Clematis drummondii is a species of flowering plant in the buttercup family, Ranunculaceae, that is native to the Southwestern United States (Arizona, New Mexico, and Texas) and northern Mexico. Common names include
old man's beard,
Texas virgin's bower, and
barba de chivato. It is a white-flowered vine that can be found clambering among other wildflowers, on shrubs and on fence rows. The natural habitat of
C. drummondii includes the Chihuahuan and Sonora
(Wikipedia)