Echinacea angustifolia (Narrow-leaved Purple Coneflower)
https://www.minnesotawildflowers.info/flower/narrow-leaved-purple-coneflower#:~:text=purpurea%20(Eastern%20Purple%20Coneflower)%20has,in%20the%20native%20plant%20trade.
“Research concluded that of the 40 genetically diverse populations of Echinacea studied, there were ten distinct species. Only Echinacea angustifolia is native to Colorado.” Source: http://coloradomountaingardener.blogspot.com/2019/04/