Technical & Scientific Review Committee Revised January 2018

Purpose The on this list are species that threaten the health and vitality of native and animal communities, humans, and the economy. This list represents all non-native plant species that have been publically listed by Clackamas, Clark, Multnomah, County Cooperative Weed Management Area (4CCWMA) MOU signatories. This list is intended to raise awareness about these species in our region. Most of these species have been documented within our CWMA boundary.

Rank Designations The 4CCWMA Technical & Scientific Review Committee has assigned ranks to most of these species to help characterize their establishment and invasiveness in within our CWMA boundary. Rank designations are subject to and in many cases likely to change based on additional knowledge and/or refinement of rank definitions. Rank designations were made based on professional opinion, but do not represent a formal, scientific risk assessment for our region. These ranks are not intended to reflect partner ranks.

Rank Definitions: A = red alert, most invasive, still eradicable on a regional or local scale or limited spread B = most invasive, locally abundant C = most invasive, widespread D = less aggressive, wildland invaders, less impact on natural systems E = aggressive primarily in horticultural/agricultural situations; note: this category is incomplete F= needs more info, should be noted if and where it's a problem W= watch list Needs investigation= has not yet been evaluated or not enough information is available to properly evaluate these species

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

4CCWMA Designation Scientific Name Common Name Family Listing Partners A Aegilops ovata ovate goatgrass Poaceae CSWCD, ODA A Aegilops triuncialis barbed goatgrass Poaceae CSWCD, ODA, OPRD CSWCD, CCNWCB, ODA, Port of A Alhagi pseudalhagi camelthorn Fabaceae Portland A Alyssum corsicum yellow tuft ODA A Alyssum murale yellow tuft Brassicaceae CSWCD, ODA A Ambrosia tomentosa skeletonleaf bursage CSWCD A Anchusa officinalis common bugloss Boraginaceae CSWCD, CCNWCB, ODA A Berteroa incana hoary allysum Brassicaceae CSWCD, CCNWCB, ODA CSWCD, CCNWCB, ODA, Port of A Bryonia alba white bryonia Cucurbitaceae Portland A Carduus acanthoides plumeless thistle Asteraceae CoP, CSWCD, CCNWCB, ODA A Carthamus baeticus smooth distaff thistle Asteraceae CSWCD, ODA A Carthamus lanatus wooly distaff thistle Asteraceae CSWCD, ODA CoG, CoP, CSWCD, CCNWCB, CWS, ODA, Port of Portland, A Centaurea calcitrapa star-thistle Asteraceae SPVRC, USFS - Mt Hood CoG, CoP, CSWCD, ODA, Port of A Centaurea iberica Iberian knapweed Asteraceae Portland CoG, CoP, CSWCD, CCNWCB, CWS, ODA, OPRD, Port of A Centaurea solstitialis yellow starthistle Asteraceae Portland, SPVRC, USFS - Mt Hood A Centaurea virgata squarrose knapweed Asteraceae CoP, CSWCD, ODA A Cuscuta japonica Japanese dodder Convolvulaceae CSWCD, ODA, Port of Portland A Cyperus rotundus purple nutsedge Cyperaceae CSWCD, ODA, Port of Portland A Delairea odorata Cape ivy Asteraceae CSWCD, ODA CoG, CoP, CSWCD, ODA, OPRD, A Echium plantagineum salvation Jane Boraginaceae Port of Portland CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, TNC-WV A Euphorbia oblongata oblong spurge Euphorbiaceae North

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG CoP, CSWCD, CCNWCB, CWS, ODA, OPRD, Port of Portland, A Galega officinalis goatsrue Fabaceae WMSWCD CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, TNC-WV North, USFS - Mt Hood, A Heracleum mantegazzianum giant hogweed Apiaceae WMSWCD CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, TNC-WV North, USFS - Mt Hood, A aurantiacum orange hawkweed Asteraceae WMSWCD CoG, CoP, CSWCD, CCNWCB, yellow hawkweed, meadow CWS, ODA, OPRD, Port of A Hieracium caespitosum hawkweed Asteraceae Portland, SPVRC, USFS - Mt Hood CoG, CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, A Hieracium pilosella mouse-ear hawkweed Asteraceae TNC-WV North CSWCD, CCNWCB, ODA, Port of A Hieracium piloselloides king-devil hawkweed Asteraceae Portland CSWCD, CCNWCB, ODA, Port of A Hieracium X floribundum yellow hawkweed Asteraceae Portland, USFS - Mt Hood A Hydrocharis morsus-ranae common frogbit Hydrocharitaceae CSWCD, ODA CoG, ODA, OPRD, Port of A chalepensis lens-podded whitetop Brassicaceae Portland CoG, CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, A Lepidium draba hoary cress Brassicaceae USFS - Mt Hood CSWCD, CWS, ODA, OPRD, Port A Lepidium latifolium perennial pepperweed Brassicaceae of Portland, USFS - Mt Hood hairy whitetop, upright A Lepidium strictum pepperweed Brassicaceae CoG, Port of Portland

