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Wildflowers of the Genus Achillea: The Yarrows
Yarrow: Achillea millefolium - The leaves are narrow, divided into numerous, very short, very dissect leaflets. The inflorescence is a flat-topped cluster. Individual flower heads have several white disk flowers surrounded by several broad, rounded white petals. The stems are covered with white, cottony hairs. It may have an unpleasant odor.
Wildflowers of the Genus Anthemis: The Chamomiles
Wildflowers of the Genus Arnica:
Meadow Arnica: Arnica chamissonis
Heartleaf Arnica: Arnica cordifolia
Rayless Arnica: Arnica discoidea - No ray flowers.
Sticky-leaf Arnica: Arnica diversifolia
Hillside Arnica: Arnica fulgens
Streambank Arnica: Arnica lanceolata ssp. prima
Mountain Arnica: Arnica latifolia
Hairy Arnica: Arnica mollis
Rydberg's Arnica: Arnica rydgergii
Foothills Arnica: Arnica sororia
Great Northern Aster: Canadanthus modestus
Klickitat Aster: Eucephalus glaucescens
Cascade Aster: Eucephalus ledophyllus var. ledophyllus
Rough-leaf Aster: Eurybia radulina
Alpine Aster: Oreostemma alpigenum var. alpigenum
Oregon White-top Aster: Sericocarpus oregonensis ssp. oregonensis
Rigid White-topped Aster: Sericocarpus rigidus
Long-leaved Aster: Symphyotrichum ascendens
Eaton's Aster: Symphyotrichum bracteolatum
Western Meadow Aster: Symphyotrichum campestre
Rayless Annual Aster: Symphyotrichum ciliatum
Tufted White Prairie Aster: Symphyotrichum ericoides var. pansum
Leafybract Aster: Symphotrichum foliaceum var. parryi
Alkali Aster: Symphyotrichum frondosum
Hall's Aster: Symphyotrichum hallii
English Aster: Symphyotrichum novae-angliae
Western Aster: Symphotrichum spathulatum var. intermedium
Western Aster: Symphyotrichum spathulatum var. spathulatum
Douglas' Aster: Symphotrichum subspicatum var. subspicatum
Wildflowers of the Genus Balsamorhiza: The Balsamroots
Carey's Balsamroot: Balsamorhiza careyana
Northwest Balsamroot: Balsamhoriza deltoidea
Hooker's Balsamroot: Balsamorhiza hookeri
Arrow-leaf Balsamroot: Balsamhoriza sagittata
Serrate Balsamroot: Balsamorhiza serrata
Wildflowers of the Genus Bidens: The Beggar Ticks
Nodding Beggar Ticks: Bidens cernua
Swamp Beggar-ticks: Bidens connata
Devil's Pitchfork: Bidens frondosa
Three-lobed Beggarticks: Bidens tripartita
Western Sticktight: Bidens vulgata
Wildflowers of the Genus Columbiadoria:
Columbia River Daisy, Hall's Columbiadoria, Hall's Goldenweed: Columbiadoria hallii (Synonyms: Haplopappus hallii, Hesperodoria hallii)
Wildflowers of the Genus Conyza:
Horseweed, Canada Fleabane, Canadian Fleabane: Conyza canadensis - This species may have very short, white rays or may essentially be rayless.
Wildflowers of the Genus Coreopsis:
Calliopsis, Columbia Coreopsis, Golden Tickseed: Coreopsis tinctoria)var. atkinsoniana (Synonyms: Coreopsis atkinsoniana, Coreopsis tinctoria var. tinctoria) - Erect wildflowers to 2-3 feet tall. Flowers broad, showy, with yellow ray flowers that may be orangish at base. Leaves pinnatifid or bipinnatifid, linear. Flowers, stems, and leaves are hairless.
Wildflowers of the Genus Crocidium: The Gold Stars
Gold Stars/ Spring Gold: Crocidium multicaule - Low growing wildflowers to 8 inches tall. Small dime-sized flower heads with yellow central disks and 8-13 yellow ray flowers. Spatulate basal leaves with alternate, thin stem leaves with scattered tufts of woolly hairs.
