Genus Mentzelia
Loasa Family (Loasaceae)

Blazing-star plant on dry hillside
    -- Goshen Canyon -- Utah County, Utah

(Mentzelia laevicaulis)

A course weedy plant which grows on rocky hillsides and in disturbed areas.

There are barbed hairs on the leaves, which may stick to clothing and to animal fur.

Blazing-star flowers
    -- each has 5 petals and many stamens

Each plant usually has many spectacular large yellow flowers growing on branching stems. They bloom in the evening and close the next day when the sun gets high.

Each flower is 3 or 4 inches across, with five yellow petals and hundreds of stamens.