Ponderosa Pine: Pinus ponderosa var. ponderosa
Douglas Fir: Pseudotsuga menziesii var. menziesii
* Big-leaf Maple: Acer macrophyllum
Oregon White Oak: Quercus garryana var. garryana - Pendant inflorescences in bud.
* Long-anther Wood Rush: Luzula macrantha
Taper-tip Onion: Allium acuminatum - In bud.
Green-banded Mariposa Lily: Calochortus macrocarpus var. macrocarpus - Basal leaves only.
* Common Camas: Camassia quamash (ssp. quamash ?) - Blooming in a field about 50 meters east of the canyon descent back to the rest area on Interstate 84.
Ookow, Ball-head Cluster Lily: Dichelostemma congestum - In bud.
Pale-anthered Glacier Lily: Erythronium grandiflorum var. pallidum
* Chocolate Lily: Fritillaria affinis
* Yellow Bells: Fritillaria pudica - Mostly out of bloom.
* False Solomon Seal: Maianthemum racemosum ssp. amplexicaule
* Bicolored Cluster Lily: Triteleia grandiflora ssp. howellii - Beginning to bloom.
* Panicled Death-camas: Toxicoscordion paniculatum
* Meadow Death-camas: Toxicoscordion venenosum var. venenosum
Grass Widows: Olsynium douglasii var. douglasii - Past bloom.
* Fairy Slipper: Calypso bulbosa
Long-spurred Rein Orchid: Platanthera elegans - (basal leaves only, so this could also be Platanthera unalascensis)
Common Bastard Toad-flax: Commandra umbellata var. californica
Heart-leaf Buckwheat: Eriogonum compositum var. compositum
Tall Buckwheat: Eriogonum elatum
Strict Buckwheat: Eriogonum strictum var. proliferum
Curly Dock: Rumex crispus - Some plants nearing bloom.
Small-flowered Miner's Lettuce: Claytonia parviflora
* Miner's Lettuce: Claytonia perfoliata
Water Chickweed: Montia fontana
* Line-leaf Montia: Montia linearis
Mouse-ear Chickweed: Cerastium glomeratum
Chickweed: Stellaria media
* Upland Larkspur: Delphinium nuttallianum
* Western Buttercup: Ranunculus occidentalis var. occidentalis
* Shining Oregon Grape: Berberis aquifolium
Dutchman's Breeches: Dicentra cucullaria
Bitter Wintercress: Barbarea vulgaris ? - Domestic wintercress growing in disturbed fields.
Oaks Toothwort: Cardamine nuttallii
* Western Bitter Cress: Cardamine occidentalis ?
* Spring Whitlow-grass: Draba verna - Mostly out of bloom.
* Fringe Pod: Thysanocarpus curvipes
Broad-leaf Stonecrop: Sedum spathulifolium - Getting ready to bloom
* 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
Violet Suksdorfia: Suksdorfia violacea
* Fringe Cup: Tellima grandiflora
Straggly Gooseberry: Ribes divaricatum ?
Mock Orange: Philadelphus lewisii
* Cusick's Serviceberry: Amelanchier alnifolia var. cusickii
Broad-petal Strawberry: Fragaria virginiana var. platypetala
Ocean Spray: Holodiscus discolor
Sticky Cinquefoil: Potentilla glandulosa var. glandulosa
Bitter Cherry: Prunus emarginata var. emarginata - Beginning to bloom.
Choke Cherry: Prunus virginiana var. melanocarpa - Racemes in bud.
Himalayan Blackberry: Rubus armeniacus
Blackcap: Rubus leucodermis
Thimbleberry: Rubus parviflorus
Trailing Blackberry: Rubus ursinus
Western Spiraea, Hardhack: Spiraea douglasii var. menziesii
Few-flowered Pea: Lathyrus pauciflorus var. pauciflorus
* 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
Common Vetch: Vicia sativa
Hairy Vetch: Vicia villosa
* Filaree: Erodium cicutarium
Dove's foot Geranium: Geranium molle
Poison Oak: Toxicodendron diversilobum
Deer Brush: Ceanothus integerrimus
Fireweed: Chamaenerion angustifolium
Chervil: Anthriscus caucalis
* Columbia Desert Parsley: Lomatium columbianum
* Biscuitroot: Lomatium macrocarpum (yellow-flowered form)
* Bare-stem Desert Parsley: Lomatium nudicaule
* Butterfly-loving (Pungent) Desert Parsley: Lomatium papilioniferum
* Nine-leaf Desert Parsley: Lomatium triternatum var. triternatum
Common Sweet Cicely: Osmorhiza berteroi
Western Snake Root: Sanicula crassicaulis
Creek Dogwood: Cornus sericea
* Poet's Shooting Star: Dodecatheon poeticum
Broad-leaf Shooting Star: Lysimachia latifolia
Columbia Frasera: Frasera albicaulis var. nitida (formerly var. columbiana) - In bud.
* Baby Stars: Linanthus bicolor
* Midget Phlox: Microsteris gracilis
* Ball-head Waterleaf: Hydrophyllum capitatum var. thompsonii
* Woods Nemophila: Nemophila parviflora
* Varied-leaf Phacelia: Phacelia heterophylla ssp. virgata
Tarweed Fiddleneck: Amsinckia lycopsoides
* Fiddleneck: Amsinckia menziesii (Formerly Amsinckia retrorsa)
* Puccoon: Lithospermum ruderale
Scouler's Popcorn Flower: Plagiobothrys scouleri
* Slender Popcorn Flower: Plagiobothrys tenellus
* Henbit: Lamium
amplexicaule
Narrow-leaf Owl-clover: Castilleja attenuata
* Harsh Paintbrush: Castilleja hispida
* Large-flowered Blue-eyed Mary: Collinsia grandiflora
* Small-flowered Blue-eyed Mary: Collinsia parviflora
Few-flowered Blue-eyed Mary: Collinsia sparsiflora var. bruceae
Common Monkey Flower: Erythranthe guttata
* Dwarf Owl-clover: Triphysaria pusilla
Cutleaf Penstemon: Penstemon richardsonii var. richardsonii
Small-flowered Tonella: Tonella tenella
Purslane Speedwell: Veronica peregrina var. xalapensis
Naked Broomrape: Aphyllon purpureum (former var. minuta)
* Naked Broomrape: Aphyllon purpureum (former var. purpurea)
* Bedstraw: Galium aparine
Orange Honeysuckle: Lonicera ciliosa
Blue Elderberry: Sambucus mexicana ssp. cerulea
Common Snowberry: Symphoricarpos albus var. laevigatus
Long-spurred Plectritis: Plectritis ciliosa
* White Plectritis: Plectritis macrocera
Corn Salad: Valerianella locusta
* Big Root: Marah oreganus
Yarrow: Achillea millefolium - In bud.
Annual Agoseris: Agoseris heterophylla
Spearleaf Agoseris: Agoseris retrorsa
Heartleaf Arnica: Arnica cordifolia
* Northwestern Balsamroot: Balsamorhiza careyana x deltoidea ?
Hairy Goldaster: Chrysopsis villosa
Columbia Goldenweed: Columbiadoria hallii
Western Hawksbeard: Crepis occidentalis
* Gold Stars: Crocidium multicaule
Scouler's Hawkweed: Hieracium scouleri (former var. cynoglossoides ?)
* False Agoseris: Nothocalais troximoides
Western Groundsel: Senecio integerrimus var. exaltatus
Common Dandylion: Taraxacum officinale