What is "chilopsis"

Chilopsis is a monotypic genus of flowering plants containing the single species Chilopsis linearis.

It is a shrub or tree native to the southwestern United States and Mexico. The common name is desert willow or desert-willow because of its willow-like leaves, but it is a member of the catalpa family, Bignoniaceae. It is commonly seen in washes and along riverbanks at elevations below 1800m in its range.