Crossosoma bigelovii, known by the common name ragged rockflower, is one of only a few species in the flowering plant family Crossosomataceae.

It is intricately divided into thorn-tipped branches lined with clusters of small, deciduous, gray-green leaves no longer than about 1.5 centimeters.

The inflorescence bears a single flower, which has 5 white to purple-tinged petals about a centimeter long and narrowing to claws at their bases.

[2] Ragged rockflower is occasionally used as an ornamental plant in habitat gardens and natural landscaping.

It is a difficult plant for the average homeowner to grow, as over-watering will kill it.