Malheur Experiment Station

Plants by Weed, Scientific Name

Weed: Can be

Amsinckia intermedia Common Names fiddleneck Family Borage Flower Color Yellow or Purple Plant Type Herb Short Description Hay containing fiddleneck is poisonous to livestock Weed Can be

Asclepias speciosa Common Names showy milkweed Family Milkweed Flower Color Pink, purple Plant Type Herb Location Hoover Road, Mann Creek, ID Native Yes, Yes Weed Can be

Cichorium intybus Common Names chicory Family Composites, Sunflower Flower Color Blue Plant Type Herb Location McCall, ID Native No Weed Can be

Cleome lutea Common Names yellow beeplant, yellow spiderflower Family Caper Flower Color Yellow Plant Type Herb Location Lower Owyhee River, OR Native Yes Weed Can be

Cleome serrulata Common Names rocky mountain beeplant Family Caper Flower Color Purple Plant Type Herb Location Malheur River Plain, west of Vale, OR Native Yes Weed Can be

Echinocystis lobata Common Names wild cucumber Family Cucurbit Flower Color Cream white Plant Type Vine Native Yes Weed Can be

Grindelia squarrosa Common Names curlycup gumweed Family Composites, Sunflower Flower Color Yellow Plant Type Herb Native Yes Weed Can be

Helianthus annuus Common Names sunflower Family Composites, Sunflower Flower Color Yellow Plant Type Herb Native Yes Weed Can be

Iris pseudacorus Common Names yellow flag Family Iris Flower Color Yellow Plant Type Forb Short Description Introduced plant, conspicuous along edges of ponds, irrigation canals. Native No Weed Can be

Iva axillaris Common Names poverty sumpweed Family Composites, Sunflower Plant Type Forb Native Yes Weed Can be

Rumex acetosella Common Names sheep sorrel Family Buckwheat Flower Color Pink, Yellow, Creamy White Plant Type Herb Location McCall, ID Weed Can be

Solidago canadensis Common Names Canada goldenrod Family Composites, Sunflower Flower Color Yellow Plant Type Herb Location McCall, ID Native Yes Weed Can be

Toxicodendron rydbergii Common Names poison ivy Family Sumac Plant Type Shrub Native Yes Weed Can be

Verbascum thapsus Common Names common mullein Family Figwort or Snapdragon Flower Color Yellow Plant Type Herb Location McCall, ID Native No Weed Can be

Weed: No

Abies grandis Common Names grand fir Family Pine Plant Type Tree Short Description Intergrades with white fir. Leaves: Needles, singular Location McCall, ID Native Yes Weed No

Abies lasiocarpa Common Names subalpine fir Family Pine Plant Type Tree Native Yes Weed No

Abutilon theophrasti Common Names velvetleaf Family Mallow Flower Color Yellow Plant Type Shrub Introduced Yes Weed No

Acer glabrum Common Names Rocky Mountain maple Family Maple Flower Color Green-yellow Plant Type Tree Location Mann Creek, ID, McCall, ID Native Yes Weed No

Acer negundo Common Names box elder Family Maple Flower Color Bright green Plant Type Tree Short Description Medium sized tree Weed No

Achillea millefolium Common Names yarrow Family Composites, Sunflower Flower Color White Plant Type Herb Location McCall, ID Native Yes Weed No

Aconitum columbianum Common Names Monk's Hood Family Buttercup Flower Color Purple Plant Type Herb Short Description 1.5 to 7 feet tall. Location McCall, ID Native Yes Weed No

Adenocaulon bicolor Common Names pathfinder, trail plant Family Composites, Sunflower Flower Color Green, mixed Plant Type Forb Location McCall, ID Native Yes Weed No

Agoseris glauca Common Names short-beaked agroseris, false dandelion, pale agoseris Family Composites, Sunflower Flower Color Yellow Plant Type Herb Elevation 2400' Location Mann Creek, ID Native Yes Weed No

Aguilegia sp. Common Names Columbine Family Buttercup Flower Color White, yellow Plant Type Forb Weed No

Allium acuinatum Common Names tapertip onion, taper-tip onion Family Lily Flower Color Purple Location Council, ID Native Yes Weed No

