Cassia covesii A.Gray Earleocassia covesii (A.Gray) Britton & Rose Senna covesii (desert senna, Coues' senna,[1] rattleweed, rattlebox, dais, or cove senna) is a perennial subshrub in the family Fabaceae, native to the Mojave Desert and Sonoran Desert in southeastern California, southern Nevada, and Arizona in the United States, and northern Baja California in Mexico.

It is found on desert plains and in sandy washes between 500 and 600 m above sea level, and is very common in Joshua Tree National Park.

The flowers are yellow in color, with five rounded petals about 12 mm long.

This shrub is often planted by landscapers and as part of roadside wildflower programs.

Sulphur butterflies use the plant as a larval food source.