Perityle staurophylla var. staurophylla (Barneby) Shinners  
Family: Asteraceae
Perityle staurophylla var. staurophylla image
Patrick Alexander  
Perityle staurophylla var. staurophylla
Perityle staurophylla var. staurophylla image
Patrick Alexander  
The National Science Foundation
This project made possible by National Science Foundation Award 1410069