An Online Flora of Polk County, Oregon: Index

About the Project (information about all the native species in the Polk County) Interactive Keys The Polk County Flora Online Database Distribution Maps (generated using ArcGIS) Frequently Asked Questions(FAQs) Links to other Cool Plant Sites Onsite Tours WOU Project Team Acknowledgements

Click on the appropriate letter to navigate the index more quickly a b c d e f g h i jk l m n o p q r s t u v w x y z A Abies amabilis Abies concolor Abies grandis Abies pinsapo Abies procera Acer circinatum Acer glabrum var. prush Acer platanoides Acer rubrum Achillea millefolium Achlys Triphylla Adenocaulon bicolor Adianthum pedatum Agroseris sp. Albizia julibrissin Allium crenulatum Alnus rubra Amelanchier alnifolia Amelanchier alnifolia var. semi-intergrifolia Anaphalis margaritacea Anemone deltoidea Anenome lyallii Anenome oregana Anthemis arvensis Anthemis cotula Anthriscus scandicina Apocynum androsaemifolium Apocynum sp. Aquilegia formosa Arbutus menziesii Arbutus menziesii Arctium minus Arctostaphylos columbiana Arenaria macrophylla Arnica amplexicaulis Artemisia vulgaris Aruncus sylvester Asarum caudatum Athyrium Filix-femina Azolla filiculoides B Bambusa sp. Bellis perennis Berberis aquifolium Berberis nervosa Betula pendula Blechnum spicant Boykinia elata Brodiaea sp. Bromus sp. Buxus sempervirens C Callitriche sp. Callitriche hermaphroditica Calocedrus decurrens Calochortus tolmiei Calypso bulbosa Camellia japonica Camassia leichtlinii Campanula scouleri Cardamine angulatav Cardamine breweri Cardamine oligosperma Cardamine pennsylvanica Cardamine pulcherrima Carex hendersonii Carex obnupta Carex sp. Castanea sp. Castanopsis chrysophylla Castilleja sp Castilleja hispida Catalpa sp. Ceanothus sanguineus Centaurea cyanus Centarium umbellatum Cedrus deodara Cerastium arvense Cercis canadensis Chamaecyparis lawsoniana Chamaecyparis I. Elwoodii Chimaphila sp. Chrysanthemum leucanthemum Chrysosplenium glechomaefolium Cicuta douglasii Circaea alpina Circaea sp. Cirsium arvense Cirsium sp. Cirsium vulgare Clintonia uniflora Collinsia grandiflora Collinsia parviflora Collomia sp. Conium maculatum Convolvulus arvensis Convolvulus sepium Corallorhiza maculata Corallorhiza striata Cornus nuttallii Cornus stolonifera Cornus occidentalis var. stolonifera Corylus cornuta var. californica Cotinus coggygria Crataegus douglasii Crataegus sp. Crepis sp. Cryptantha sp. Cryptomeria japonica Cunninghamia lanceolata Cynoglossum grande Cystopteris sp. Cytisus scoparius D Dactylis glomerata Daucus carota Delphinium menziesii Dennstaidtia punctilobula Dentaria tenella Dicentra formosa Digitalis purpurea Dipsacus sylvestris Disporum hookeri Disporum hookeri ssp.oreganum Disporum smithii Dodecatheon hendersonii Dodecatheon pulchellum var. pulchellum Dwningia elegans Dryopteris austriaca E Epilobium angustifolium Epilobium minutum Equisetium telmateia Eriogonum compositum Eriogonum nudum Eriogonum pyrollifolium Eriophyllum lanatum var. lanatum Erodium cicutarium Erysium asperum Erythronium oregonum Escallonia sp. Euonymus alatus Euphorbia lathyrus F Festuca rubra Filipendula occidentalis Forsythia sp. Fragaria bracteata Fragaria vesca var. bracteata Fragaria vesca var. crinita Fragaria virginiana Fraxinus latifolia Fritillaria lanceolata G Galium aparine Galium trifidium Galium sp. Gaultheria shallon Geranium dissectum Geranium molle Geranium pusillum Geum macrophyllum Gilia capitata Gilia capitat var. capitata Gleditisia triacanthos Goodyera oblongifolia Graultheria shallon Gymnocarpium dryopteris H Habenaria elegans Habenaria sp. Hedera helix Heuchera micrantha var. micrantha Hieracium albiflorum Hieracium lanatum Holcus lanatus Holodiscus discolor Hydrophyllum occidentale Hydrophyllum tenuipes Hypericum perforatum Hypericum sp. Hypochaeris radicata I Ilex aquifolium Iris chrysophylla Iris tenax J Juncus bufonius Juncus effusus Juglans nigra Juglans regia Juniperus chinensis Juniperus sabina Juniperus scopulorum L Lactuca muralis Lactuca sp. Lamium amplexicaule Lamium purpureum Lapsana communis Lathyrus aphaca Lathyrus holochlorus Lathryrus polyphyllus Lathyrus sp. Lemna minor Lemna trisulca Lepidium viginicum Leucojum aestivum Ligusticum apilifolium Lilium columbianum Linum usitatissiumum Lithophragma parviflora Linneae borealis Linnaea borealis var. longiflora Linanthus bicolor var. bicolor Listera