Acleisanthes angustifolia

A primarily Mexican species entering the U.S. only in the Big Bend region of Texas.

Plant habit near the Croton Spring Trail at Big Bend National Park, 15 Apr 2007.

Cleistogamous flowers near the Croton Spring Trail, 15 Apr 2007.

Cauline leaves near the Croton Spring Trail, 15 Apr 2007.