Helianthus paradoxus Heiser  
Family: Asteraceae
Trans-Pecos Sunflower,  more...
Helianthus paradoxus image
Robert Sivinski  
Helianthus paradoxus
Helianthus paradoxus image
Robert Sivinski  
Helianthus paradoxus image
Robert Sivinski  
The National Science Foundation
This project made possible by National Science Foundation Award 1410069