Black Hawthorn, Douglas Hawthorn: Crataegus douglasii (Synonyms: Crataegus columbiana, Crataegus columbiana var. columbiana, Crataegus douglasii var. douglasii) ?? - Big, coarse shrub or small tree up to 12 meters high with rough, scaly, brown bark. Young branches dark red-brown. Thorns 12-25 mm long. Leaves 25-75 mm long, broadly obovate, double-toothed above the base. Flowers usually many in flat-topped corymbs. Flowers about 15 mm wide with short triangular sepals. Petals white and orbicular in shape. Stamens number 10 with pink anthers.
Huckleberry Hawthorn, Suksdorf Hawthorn, Suksdorf's Hawthorn: Crataegus gaylussacia (Synonyms: Crataegus douglasii var. suksdorfii, Crataegus suksdorfii) - Small tree or big shrub. Small branches pale grayish brown and thorns stout, 8-12 mm long. Leaves similar to variety douglasii but narrower. Flowers 12-15 mm wide with 15-20 stamens.