Mentzelia is a genus of about 60-70 species of flowering plants in the family Loasaceae, native to the Americas. The genus comprises annual, biennial, and perennial herbaceous plants and a few shrubs.
They are commonly called blazing stars or stickleafs; other names include "evening stars" and "moonflowers".
The Collaborative International Dictionary
Mentzelia \Mentzelia\ prop. n. A genus of bristly herbs or subshrubs of Western America lacking stinging hairs.
Syn: genus Mentzelia.