Cirsium sp., head with skipper. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium coloradense, whole plant - reduced form. Family Asteraceae, Subclass Asteridae. Origin: Nati...
Cirsium horridulum, white form. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium horridulum, Inflorescence. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium sp., head with skipper. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium sp., whole plant . Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium sp., heads - butterfly--Cabbage White. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium sp., head - butterfly--Pipevine Swallowtail. Family Asteraceae, Subclass Asteridae. Origin: ...
Cirsium engelmannii, head. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium coloradense, heads - top view. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium coloradense, heads - side view. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium texanum, heads in various stages of maturity. Family Asteraceae, Subclass Asteridae. Origin:...
Cirsium horridulum, pink head. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium texanum, phyllaries. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium horridulum, pink head. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium horridulum, white head. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium coloradense, whole plant - reduced form. Family Asteraceae, Subclass Asteridae. Origin: Nati...
Cirsium horridulum, white form. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium horridulum, Inflorescence. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium sp., head with skipper. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium sp., whole plant . Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium sp., heads - butterfly--Cabbage White. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium sp., head - butterfly--Pipevine Swallowtail. Family Asteraceae, Subclass Asteridae. Origin: ...
Cirsium engelmannii, head. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium coloradense, heads - top view. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium coloradense, heads - side view. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium texanum, heads in various stages of maturity. Family Asteraceae, Subclass Asteridae. Origin:...
Cirsium horridulum, pink head. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium texanum, phyllaries. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium horridulum, pink head. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium horridulum, white head. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium coloradense, whole plant - reduced form. Family Asteraceae, Subclass Asteridae. Origin: Nati...
Cirsium horridulum, white form. Family Asteraceae, Subclass Asteridae. Origin: Native
Cirsium horridulum, Inflorescence. Family Asteraceae, Subclass Asteridae. Origin: Native