Thelesperma megapotamicum
Family: Composite or Sunflower (Compositae)
Size: To 0.5 in.
Date: 5/21/2001
Other names: Colorado Greenthread, cota
Notes: No ray flowers, only disk flowers. 3 species of Thelesperma in Arizona.
This plant is found on the Appleton-Whittell Research Ranch Working Check list of flora.