Some 60-70, see text Mentzelia is a genus of about 100 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.
According to Plants of the World Online there are 100 species in this genus.
This article about plants of the order Cornales is a stub.