Buckthorn (Rhamnaceae) Family

ceanothus

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

rhamnus

common buckthorn (Rhamnus cathartica) -- in March -- Tangelwood, Fort Collins Natural Area, CO     yellow & orange