Smooth Blue Aster (Symphyotrichum laeve), family Asteraceae (Aster) According to the USDA Plant Database there are approximately 90 species in the genus Symphyotrichum.
William Weber, in his book
Colorado Flora Eastern Slope, speaks of the ambiguous state of the nomenclature of Asters. He does not list any species of the genus Symphyotrichum in Colorado. Per
WIKIPEDIA:
'The majority are endemic in North America, but several species also occur in the West Indies, Central and South America, as well as in eastern Eurasia. Furthermore, many species have been introduced to Europe as garden specimens, most notably the New England aster and the New York aster.' End quote. There are four subspecies of Smooth Blue Aster; laeve, concinnum, geyeri, and purpuratum. Not certain which this example is.
USES: The website
Native American Ethnobotany has a number of uses by Native American tribes on record for this plant;
'var laeve - Meskwaki Drug (Herbal Steam). Entire plant used to furnish smoke in sweatbath. var laeve - Meskwaki Drug (Stimulant). Smoke forced into nostrils of unconscious patient to revive him. var geyeri - Keres, Western Food. Flowers mixed with parched corn and eaten. var geyeri - Keres, Western Dye. Flowers mixed with white clay and used to dye wool or eggs. var geyeri - Keres, Western Other (Paint). Petals mixed with whitewash.' End quote.