Allium douglasii Common Names Douglas wild onion Family Lily Flower Color Pink Native Yes Weed No

Alnus sinuata Common Names Sitka alder Family Birch Flower Color -catkins- Plant Type Tree Native Yes Weed No

Amelanchier alnifolia Common Names serviceberry Family Rose Flower Color White Plant Type Shrub Short Description 5 petals. Location Lookout Mountain, OR, Mann Creek, ID, McCall, ID, Twin Springs, OR Native Yes Weed No

Anaphalis margaritacea Common Names pearly everlasting Family Composites, Sunflower Flower Color White Plant Type Herb Location McCall, ID Native Yes Weed No

Anemone piperi Common Names Piper's anemone, windflower Family Buttercup Flower Color White Plant Type Herb Location Council, ID, McCall, ID Native Yes Weed No

Antennaria anaphaloides Common Names pearly pussytoes Family Composites, Sunflower Flower Color White, yellow Plant Type Herb Location McCall, ID Native Yes Weed No

Aquilegia formosa Common Names rocky mountain red columbine Family Buttercup Flower Color Red Plant Type Herb Native Yes Weed No

Aristida purpurea Common Names purple threeawn grass Family Grass Flower Color Purple, Green Plant Type Grass Native Yes Weed No

Arnica cordifolia Common Names heart-leafed arnica Family Composites, Sunflower Flower Color Yellow Plant Type Herb Short Description Leaves: Heart shaped Location McCall, ID Native Yes Weed No

Artemisia ludoviciana ssp. ludoviciana Common Names white sagebrush Family Composites, Sunflower Location Snake River Native Yes Weed No

Artemisia tridentata Common Names big sage, sagebrush, big sagebrush Family Composites, Sunflower Flower Color Yellow Plant Type Shrub Location McCall, ID Native Yes Watershed Malheur, Owyhee, Snake, Weiser Weed No

Aster alpigenus var. haydenii Common Names showy aster, alpine aster, mountain aster Family Composites, Sunflower Flower Color Purple Plant Type Herb Location McCall, ID Native Yes Weed No

Astragalus curvicarpus Common Names curvepod milkvetch, sickle milkvetch Family Legume or Pea Flower Color Yellow Plant Type Herb Location Along the Snake River between Anex and Farewell Bend, OR Native Yes Weed No

Astragalus mulfordiae Common Names Mulford's milkvetch Family Legume or Pea Flower Color Purple, white Plant Type Herb Native Yes Weed No

Balsamorhiza hookeri Common Names Hooker's balsamroot Family Composites, Sunflower Flower Color Yellow Plant Type Herb Elevation 2400', 3300' Location Mann Creek, ID, Midvale Hill between Mann Creek and Midvale, ID Native Yes Weed No

Balsamorhiza sagittata Common Names arrowleaf balsamroot Family Composites, Sunflower Flower Color Yellow Plant Type Herb Elevation 2500' Location Council, ID, Mann Creek, ID, McCall, ID Native Yes Weed No

Bassia prostrata Common Names forage kochia Family Goosefoot Flower Color Green, Red Introduced Yes Weed No

Betula occidentalis Common Names western birch Family Birch Plant Type Tree Weed No

Brodiaea douglasii Common Names brodiaea, Douglas' brodiaea, wild hyacinth Family Lily Flower Color Purple, blue Location Council, ID, Mann Creek, ID Native Yes Weed No

Calochortus eurycarpus Common Names wide-fruit mariposa lily Family Lily Flower Color White-pale pink Native Yes Weed No

Calochortus nuttallii Common Names sego lily Family Lily Flower Color White Plant Type Forb Native Yes Weed No

Calypso bulbosa Common Names calypso orchid, fairy slipper Family Orchid Flower Color Pink, purple Plant Type Forb Location McCall, ID Native Yes Weed No

Camassia quamash Common Names camas, black camas, camas lily Family Lily Flower Color Blue Location Council, ID, Mann Creek, ID, Mann Creek Res. ID, McCall, ID Native Yes Weed No

Camissonia claviformus Common Names club fruit Family Evening Primrose Flower Color Yellow Plant Type Herb Native Yes Weed No

