| Loasa triphylla subsp. rudis (Benth.) Weigend, 1996 |
| Loasa triphylla var. rudis (Benth.) Urb. & Gilg, 1900 |
| Loasaceae Juss., 1804 |
| Loaseae Rchb., 1837 |
| Loasoideae Urb. & Gilg, 1894 |
| Mentzelia L., 1753 |
| Mentzelia adhaerens Benth., 1844 |
| Mentzelia affinis Greene, 1890 |
| Mentzelia albicaulis A. Gray, 1852 |
| Mentzelia arborescens Urb. & Gilg, 1894 |
| Mentzelia aspera L., 1753 |
| Mentzelia asperula Wooton & Standl., 1913 |
| Mentzelia conzattii Greenm., 1897 |
| Mentzelia desertorum (Davidson) H.J. Thomps. & J.E. Roberts, 1971 |
| Mentzelia dispersa (S. Watson) Davidson, 1906 |
| Mentzelia galeottii Urb. & Gilg, 1900 |
| Mentzelia gracilenta Torr. & A. Gray, 1840 |
| Mentzelia gracilenta var. veatchiana (Kellogg) Jeps., 1925 |
| Mentzelia gracilis (Rydb.) H.J. Thomps. & F.H. Lewis, 1955 |
| Mentzelia gypsophila B.L. Turner, 2011 |