Grindelia squarrosa var. serrulata (Rydb.) Steyerm.
Asteraceae
M. A. Wetter
534
1979-09-08 - 1979-01-25
08 Sep 1979
United States of America, Colorado, Douglas Co., Along S Interstate 25 at Castle Rock, first exit for Castle Rock. Waste area between Exxon gas station and resturant parking lot.