Cassiope mertensiana Common Names white mountain heather Family Heath Flower Color White Plant Type Shrub Short Description small, white, bell-like flowers Native Yes Weed No

Castilleja cusickii Common Names Cusick's Indian paintbrush Family Figwort or Snapdragon Flower Color Yellow Plant Type Herb Native Yes Weed No

Castilleja miniata Common Names Indian Paintbrush Family Figwort or Snapdragon Flower Color Orange, faded Plant Type Herb Short Description Rare in camp. Location McCall, ID Native Yes Weed No

Ceanothus velutinus Common Names buckbrush, snowbush Family Buckthorn Flower Color White Plant Type Shrub Short Description Leaves persistent, N fixing genus. Leaves: Shiny upper side Elevation 4150' Location Jenkins Rd. north of Weiser ID, McCall, ID Native Yes Weed No

Centaurea diffusa Common Names diffuse knapweed Family Composites, Sunflower Flower Color Light Pink Plant Type Forb Native No Weed No

Chimaphila umbellata Common Names Prince's-Pine Family Heath Flower Color Pink, rose Plant Type Shrub Short Description Very short shrubby perenial. Location McCall, ID Native Yes Weed No

Chrysothamnus nauseosus Common Names gray rabbitbrush, rubber rabbitbrush Family Composites, Sunflower Flower Color Yellow Plant Type Shrub Location McCall, ID Native Yes Weed No

Clarkia pulchella Common Names pinkfairies, pink fairies, deer horn, ragged robin, elkhorn clarkia Family Evening Primrose Flower Color Pink, purple Plant Type Herb Elevation 2900' Location Jenkins Rd. north of Weiser ID Native Yes Weed No

Claytonia lanceolata Common Names spring beauty Family Purslane Flower Color White to pink Plant Type Herb Native Yes Weed No

Clematis columbiana Common Names blue clematis Family Buttercup Flower Color Blue Plant Type Vine Location McCall, ID Native Yes Weed No

Clematis ligusticifolia Common Names virgin's bower, western clematis Family Buttercup Flower Color White, yellow Plant Type Vine Native Yes Weed No

Clintonia uniflora Common Names Clintonia, Queen's Cup Family Lily Flower Color Waxy white Plant Type Forb Short Description Short perennial, usually has single flowers. Location McCall, ID Native Yes Weed No

Collinsia parviflora Common Names blue-eyed Mary Family Figwort or Snapdragon Flower Color Blue and white Plant Type Herb Short Description Very small plant, flowers. Elevation 3300' Location Council, ID, McCall, ID, Midvale Hill between Mann Creek and Midvale, ID Native Yes Weed No

Collomia linearis Common Names narrow-leaf collomia, tiny trumpet Family Phlox Flower Color light purple Plant Type Forb Elevation 4150' Location Jenkins Rd. north of Weiser ID Native Yes Weed No

Corallorhiza maculata Common Names spotted coral-root Family Orchid Flower Color Brown, red, white Short Description Saprophyte, forest floor. Leaves: No green leaves Location McCall, ID Native Yes Weed No

Corallorhiza trifida Common Names early coral-root Family Orchid Flower Color Yellowish Short Description Saprophyte, forest floor. Leaves: No green leaves Location McCall, ID Native Yes Weed No

Cornus stolonifera Common Names red-osier dogwood Family Dogwood Flower Color White Plant Type Shrub Short Description Red branched shrub. Location McCall, ID Native Yes Weed No

Cryptantha glomerata Common Names cryptantha Family Borage Flower Color White Plant Type Herb Native Yes Weed No

Cypripedium montanum Common Names mountain lady's slipper Family Orchid Flower Color Brown and White Plant Type Forb Native Yes Weed No

Dalea ornata Common Names Blue Mountain prairie clover, Western prairie clover Family Legume or Pea Flower Color Pink, purple Plant Type Herb Native Yes Weed No

Delphinium bicolor Common Names blue larkspur, little larkspur, bicolor larkspur Family Buttercup Flower Color Blue Plant Type Herb Elevation 3300' Location Crowley, OR, Mann Creek, ID, Midvale Hill between Mann Creek and Midvale, ID Native Yes Weed No