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

A Limnobium laevigatum West Indian spongeplant Hydrocharitaceae CSWCD, ODA, Port of Portland Ludwigia peploides ssp. A montevidensis water primrose Onagraceae CoP, CSWCD, ODA A Lysimachia vulgaris garden loosestrife Primulaceae CCNWCB, ODA, Port of Portland A Nardus stricta matgrass Poaceae CSWCD, ODA CoG, CoP, CSWCD, CCNWCB, CWS, ODA, OPRD, Port of A Nymphoides peltata yellow floatingheart Menyanthaceae Portland, THPRD CoG, CoP, CSWCD, CCNWCB, A Onopordum acanthium scotch thistle Asteraceae ODA, OPRD, Port of Portland A Onopordum tauricum scotch thistle Asteraceae CSWCD, ODA A Peganum harmala African rue Nitrariaceae CSWCD, ODA CoG, CoP, CSWCD, CCNWCB, CWS, ODA, Port of Portland, A Phragmites australis common reed Poaceae WMSWCD CoG, CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, A Potentilla recta sulphur cinquefoil Rosaceae USFS - Mt Hood CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, TNC-WV North, USFS - Mt Hood, A Pueraria montana var. lobata kudzu Fabaceae WMSWCD CoG, CoP, CSWCD, CCNWCB, A Rhaponticum repens Russian knapweed, hardheads Asteraceae ODA, Port of Portland A Saccharum ravennae ravennagrass Poaceae CCNWCB, ODA A Sagittaria platyphylla delta arrowhead Alismataceae CoP CoG, CoP, CSWCD, CCNWCB, A Silybum marianum blessed milk thistle Asteraceae ODA, OPRD, Port of Portland A Solanum elaeagnifolium silverleaf nightshade Solanaceae CSWCD, CCNWCB, ODA A Spartina alterniflora smooth cordgrass Poaceae CSWCD, CCNWCB, ODA A Spartina anglica common cordgrass Poaceae CSWCD, CCNWCB, ODA A Spartina densiflora dense-flowered cordgrass Poaceae CSWCD, CCNWCB, ODA

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

A Spartina patens saltmeadow cordgrass Poaceae CSWCD, CCNWCB, ODA A Stratiotes aloides water soldiers Hydrocharitaceae CSWCD, ODA, Port of Portland CSWCD, CWS, ODA, Port of A Trapa natans European water chestnut Lythraceae Portland A Tussilago farfara coltsfoot Asteraceae CSWCD, ODA CoG, CoP, CSWCD, CCNWCB, EMSWCD, ODA, OPRD, Port of Portland, TNC-WV North, USFS - A Ulex europaeus gorse Fabaceae Mt Hood, WMSWCD A Utricularia inflata swollen bladderwort Lentibulariaceae CoP, Port of Portland A Verbena bonariensis tall verbena Verbenaceae CoG, CoP, Port of Portland A Zygophyllum fabago Syrian bean-caper Zygophyllaceae CSWCD, CCNWCB, ODA CoP, CCNWCB, ODA, Port of B Abutilon theophrasti velvetleaf Malvaceae Portland CoG, CoP, Port of Portland, B Acer platanoides maple Sapindaceae SPVRC, USFS - Mt Hood CoG, CoP, CSWCD, ODA, OPRD, B Ailanthus altissima tree-of-heaven Simaroubaceae Port of Portland, USFS - Mt Hood B Alisma lanceolatum lanceleaf water plantain Alismataceae CWS CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, TNC-WV North, THPRD, USFS - Mt Hood, B Alliaria petiolata garlic mustard Brassicaceae WMSWCD CoG, CoP, CSWCD, CCNWCB, CWS, ODA, OPRD, Port of B Amorpha fruticosa indigo bush Fabaceae Portland, SPVRC B Artemisia absinthium absinth wormwood Asteraceae CCNWCB B Arum italicum Italian arum Araceae CoP, CWS, OPRD B Betula pendula European white birch Betulaceae CoP