Wildflowers of the Genus Dieteria:
Hoary Aster: Dieteria canescens var. canescens (Synonyms: Aster danescens, Aster shastensis var. glossophyllus, Aster shastensis var. latifolius)
Hoary Aster, Tall Hoary Aster: Dieteria canescens var. incana
Wildflowers of the Genus Erigeron: The Fleabanes or Daisies
Bitter Fleabane: Erigeron acris var. kamtschaticus
Annual Fleabane: Erigeron annuus
Cut-leaved Daisy: Erigeron compositus
Spreading Fleabane: Erigeron divergens
Thread-leaf Fleabane: Erigeron filifolius
Foreign Daisy: Erigeron glacialis var. glacialis
Howell's Daisy: Erigeron howellii
Unadorned Fleabane: Erigeron inornatus var. inornatus - Rayless.
Yellow Desert Daisy: Erigeron linearis
Columbia Gorge Daisy: Erigeron oreganus
Pink Fleabane: Erigeron philadelphicus
Cushion Fleabane: Erigeron poliospermus var. poliospermus
Showy Fleabane: Erigeron speciosus
Branching Daisy: Erigeron strigosus
Wildflowers of the Genus Eriophyllum: The Woolly Sunflowers
Oregon Sunshine/ Woolly Sunflower: Eriophyllum lanatum - Numerous flower heads, each with a dime-sized yellow central disk surrounded by 8-14 yellow ray flowers. The upper stem leaves are linear, but the lower leaves are pinnately dissected. The leaves and stems are covered with gray, woolly hairs. A common plant of drier, often rocky slopes.
Wildflowers of the Genus Euthamia: Goldenrod
Western Goldenrod: Euthamia occidentalis
Wildflowers of the Genus Gaillardia: The Blanket Flowers
Blanket Flower, Common Gaillardia, Great-flowered Gaillardia: Gaillardia aristata - Large flower heads with about 10 yellow, staghorn or 3-forked rays surrounding a red dome of disk flowers. Leaves linear with short pairs of projecting lobes. 1-2 feet tall.
Wildflowers of the Genus Grindelia: The Gumweeds
Columbia Gumplant, Columbia Gumweed: Grindelia nana var. discoidea - Generally lacking ray flowers.
Idaho Gumweed, Low Gumweed: Grindelia nana var. nana (Synonyms: Grindelia hirsutula, Grindelia nana var. integerrima, Grindelia nana var. integrifolia, Grindelia nana ssp. nana, Grindelia squarrosa var. integrifolia ): Smooth-leaved and -stemmed perennial to 80 cm in height. Flower-heads with yellow rays and disk flowers. Plant is not very resinous. Involucral bracts with reflexed, almost hook-like tips. A plant of dry open places.
Wildflowers of the Genus Gutierrezia: Matchbrush
Matchbrush: Gutierrezia sarothrae
Wildflowers of the Genus Helenium: The Sneezeweeds
Common Sneezeweed, Large-flowered Sneezeweed, Mountain Sneezeweed, Sneezeweed: Helenium autumnale (Synonyms: Helenium autumnale var. autumnale, Helenium autumnale var. grandiflorum, Helenium autumnale var. montanum)
Wildflowers of the Genus Helianthella:
Little Sunflower: Helianthella uniflora
Wildflowers of the Genus Helianthus: The Sunflowers
Common Sunflower: Helianthus annuus
Cusick's Sunflower: Helianthus cusickii
Prairie Sunflower: Helianthus petiolaris
Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima
Wildflowers of the Genus Heterotheca: Goldasters and Goldenasters - An upright to sprawling plant of sandy areas. Sometimes weedy. The leaves and stems are abundantly hairy. The flower heads are like yellow daisies.
