Tall Oregon Grape: Leaves with 5 to 9 spiny edged leaflets. Plants range from 3' to 10' tall.
Cascade Oregon Grape: Leaves with 11 to 21 spiny edged leaflets. Seldom over 30" tall, the leaves radiating out from a central spot. Their general form is somewhat reminiscent to the sword fern.
English Holly: Leaf edges with long, sharp, spines. An introduced, weedy shrub.
Evergreen Blackberry: 3 to 5 dissected leaflets. Stems with small to medium-sized, hooked stickers.
Himalayan Blackberry: 3 to 5 ovate and toothed leaflets. Stems often arched upright or climbing, with numerous, large stickers.
Salmonberry: An upright shrub to 8 feet tall. Leaflets coarsely toothed, somewhat triangular in shape, with a pointed tip. Stems may or may not be armed with sharp prickles. Flowers 5-petaled, bright pink or reddish.
Trailing Blackberry/ Dewberry: A viny plant that trails across the ground. Leaflets coarsely toothed, womewhat triangular in shape, with a pointed tip. Flowers 5-petaled, white.
Nootka Rose: Leaflets 5-7. Stems armed with numerous thicker and straight prickles, 3-11 mm long, or they may be unarmed. Flowers pink, usually solitary, and 5-8 cm in diameter. Fruit round, to 11 mm in diameter, red, and single.
Little Wild Rose: Leaflets 5-9. Stems armed with numerous slender and straight prickles to 11 mm long, or they may be unarmed. Flowers pink, usually solitary, and 2 cm in diameter. Fruit round, small, red, and single.
Clustered Wild Rose: Leaves with 5-7 leaflets. Stems armed with numerous straight prickles. Flowers pink, in clusters, to about 3 cm in diameter. Fruit bright red, somewhat pointed at the bottom end, and in clusters.
Pearhip Rose: A common wild rose found in the eastern Columbia River Gorge and east of the Cascade Mts. Leaves with 5-9 leaflets. Stems armed with numerous straight to slightly curved prickles. Flowers pink, to 5 cm in diameter.
Dog Rose: An escaped domestic rose found occasionally west of the Cascade Mts. Leaves with 5-7 sharply toothed leaflets. Stems armed with numerous curved prickles. Flowers white or pink, to 5 cm in diameter.
Prickly Currant: Stems with numerous small, golden prickles. Leaves with 5 deeply indented lobes and a heart-shaped base.
or Hawthorn Trees: Large shrubs to small trees, with straight, round, 1/4" to 1" long thorns on the stems.