View photos of the edible plant Streptanthus carinatus [Streptanthus arizonicus] (Arizona Jewelflower), profiled in Sonoran Desert Food Plants and Wild Edible Plants of New Mexico.

A passage from Sonoran Desert Food Plants:

Like any Mustard green, Arizona jewel flower is best steamed, sautéed, or boiled. Once heat is used to dissipate the plant’s potentially irritating volatiles, larger amounts are consumed problem–free.

A passage from Wild Edible Plants of New Mexico:

Jewel flower is common to New Mexico’s Chihuahuan Desert region. Look for it where the soil has been disturbed and winter precipitation has lingered and kept soils moister than surrounding areas.