| Asteraceae | |
Pentachaeta exilis subsp. exilis
| | | |