Dicentra uniflora Common Names steer's head Family Bleeding Heart Flower Color White Plant Type Herb Native Yes Weed No

Dodecatheon jeffreyi Common Names Jeffrey's shooting star Family Primrose Flower Color Pink, purple Plant Type Herb Native Yes Weed No

Dodecatheon pulchellum Common Names shootingstar Family Primrose Flower Color Purple Plant Type Herb Native Yes Weed No

Downiniga elegans Common Names showy downiniga Family Harebell Flower Color Purple Plant Type Herb Native Yes Weed No

Epilobium angustifolium Common Names fireweed Family Evening Primrose Flower Color Purple Plant Type Herb Location McCall, ID Native Yes Weed No

Equisetum arvense Common Names horsetail Family Horsetail Flower Color -none- Plant Type Forb Location McCall, ID Native Yes Weed No

Erigeron concinnus var. aphanactis Common Names basin rayless daisy, rayless fleabane, rayless shaggy fleabane Family Composites, Sunflower Flower Color Yellow Plant Type Herb Native Yes Weed No

Erigeron divergens Common Names Wooly Daisy Family Composites, Sunflower Flower Color Pale lavender Plant Type Herb Native Yes Weed No

Eriogonum flavum Common Names yellow buckwheat Family Buckwheat Flower Color Yellow, red Plant Type Shrub Native Yes Weed No

Eriogonum ovalifolium Common Names cushion buckwheat, oval-leafed eriogonum Family Buckwheat Flower Color Cream white Plant Type Shrub Native Yes Weed No

Eriogonum strictum Common Names strict buckwheat, blue mountain buckwheat Family Buckwheat Flower Color White-pale pink Plant Type Shrub Short Description Very low growing. Location Jordan Valley. ID Native Yes Weed No

Eriophyllum lanatum Common Names Oregon sunshine, wooly sunflower Family Composites, Sunflower Flower Color Yellow Plant Type Herb Native Yes Weed No

Erodium cicutarium Common Names storksbill, filaree Family Geranium Flower Color Pink, purple Plant Type Herb Short Description Leaves: Pinnate-pinnatifid. Native of Europe or Asia. Location McCall, ID Native No Weed No

Erythronium grandiflorum Common Names glacier lily Family Lily Flower Color Yellow Plant Type Forb Native Yes Weed No

Fragaria vesca Common Names wild strawberry Family Rose Flower Color White Plant Type Herb Location Council, ID, McCall, ID Native Yes Weed No

Frasera montana Common Names white frasera Family Gentian Flower Color White, cream Plant Type Herb Short Description Small perrenial. Location McCall, ID Native Yes Weed No

Fritillaria pudica Common Names yellowbell, yellow bell, yellow fritillary Family Lily Flower Color Yellow Plant Type Forb Location Lower Owyhee River, OR Native Yes Weed No

Gaillardia pinnatifida Common Names blanket flower Family Composites, Sunflower Flower Color Yellow, red Plant Type Herb Native Yes Weed No

Gentiana acuta Common Names explorer's bog gentian, northern gentian Family Gentian Flower Color Purple, blue Plant Type Herb Native Yes Weed No

Geranium viscosissimum Common Names sticky geranium, sticky purple geranium Family Geranium Flower Color Pink, purple Plant Type Herb Short Description Leaves: Palmately divided Elevation 4725' Location Jenkins Rd. north of Weiser ID, McCall, ID Native Yes Weed No

Goodyera oblongifolia Common Names rattlesnake plantain Family Orchid Flower Color -dull- Plant Type Forb Short Description Forest floor. Leaves: White stripe on midrib Location McCall, ID Native Yes Weed No

Grayia spinosa Common Names spiny hopsage Family Goosefoot Flower Color Pink, Yellow, Creamy White Plant Type Shrub Location Along the Snake River between Anex and Farewell Bend, OR, Reinhart Butte, Vale OR Native Yes Weed No

Habenaria dilatata Common Names bog orchid Family Orchid Flower Color White Plant Type Forb Short Description Thin spikelike raceme of flowers. Location McCall, ID Native Yes Weed No

