Enclosed is a plant we took a photo of at the height of 12000ft in Colorado Could you please help me match the name with a picture? thank you.
Cirsium coloradense aka Cirsium scariosum var. coloradense, I believe (some sites may simply have it as Cirsium scariosum). The various mountain thistle species of western North America often form hybrids or are so variable in characteristics as to intergrade with other thistle species.