Leafy Goldenaster: Heterotheca villosa var. foliosa (Synonym: Chrysopsis villosa var. foliosa) - Note: In Oregon, this is lumped into Heterotheca villosa var. villosa
Hairy Goldenaster, Hispid Goldenaster: Heterotheca villosa var. minor (Synonyms: Chrysopsis villosa var. hispida, Chrysopsis villosa var. viscida, Heterotheca villosa var. hispida)
Hairy False Goldaster, Hairy Goldaster, Hairy Goldenaster, Leafy Goldenaster: Heterotheca villosa var. villosa (Synonyms: Chrysopsis villosa var. foliosa, Chrysopsis villosa var. villosa, Heterotheca villosa var. foliosa)
Wildflowers of the Genus Lagophylla:
Rabbit Leaf: Lagophylla ramosissima
Wildflowers of the Genus Layia: The Tidy-tips
Whitedaisy Tidytips, White Daisy Tidytips, White Layia: Layia glandulosa (Synonyms: Layia glandulosa ssp. glandulosa, Layia glandulosa ssp. lutea) - Flower heads with white, antler or 3-forked rays, and a globose, yellow central disk. Leaves linear to lobed.
Coastal Tidytips: Layia platyglossa
Wildflowers of the Genus Leucanthemum:
Oxeye Daisy, Ox-eye Daisy: Synonyms: Leucanthemum vulgare (Synonyms: Chrysanthemum leucanthemum, Chrysanthemum leucanthemum var. pinnatifidum) - An erect plant with stout stems. The leaves are pinnatifid. The large, showy flower heads are at the apex of the stems, with long white rays surrounding a broad yellow disk.
Feverfew: Chrysanthemum parthenium
Wildflowers of the Genus Madia: The Tarweeds
Small-head Tarweed: Hemizonella minima
Lemon-scented Tarweed: Madia citriodora
Little Tarweed: Madia exigua
Stinking Tarweed: Madia glomerata
Common Tarweed: Madia gracilis
Coast Tarweed: Madia sativa
Wildflowers of the Genus Nestotus: Goldenweeds
Narrowleaf Goldenweed, Narrowleaf Mock Goldenweed: Nestotus stenophyllus (Synonyms: Haplopappus stenophyllus, Stenotus stenophyllus)
Wildflowers of the Genus Rigiopappus: Bristleheads or Wireweeds
Bristlehead, Bristle Head, Wireweed: Rigiopappus leptocladus
Wildflowers of the Genus Senecio: The Butterweeds and Groundsels
Bolander's Butterweed: Packera bolanderi var. harfordii
Streambank Butterweed: Packera pseudaurea var. pseudaurea
Alpine Meadow Groundsel: Packera streptanthifolia
Sweet Marsh Groundsel: Senecio hydrophiloides
Great Swamp Groundsel: Senecio hydrophilus
Western Groundsel: Senecio integerrimus var. exaltatus
White Western Groundsel: Senecio integerrimus var. ochroleucus
Tansy Ragwort: Senecio jacobaea
Tall Ragwort: Senecio serra var. serra
Woods Groundsel: Senecio sylvaticus
Arrow-leaf Groundsel: Senecio triangularis
Common Butterweed: Senecio vulgaris - Flowers all discoid.
Wildflowers of the Genus Solidago: The Goldenrods
Western Goldenrod: Euthamia occidentalis
West Coast Goldenrod: Solidago elongata
Giant Goldenrod, Late Goldenrod: Solidago gigantea
Meadow Goldenrod, Canada Goldenrod: Solidago lepida var. salebrosa
Missouri Goldenrod: Solidago missouriensis
Little Goldenrod, Sticky Goldenrod: Solidago simplex var. simplex (S. spathulata var. neomexicana)
Wildflowers of the Genus Tanacetum:
Featherfew, Feather-few, Feverfew, Fever-few: Tanacetum parthenium (Synonym: Chrysanthemum parthenium)
Wildflowers of the Genus Wyethia: The Mule's Ears
Northern Wyethia/ Mule's Ears: Wyethia amplexicaulis
Narrow-leaf Mule's-ears: Wyethia angustifolia