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, TNC-WV North, USFS - Mt Hood, B Brachypodium sylvaticum false brome Poaceae WMSWCD CoG, CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, B Buddleja davidii butterfly bush Scrophulariaceae SPVRC, USFS - Mt Hood CoP, CCNWCB, CWS, ODA, OPRD, SPVRC, TNC-WV North, USFS - Mt B Centaurea diffusa diffuse knapweed Asteraceae Hood CoG, CoP, CSWCD, CCNWCB, CWS, ODA, OPRD, Port of Centaurea stoebe ssp. Portland, SPVRC, TNC-WV North, B micranthos spotted knapweed Asteraceae USFS - Mt Hood CoG, CoP, CSWCD, CCNWCB, CWS, ODA, OPRD, Port of Portland, SPVRC, THPRD, USFS - B Centaurea X moncktonii meadow knapweed Asteraceae Mt Hood CoG, CoP, CSWCD, CWS, EMSWCD, ODA, OPRD, Port of B Clematis vitalba traveler’s joy Ranunculaceae Portland, SPVRC, USFS - Mt Hood B Cyperus esculentus yellow nutsedge Cyperaceae CSWCD, CCNWCB, ODA, OPRD CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, TNC-WV B Daphne laureola spurge laurel Thymelaeaceae North, WMSWCD B Euphorbia esula leafy spurge Euphorbiaceae CoP, CSWCD, CCNWCB, ODA B Euphorbia lathyris mole plant Euphorbiaceae CoP B Fallopia convolvulus climbing bindweed Polygonaceae CoG, CoP

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, TNC-WV North, THPRD, USFS - Mt Hood, B Fallopia japonica var. japonica Japanese knotweed Polygonaceae WMSWCD CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, TNC-WV North, THPRD, USFS - Mt Hood, B Fallopia sachalinensis giant knotweed Polygonaceae WMSWCD CoG, CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, B Geranium lucidum shining geranium Geraniaceae SPVRC, USFS - Mt Hood CoG, CoP, CSWCD, CCNWCB, CWS, ODA, OPRD, Port of Portland, SPVRC, USFS - Mt B Impatiens glandulifera policemen's helmet Balsaminaceae Hood, WMSWCD CoG, CoP, CCNWCB, CWS, ODA, OPRD, Port of Portland, SPVRC, B Iris pseudacorus yellow flag Iridaceae USFS - Mt Hood CoG, CoP, CSWCD, CWS, ODA, B Lamiastrum galeobdolon yellow archangel Lamiaceae OPRD, Port of Portland, SPVRC CoG, CoP, CCNWCB, ODA, OPRD, B Linaria dalmatica ssp. dalmatica Dalmation toadflax Plantaginaceae Port of Portland, USFS - Mt Hood yellow toadflax, butter-and- CoG, CoP, CSWCD, ODA, OPRD, B Linaria vulgaris eggs Plantaginaceae Port of Portland, USFS - Mt Hood B Lunaria annua money plant Brassicaceae CoP CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, ODA, OPRD, Port of Portland, SPVRC, THPRD, USFS B Lythrum salicaria purple loosestrife Lythraceae - Mt Hood, WMSWCD B Melissa officinalis lemon balm Lamiaceae CoP B Mentha pulegium pennyroyal Lamiaceae CoP

