Prunus

Prunus emarginata (Bitter Cherry )
Prunus subcordata (Klamath Plum )
Prunus virginiana var. demissa (Western Chokecherry)

Purshia

Purshia tridentata (Bitterbrush )

Quercus

Quercus chrysolepis (Canyon Live Oak)
Quercus garryana (Oregon White Oak )
Quercus garryana var. breweri (Brewer's Oak)
Quercus kelloggii (California Black Oak)
Quercus sadleriana (Sadler Oak)
Quercus vacciniifolia (Huckleberry Oak)

Rhamnus

Rhamnus purshiana (Cascara )

Rhododendron (defines evaluations)

Rhododendron macrophyllum (Western Rhododendron)
Rhododendron occidentale (Western Azalea)
Rhododendron occidentale 'Irene Koster' (Irene Koster (Western) Azalea)

Rhus

Rhus glabra (Smooth Sumac )
Rhus trilobata (Skunkbush Sumac )

Ribes

Ribes aureum (Golden Currant )
Ribes cereum (Wax Currant)
Ribes divaricatum (Coast Black Gooseberry )
Ribes nevadense (Mountain Pink Currant )
Ribes roezlii (Sierra Gooseberry )
Ribes sanguineum (Flowering Currant )
Ribes sanguineum 'Elk River Red' (Elk River Red Flowering Currant)
Ribes sanguineum 'Pokey's Pink' (Pokey's Pink Flowering Currant)
Ribes sanguineum White Icicle™ (White Icicle Flowering Currant)

Robinia

Robinia pseudoacacia (Black Locust)
Robinia pseudoacacia Twisty Baby™ (Twisty Baby Black Locust )
Robinia pseudoacacia 'Umbraculifera' (Mushroom Locust )

Rosa

Rosa gymnocarpa (Little Wood Rose )
Rosa multiflora (Multiflora Rose)
Rosa nutkana (Nootka Rose )
Rosa pisocarpa (Clustered Rose)
Rosa rubiginosa (Sweetbriar Rose )
Rosa woodsii (Woods' Rose)

Rubus

Rubus armeniacus (Himalayan Blackberry )
Rubus dicolor (Himalayan Blackberry )
Rubus laciniatus (Evergreen Blackberry )
Rubus leucodermis (Blackcap)
Rubus parviflorus (Thimbleberry )
Rubus spectabilis (Salmonberry)
Rubus ursinus (Trailing Blackberry )

Sambucus

Sambucus cerulea (Blue Elderberry )
Sambucus racemosa (Red Elderberry)

Shepherdia

Shepherdia argentea (Silver Buffaloberry )
Shepherdia canadensis (Russet Buffaloberry )

Sorbus

Sorbus scopulina (Greene Mountain Ash )
Sorbus sitchensis (Sitka Mountain Ash )

Spiraea

Spiraea betulifolia (Birch-leaf Spirea )
Spiraea densiflora (Rose Meadowsweet)
Spiraea douglasii (Douglas Spirea )
Spiraea splendens (Mountain Spirea)

Symphoricarpos

Symphoricarpos albus (Common Snowberry)
Symphoricarpos mollis (Spreading Snowberry)
Symphoricarpos rotondifolius (Roundleaf Snowberry)

Toxicodendron

Toxicodendron diversilobum (Poison Oak)

Ulex

Ulex europaeus (Common Gorse )

Umbellularia

Umbellularia californica (Oregon Myrtle )

Vaccinium

Vaccinium membranaceum (Big Huckleberry )
Vaccinium ovatum (Box Huckleberry )
Vaccinium parvifolium (Red Huckleberry )
Vaccinium uliginosum (Bog Blueberry)

Vancouveria

Vancouveria hexandra (Northern Inside-out Flower)
Vancouveria planipetala (Small Inside-out Flower )

Viburnum

Viburnum edule (Mooseberry )
Viburnum ellipticum (Oregon Viburnum )