Chamerion danielsii or
Chamerion angustifolius (Fireweed)

Family:
Onagraceae
(Evening Primrose)
     
Weber describes C. danielsii as an octoploid related to C. angustifolius.
USDA Plants lists the two names as synonyms.


Vegetation zone:  Foothills, Montane, Subalpine
Time of bloom:  June - September
Origin:  Native
Eastern Colorado Wildflowers