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

CoG, CoP, CSWCD, CCNWCB, CWS, ODA, OPRD, Port of B Myriophyllum aquaticum parrots feather Haloragaceae Portland, USFS - Mt Hood B Paulownia tomentosa princess tree Paulowniaceae CoP green alkanet, evergreen B Pentaglottis sempervirens bugloss Boraginaceae CoP, OPRD CoG, CoP, CCNWCB, CWS, ODA, OPRD, Port of Portland, SPVRC, B Persicaria wallichii var. wallichii Himalayan knotweed Polygonaceae USFS - Mt Hood, WMSWCD CoG, CoP, CSWCD, EMSWCD, OPRD, Port of Portland, SPVRC, B Phytolacca americana pokeweed Phytolaccaceae TNC-WV North, WMSWCD B Populus alba white poplar Salicaceae CoP B Prunus lusitanica laurel Rosaceae CoG, CoP, OPRD CoG, CoP, CSWCD, ODA, OPRD, B Ranunculus ficaria lesser celandine Ranunculaceae Port of Portland, THPRD B Rosa eglanteria sweet briar Rosaceae CoP, OPRD B Rosa multiflora multiflora rose Rosaceae CoG, CoP, OPRD CoG, CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, B Senecio jacobaea Tansy ragwort Asteraceae USFS - Mt Hood B Sisymbrium officinale hedge mustard Brassicaceae CoP B Solanum nigrum garden nightshade Solanaceae CoG, CoP B Sonchus oleraceus common sowthistle Asteraceae CoP B Ulmus pumila Siberian elm Ulmaceae CoP B Vinca major periwinkle (large leaf) Apocynaceae CoG, CoP, OPRD, SPVRC B Vinca minor periwinkle (small leaf) Apocynaceae CoG, CoP, OPRD, SPVRC C Alopecurus pratensis meadow foxtail Poaceae CoP C Anthoxanthum odoratum sweet vernalgrass Poaceae CoP C Arrhenatherum elatius tall oatgrass Poaceae CoP C Bromus diandrus ripgut brome Poaceae CoP C Calystegia sepium ssp. angulata hedge false bindweed Convolvulaceae CoG, CoP

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

CoG, CoP, CSWCD, CCNWCB, ODA, Port of Portland, SPVRC, C Cirsium arvense thistle Asteraceae USFS - Mt Hood CoG, CoP, CSWCD, CCNWCB, ODA, Port of Portland, USFS - Mt C Conium maculatum poison-hemlock Apiaceae Hood CoG, CoP, ODA, Port of Portland, C Convolvulus arvensis field morning-glory Convolvulaceae USFS - Mt Hood C Crataegus monogyna English hawthorn Rosaceae CoG, CoP CoG, CoP, CSWCD, ODA, OPRD, Port of Portland, SPVRC, USFS - C Cytisus scoparius Scot’s broom Fabaceae Mt Hood C Daucus carota Queen Anne’s lace Apiaceae CoG, CoP, CSWCD CoG, CoP, CSWCD, Port of C Dipsacus fullonum common teasel Dipsacaceae Portland CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, USFS - C Egeria densa Brazilian elodea Hydrocharitaceae Mt Hood C Elymus repens quackgrass Poaceae CoP, USFS - Mt Hood CoG, CoP, CSWCD, CCNWCB, CWS, EMSWCD, OPRD, SPVRC, TNC-WV North, THPRD, C Fallopia X bohemica bohemian knotweed Polygonaceae WMSWCD C Foeniculum vulgare fennel Apiaceae CoG, CoP CoG, CoP, CSWCD, ODA, Port of C Geranium robertianum herb robert Geraniaceae Portland, SPVRC, USFS - Mt Hood C Geum urbanum European avens, Herb bennet Rosaceae CoP, OPRD CoG, CoP, CSWCD, ODA, OPRD, Port of Portland, SPVRC, USFS - C Hedera helix English ivy Araliaceae Mt Hood C Hedera hibernica Atlantic ivy Araliaceae CoG, CoP, CSWCD, ODA, OPRD C Holcus lanatus velvetgrass Poaceae CoP

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

CoG, CoP, CSWCD, ODA, OPRD, C Hypericum perforatum St. John's wort Hypericaceae Port of Portland, USFS - Mt Hood C Hypochaeris radicata spotted cat’s ear Asteraceae CoP, CSWCD CoG, CoP, Port of Portland, C Ilex aquifolium English holly Aquifoliaceae SPVRC, USFS - Mt Hood C Impatiens capensis jewelweed Balsaminaceae CoP, CSWCD, OPRD C Juncus effusus ssp. effusus European soft rush Juncaceae CoP C Lactuca serriola prickly lettuce Asteraceae CoG, CoP C Lapsana communis nipplewort Asteraceae CoP CoP, CSWCD, ODA, OPRD, Port of C Lathyrus latifolius everlasting pea Fabaceae Portland, USFS - Mt Hood C Leucanthemum vulgare oxeye daisy Asteraceae CoG, CoP, CSWCD C Lolium perenne perennial ryegrass Poaceae CoP C Lotus corniculatus bird’s foot trefoil Fabaceae CoG, CoP C Lotus uliginosus greater bird's foot trefoil Fabaceae CoP C Lysimachia nummularia creeping jenny Primulaceae CoP C Lythrum portula spatula leaf purslane Lythraceae CoP C Melilotus officinalis sweetclover Fabaceae CoP C Mycelis muralis wall lettuce Asteraceae CoP CoG, CoP, CCNWCB, CWS, ODA, OPRD, Port of Portland, USFS - C Myriophyllum spicatum Eurasian watermilfoil Haloragaceae Mt Hood C Nasturtium officinale European watercress Brassicaceae CoP C Parentucellia viscosa yellow glandweed Orobanchaceae CoG, CoP CoG, CoP, CSWCD, ODA, OPRD, Port of Portland, SPVRC, USFS - C Phalaris arundinacea reed canarygrass Poaceae Mt Hood C Potamogeton crispus curly leaf pondweed Potamogetonaceae CoP, CSWCD, USFS - Mt Hood C Prunus avium sweet cherry Rosaceae CoP, OPRD, SPVRC C Prunus laurocerasus English laurel, cherry laurel Rosaceae CoG, CoP, SPVRC C Ranunculus acris tall buttercup Ranunculaceae CoP C Ranunculus repens creeping buttercup Ranunculaceae CoG, CoP, USFS - Mt Hood C Robinia pseudoacacia black locust Fabaceae CoG, CoP, USFS - Mt Hood

