* Big-leaf Maple: Acer
macrophyllum
* Pale-anthered Glacier Lily: Erythronium grandiflorum var. pallidum
* Chocolate Lily: Fritillaria affinis
* Yellow Bells: Fritillaria pudica
* Miner's Lettuce: Claytonia perfoliata
* Line-leaf Montia: Montia linearis
* Upland Larkspur: Delphinium nuttallianum
* Western Buttercup: Ranunculus occidentalis var. occidentalis
* Western Bitter Cress: Cardamine occidentalis ?
* Spring Whitlow-grass: Draba verna
* Fringe Pod: Thysanocarpus curvipes
* Shining Oregon Grape: Berberis aquifolium
* Bulblet Prairie Star: Lithophragma bulbifera (now included into Lithophragma glabrum)
* Smooth Prairie Star: Lithophragma glabrum
* Small-flowered Prairie Star: Lithophragma parviflorum
* Northwestern Saxifrage: Micranthes integrifolia
* Rusty-hair Saxifrage: Micranthes rufidula
* Merten's Saxifrage: Saxifraga mertensiana
* Fringe Cup: Tellima grandiflora
* Serviceberry: Amelanchier alnifolia
* Bicolored Lupine: Lupinus bicolor
* Common Broad-leaf Lupine: Lupinus latifolius x sericeus (formerly Lupinus latifolius var. thompsonianus)
* Small-flowered Lupine: Lupinus micranthus
* Big-head Clover: Trifolium macrocephalum
* Filaree: Erodium cicutarium
* Columbia Desert Parsley: Lomatium columbianum
* Butterfly-loving (Pungent) Desert Parsley: Lomatium papilioniferum
* Large-fruit Biscuitroot: Lomatium macrocarpum (yellow-flowered form)
* Bare-stem Desert Parsley: Lomatium nudicaule
* Nine-leaf Desert Parsley: Lomatium triternatum var. triternatum
* Poet's Shooting Star: Dodecatheon poeticum
* Baby Stars: Linanthus bicolor
* Midget Phlox: Microsteris gracilis
* Ball-head Waterleaf: Hydrophyllum capitatum var. thompsonii
* Woods Nemophila: Nemophila parviflora
* Meadow Nemophila: Nemophila pedunculata
* Varied-leaf Phacelia: Phacelia heterophylla var. virgata
* Fiddleneck: Amsinckia menziesii (formerly Amsinckia retrorsa)
* Puccoon: Lithospermum ruderale
* Popcorn Flower: Plagiobothrys species
* Henbit: Lamium
amplexicaule
* Harsh Paintbrush: Castilleja hispida
* Large-flowered Blue-eyed Mary: Collinsia grandiflora
* Small-flowered Blue-eyed Mary: Collinsia parviflora
* Common Monkey Flower: Erythranthe guttata
* Naked Broomrape: Aphyllon purpureum (former var. purpurea)
* Dwarf Owl-clover: Triphysaria pusilla
* Bedstraw: Galium aparine
* White Plectritis: Plectritis macrocera
* Big Root: Marah oreganus
* Northwestern Balsamroot: Balsamorhiza careyana x deltoidea
* Gold Stars: Crocidium multicaule
* False Agoseris: Nothocalais troximoides