ericameria genus --- aster subfamily 4
rubber rabbitbrush (Ericameria nauseosa var. graveolens) -- in July -- Sand Creek National Landmark, WY yellow & orange
gall on rabbitbrush (Ericameria nauseosa var. graveolens) -- in April -- Bobcat Ridge, Fort Collins Natural Area, CO
Parry's rabbitbrush (Ericameria parryi var. parryi) -- in August -- Colorado State Forest State Park, CO yellow & orange
Parry's rabbitbrush (Ericameria parryi var. parryi) -- in September -- Marshall Pass Road, Saguache County, CO