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

CoG, CoP, CSWCD, ODA, OPRD, Armenian blackberry, Port of Portland, SPVRC, USFS - C Rubus bifrons Himalayan blackberry Rosaceae Mt Hood Evergreen blackberry, cutleaf C Rubus laciniatus blackberry Rosaceae CoP, CSWCD C Schedonorus arundinaceus tall fescue Poaceae CoP C Solanum dulcamara bittersweet nightshade Solanaceae CoP CoG, CoP, CSWCD, ODA, Port of C Taeniatherum caput-medusa medusahead Poaceae Portland C Tanacetum vulgare common tansy Asteraceae CoP, CSWCD, CCNWCB, OPRD CoG, CSWCD, CCNWCB, ODA, C Tribulus terrestris puncturevine Zygophyllaceae OPRD, Port of Portland C Trifolium arvense hare's foot clover Fabaceae CoP C Trifolium repens white clover Fabaceae CoP C Trifolium subterraneum subterraneum clover Fabaceae CoP C Vicia cracca tufted vetch Fabaceae CoG, CoP C Vicia sativa garden Vetch Fabaceae CoG, CoP C Vicia villosa winter vetch Fabaceae CoP D Acer pseudoplatanus sycamore maple Sapindaceae CoP D Aegopodium podagraria goutweed, Bishop's weed Apiaceae CoP D Aesculus hippocastanum horse chestnut Sapindaceae CoP D Agrostis capillaris colonial bentgrass Poaceae CoP D Agrostis stolonifera Creeping bentgrass Poaceae CoP CSWCD, ODA, Port of Portland, D Ambrosia artemisiifolia common ragweed Asteraceae USFS - Mt Hood D Arctium minus common burdock Asteraceae CoP D Bromus tectorum cheatgrass Poaceae CoP D Callitriche stagnalis pond water-starwort Plantaginaceae CoP CoG, CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, D Carduus pycnocephalus Italian thistle Asteraceae TNC-WV North CoG, CoP, CSWCD, CCNWCB, D Carduus tenuiflorus slender flowered thistle Asteraceae ODA, OPRD

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

CoG, CoP, CSWCD, CCNWCB, ODA, OPRD, Port of Portland, D Chondrilla juncea rush skeletonweed Asteraceae SPVRC D Cichorium intybus chicory Asteraceae CoP CoG, CoP, CSWCD, CCNWCB, ODA, Port of Portland, SPVRC, D Cirsium vulgare bull thistle Asteraceae USFS - Mt Hood CSWCD, CCNWCB, ODA, Port of D Cynoglossum officinale houndstongue Boraginaceae Portland, USFS - Mt Hood D Hieracium laevigatum smooth hawkweed Asteraceae CoG, CoP, CCNWCB D Houttuynia cordata chameleon plant Saururaceae CoP D Laburnum X watereri Vossi' Fabaceae CoP D Field pepperweed Brassicaceae Port of Portland D Lepidium didymum Lesser wartcress Brassicaceae Port of Portland