Helianthella uniflora Common Names oneflower helianthella, rocky mountain helianthella, rocky mountain little sunflower Family Composites, Sunflower Flower Color Brilliant Yellow Plant Type Forb Native Yes Weed No

Heracleum lanatum Common Names cow parsnip Family Parsley Flower Color White Plant Type Herb Short Description Photosensitive skin reaction, wet soil. Is poisonous to humans. Location McCall, ID Native Yes Weed No

Hydrophyllum capitatum Common Names dwarf waterleaf, ballhead waterleaf, leather breeches Family Waterleaf Flower Color Pink, purple Plant Type Herb Elevation 2500' Location Mann Creek, ID Native Yes Weed No

Ipomopsis aggregata var. aggregata Common Names scarlet gilia, skyrocket Family Phlox Flower Color Red Plant Type Herb Location McCall, ID Native Yes Weed No

Kalmia microphylla Common Names alpine laurel, swamp laurel Family Heath Flower Color Pink, purple Plant Type Shrub Native Yes Weed No

Lappula velutina Common Names stickseed, wild forget-me-not Family Borage Flower Color Blue Plant Type Herb Native Yes Weed No

Larix occidentalis Common Names western larch Family Pine Plant Type Tree Location McCall, ID Native Yes Weed No

Lathyrus pauciflorus Common Names few-flowered peavine, fewflower pea Family Legume or Pea Flower Color Purple Plant Type Vine Elevation 3800' Location Jenkins Rd. north of Weiser ID, Mann Creek, ID Native Yes Weed No

Lathyrus rigidus Common Names bushy peavine Family Legume or Pea Flower Color White Plant Type Vine Native Yes Weed No

Ledum groenlandicum Common Names labrador tea Family Heath Flower Color White Plant Type Shrub Native Yes Weed No

Lesquerella douglasii Common Names bladder pod Family Mustard Flower Color Yellow Plant Type Herb Native Yes Weed No

Lewisia rediviva Common Names Bitterroot Family Purslane Flower Color White/Purple Plant Type Herb Location Council, ID Native Yes Weed No

Linnaea borealis Common Names twinflower Family Honeysuckle Flower Color Pink Plant Type Shrub Short Description A very small shrub like vine that grows as an understory in pine forests, 4 in tall, hugs soil or rock surface. Location McCall, ID Native Yes Weed No

Lithophragma heterophylla Common Names prairie star, woodland star Family Saxifrage Flower Color White Plant Type Herb Native Yes Weed No

Lithospermum ruderale Common Names puccoon, wayside gromwell Family Borage Flower Color Yellowish Plant Type Herb Location Mann Creek, ID, McCall, ID, Road to Lookout Mountain, OR Native Yes Weed No

Lomatium dissectum Common Names fern-leafed lomatium, fern-leafed desert parsley, fernleaf biscuitroot, desert parsley Family Parsley Plant Type Forb Elevation 2500' Location Mann Creek, ID Native Yes Weed No

Lomatium nudicaule Common Names barestem lomatium, barestem desert parsley, barestem biscuitroot Family Parsley Flower Color Yellowish Plant Type Herb Elevation 2400' Location Mann Creek, ID Native Yes Weed No

Lomatium triternatum Common Names nine-leaved desert parsley Family Parsley Flower Color Yellow Plant Type Herb Native Yes Weed No

Lonicera involucrata Common Names black twinberry Family Honeysuckle Flower Color Pale yellow Plant Type Shrub Location McCall, ID Native Yes Weed No

Lonicera utahensis Common Names red twinberry, Utah honeysuckle Family Honeysuckle Flower Color Pale Yellow or Red Plant Type Shrub Location McCall, ID Native Yes Weed No

Lotus corniculatus Common Names bird's-foot trefoil Family Legume or Pea Flower Color Brilliant Yellow Location Annex, OR Native No Weed No

Lupinus arbustus Common Names spur lupine Family Legume or Pea Flower Color Yellow, white, purple Plant Type Shrub Native Yes Weed No

Lupinus caudatus Common Names kellogg spurred lupine Family Legume or Pea Flower Color White-pale pink Plant Type Herb Native Yes Weed No

Lupinus sp. Common Names bluebonnet, lupine Family Legume or Pea Flower Color Blue Plant Type Herb Short Description Leaves: Palmate compound Location McCall, ID Native Yes Weed No

