Asclepias subverticillata
Family: Milkweed (Asclepiadaceae)
Size: To 0.5 in. wide in clusters to 1.5 in. wide
Date: 7/26/2001
Other names:
Notes: 27 species of Asclepias in Arizona.
This plant is found on the Appleton-Whittell Research Ranch Working Check list of flora.