cordata Lolium perenne Lotus sp. Lotus crassifolius var. subglaber Lotus purshiana Lomatium sp. Lomatium martindalei Lonicera ciliosa Lonicera hispidula Lonicera involucrata Lunaria annua Lupinus sp. Luzula parviflora Lysichitum americanum M Maianthemum dilatatum Malus sp. Marah oreganus Matricaria matricarioides Medicago sativa Melissa officinalis Mentha sp. Menziesia ferruginea Metasequoia Microsteris gracilis Mimulus dentatus Mimulus guttatus var. depauperatus Mitella caulescens Mitella nuda Montia parvifolia var. flagellaris Montia perfoliata Montia sibirica Myosotis laxa Myosotis sp. Myosotis macrosperma N Narcissus cv. Navarretia squarrosa Nemophila parviflora Nemophila parviflora var. parviflora O Oemlaria cerasiformis Oenanthe sarmentosa Onoclea sensibilis Oplopanax horridum Orobanche uniflora Osmaronia cerasiformis Osmorhiza chilensis Osmunda cinnamomea Osmunda regalis Oxalis oregana Oxalis trilliifolia Ozmorhiza chilensis P Pachistima myrsinites Peltiphyllum peltatum Petasites frigidus var. palmatus Phacelia sp Phacelia nemoralis Philadelphus lewisii Phleum pratense Photinia x fraseri Photinia serrulata Physocarpus capitatus Picea abies cv. Picea pungens cv. Picea sp. Pinus jeffreyi Pinus monticola Pinus mugo Pinus nigra Pinus ponderosa Pinus radiata Pinus sylvestris Pinus sp. Pityrogramma triangularis Plagiobothrys figuratus Plantago lanceolata Plantago major var. major Platanus sp. Plectritis congesta Poa annua Poa laxiflora Poa marcida Poa pratensis Polypodium glycyrrhiza Polypodium scouleri Polystichum munitum Polystichum sp. Populus nigra Populus trichocarpa Potamogeton sp. Potentilla sp. Prunella vulgaris Prunus avium Prunus x blireiana Prunus cerasifera cv. Prunus laurocerasus Prunus persica Prunus virginiana var. demissa Pseudotsuga menziesii Psoralea physodes Pteridium aquilinum Q Quercus garryana Quercus palustris Quercus rubra Quercus sp. R Ranunculus sp. Ranunculus orthorhynchus Ranunculus unicinatus var. parviflorus Rhamnus purshiana Rhododendron cvs. Rhus diversiloba= Tocicodendron diversilobrum Rhus typhina Ribes bracteosum Ribes divaricatum Ribes laxiflorum Ribes lobbii Ribes sanguineum Ribes sp. Romanzoffia sp. Rorippa nasturtium-aquaticum Rosa eglanteria Rosa gymnocara Rosa multiflora Rosa pisocarpa Rosa sp. Rubus discolor Rubus laciniatus Rubus leucodermis Rubus parviflorus Rubus spectabilis Rubus ursinus Rubus vitifolius Rumex acetosella S Salix sp. Sambucus cerulea Sambucus cerulea var. arborescens Sambucus racemosa Sanicula bipinnatifida Sanicula crassicaulis Satureja douglasii Saxifraga caespitosa Saxifraga marshalii Saxifraga mertensiana Saxifraga nuttallii Saxifraga occidentalis var. rufidula Scoliopus hallii Sedum sp. Sedum oreganum Senecio jacobaea Senecio sp. Senecio triangularis Senecio vulgaris Selaginella wallacei Sequoiadendron giganteum Sequoia sempervirens Sherardia arvensis Sidalcea campestris Sidalcea virgata Silene hookeri Silybum marianum Sisymbrium officinale Sisyrinchium angustifolium Smilacina racemosa Smilacina sessilifolia Smilacina stellata Solanum dulcamara Sorbus douglasii Spiraea sp.v Spiraea x vanhouttei Stachys sp. Stellaria crispa Stellaria media Stellaria sp. Stachys cooleyae Stachys mexicana Stachys sp Streptopus amplexifolius var. americanus Streptopus roseus Symphoricarpos albusv Symphoricarpos mollis Synthyris reniformis Syringa cv. T Tanacetum vulgare Taracacum officinale Taraxacum sp. Taxus brevifolia Tellima grandiflora Thalictrum occidentale Thalicturm sp. Thelypteris phegopteris Thelypteris sp Thuja plicata Tiarella trifoliata var trifoliata Tolmiea menziesii Tonella tenella Tragopogon porrifolius Trautvettaria caroliniensis Trientalis latifolia Trillium albidum Trillium chloropetalum Trillium ovatum Trifolium dubiumv Trifolium pratense Trifolium procumbens Trifolium repens Trifolium sp. Trifolium subterraneum Tsuga heterophylla Typa latifolia U Urtica dioica var. lyallii V Vaccinium membranaceum Vaccinium ovatum Vaccinium ovalifolium Vaccinium parvifolium Valeriana scouleri Valerianella locusta Vancouveria hexandra Veratrum californicum var. caudatum Veronica americana Veronica serpyllifolia var. serpyllifolia Veronica sp. Viburnum Vinea americana Viola glabella Viola praemorsa Viola sempervirens Vicia cracca Vicia disperma Vicia hirsuta Vicia sativa Vicia sp.(vech) Vicia tetrasperma Vicia villosa Vinca major W Wolffia punctata Woodwardia fimbriata