Lysichitum americanum Common Names skunk cabbage Family Calla-lily Flower Color Yellow Plant Type Herb Native Yes Weed No

Machaeranthera canescens Common Names tall purple aster, hoary aster, hoary tansyaster Family Composites, Sunflower Flower Color Purple Plant Type Herb Native Yes Weed No

Mahonia repens Common Names Oregon grape, creeping Oregon grape Family Barberry Flower Color Yellow Plant Type Shrub Short Description Grape-like berries. Leaves: Prickly toothed leaflets Location Mann Creek, ID, McCall, ID Native Yes Weed No

Mentzelia laevicaulis Common Names blazing star, smoothstem blazingstar Family Blazing Star Flower Color Yellow Plant Type Herb Native Yes Weed No

Mertensia longfloria Common Names long-flowered bluebell Family Borage Flower Color Blue Plant Type Herb Native Yes Weed No

Mertensia platyphylla Common Names broad-leaf bluebells Family Borage Flower Color Blue Plant Type Herb Location Council, ID, McCall, ID Native Yes Weed No

Mimulus cusickii Common Names Cusick's monkeyflower Family Figwort or Snapdragon Flower Color Magenta Plant Type Herb Native Yes Weed No

Mimulus lewisii Common Names Lewis' monkeyflower Family Figwort or Snapdragon Flower Color Magenta Plant Type Herb Location McCall, ID Native Yes Weed No

Mimulus nanus Common Names dwarf purple monkeyflower Family Figwort or Snapdragon Flower Color Pink, purple Plant Type Herb Native Yes Weed No

Mimulus primuloides Common Names little yellow monkeyflower Family Figwort or Snapdragon Flower Color Yellow Plant Type Herb Native Yes Weed No

Moehringia macrophylla Common Names bigleaf sandwort, franklin's sandwort Family Pink Flower Color White Plant Type Herb Short Description previously known as Arenaria macrophylla Native Yes Weed No

Monardella odoratissima Common Names monardella Family Mint Flower Color light purple Plant Type Shrub Native Yes Weed No

Nuphar polysepala Common Names yellow water lily, indian pond lily Family Water Lily Flower Color Yellow Plant Type Herb Native Yes Weed No

Oenothera tanacetifolia Common Names tansey-leaf evening primrose Family Evening Primrose Flower Color Yellow Plant Type Herb Native Yes Weed No

Opulaster malvaceus Common Names ninebark Family Rose Flower Color White Plant Type Shrub Location McCall, ID Native Yes Weed No

Osmorhiza chilenis Common Names sweet cicely Family Parsley Flower Color White Plant Type Herb Native Yes Weed No

Paeonia brownii Common Names wild peony Family Buttercup Flower Color Brown-reddish Plant Type Herb Short Description Compact near ground. Leaves: Deeply lobed, leathery Location Council, ID, Mann Creek, ID, McCall, ID Native Yes Weed No

Pedicularis groenlandica Common Names elephanthead Family Figwort or Snapdragon Flower Color Pink, purple Plant Type Herb Native Yes Weed No

Penstemon acuminatus Common Names sanddune penstemon, sandhill penstemon, sharpleaf penstemon, sand penstemon Family Figwort or Snapdragon Flower Color Purple, blue Plant Type Herb Location Malheur Co., OR Native Yes Weed No

Penstemon cusickii Common Names Cusick's penstemon, Cusick's beardtongue Family Figwort or Snapdragon Flower Color blue - purple Location Along the Snake River between Anex and Farewell Bend, OR Native Yes Weed No

Penstemon deustus Common Names hot-rock penstemon Family Figwort or Snapdragon Flower Color White Plant Type Herb Location Council, ID Native Yes Weed No

Penstemon glandulosus Common Names glandular penstemon, stickystem penstemon Family Figwort or Snapdragon Flower Color light purple Elevation 3800' Location Jenkins Rd. north of Weiser ID Native Yes Weed No

Penstemon palmeri Common Names Palmer's penstemon Family Figwort or Snapdragon Flower Color White-pale pink Plant Type Herb Native No Weed No