Buckthorn (Rhamnaceae) Family
Fendler's buckbrush (Ceanothus fendleri) -- in May and June -- Well Gulch Nature Trail, Lory State Park, CO white and cream CO-LSP
Jersey tea (Ceanothus herbaceus) -- in July -- Mill Creek Link Trail, Lory State Park, CO white and cream CO-LSP
deerbrush (Ceanothus integerrimus) -- in July -- Lassen Volcanic National Park, CA blue and purple
blueblossom (Ceanothus thyrsiflorus) -- in July -- Klamath Falls to Ashland (Rt. 66), OR blue & purple
snowbrush ceanothus (Ceanothus velutinus) -- in June -- Glacier National Park, MT white and cream MT-N
snowbrush ceanothus (Ceanothus velutinus) -- in July -- Cub Lake Trail, Rocky Mountain National Park, CO CO-RMNP
common buckthorn (Rhamnus cathartica) -- in March -- Tangelwood, Fort Collins Natural Area, CO yellow & orange
common buckthorn (Rhamnus cathartica) -- in September -- Williams, Fort Collins Natural Area, Larimer County, CO