D Lepidium heterophyllum Purpleanther field pepperweed Brassicaceae Port of Portland D Ligustrum vulgare privet Oleaceae CoP D Lolium multiflorum annual ryegrass Poaceae CoP fragrant waterlily, white CoP, CCNWCB, Port of Portland, D Nymphaea odorata waterlily Nymphaeaceae USFS - Mt Hood D Orobanche minor hellroot, small broomrape Orobanchaceae CSWCD, ODA, Port of Portland D Phleum pratense timothy Poaceae CoP D Poa annua annual bluegrass Poaceae CoP D Rumex obtusifolius broad leaved dock Polygonaceae SPVRC D Schoenoplectus mucronatus ricefield bulrush Cyperaceae CCNWCB D Secale cereale cultivated rye Poaceae CoP D Senecio vulgaris common groundsel Asteraceae CSWCD D Silene coronaria mullein pink, rose campion Caryophyllaceae CoP white campion, bladder D Silene latifolia campion Caryophyllaceae CoP D Solanum physalifolium hairy nightshade Solanaceae CoP CoG, CSWCD, CCNWCB, ODA, D Solanum rostratum buffalobur Solanaceae Port of Portland

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

D Sonchus arvensis field sowthistle Asteraceae CoP, CSWCD D Sonchus asper perennial sowthistle Asteraceae CoP D Sorbus aucuparia European mountain-ash Rosaceae CoP D Trifolium pratense red clover Fabaceae CoP D Verbascum blattaria moth mullein Scrophulariaceae CoP D Verbascum thapsus mullein Scrophulariaceae CoP D Viburnum opulus var. opulus Guelder rose Adoxaceae CoP D Xanthium spinosum cocklebur Asteraceae CSWCD, ODA, USFS - Mt Hood CoP, CSWCD, CCNWCB, ODA, E Carduus nutans musk thistle Asteraceae Port of Portland E Euphorbia myrsinites myrtle spurge Euphorbiaceae CSWCD, CCNWCB, ODA E Galium odoratum sweet woodruff Rubiaceae CoP E Lamium maculatum white nancy, spotted henbit Lamiaceae CoP CoP, CCNWCB, ODA, Port of E Sorghum halepense Johnson grass Poaceae Portland, USFS - Mt Hood E Trifolium hybridum alsike clover Fabaceae CoP F Anthriscus sylvestris wild chervil Apiaceae CSWCD F Centaurea jacea brown knapweed Asteraceae CoG, CoP, CCNWCB, CWS F Echium vulgare viper's bugloss, blueweed Boraginaceae CCNWCB F Laburnum anagyroides golden Chain tree Fabaceae CoP F Phyllostachys heteroclada water bamboo Poaceae CoP F Phyllostachys nidularia big-node bamboo Poaceae CoP F Sasa palmata broadleaf Bamboo Poaceae CoP F Sasa veitchii bamboo Poaceae CoP F Spartium junceum Spanish broom Fabaceae CSWCD, CCNWCB, ODA, OPRD needs investigation Acaena novae-zelandiae biddy-biddy Rosaceae ODA needs investigation Adonis aestivalis pheasant's eye Ranunculaceae ODA CSWCD, ODA, OPRD, Port of needs investigation Aegilops cylindrica jointed goatgrass Poaceae Portland needs investigation Allium triquetrum 3-angled onion Amaryllidaceae CoP, Port of Portland small bugloss, European needs investigation Anchusa arvensis bugloss Boraginaceae CCNWCB needs investigation Anchusa azurea Italian bugloss Boraginaceae OPRD

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

needs investigation Cabomba caroliniana Cabombaceae CCNWCB, USFS - Mt Hood needs investigation Castanea mollissima Chinese chestnut Fagaceae SPVRC needs investigation Centaurea macrocephala Asteraceae CCNWCB needs investigation Centaurea nigra Asteraceae CCNWCB tyrol knapweed, short fringed needs investigation Centaurea nigrescens knapweed Asteraceae CCNWCB, CWS needs investigation Clematis orientalis Ranunculaceae CCNWCB needs investigation Crupina vulgaris common crupina Asteraceae CCNWCB, ODA needs investigation Cuscuta approximata smoothweed alfalfa dodder Convolvulaceae Port of Portland needs investigation Dipsacus laciniatus Dipsacaceae ODA needs investigation Elaeagnus angustifolia Russian-olive Elaeagnaceae CCNWCB needs investigation Epilobium hirsutum Onagraceae CCNWCB needs investigation Glyceria maxima Poaceae CCNWCB needs investigation Gypsophila paniculata baby's breath Caryophyllaceae CCNWCB needs investigation Halogeton glomeratus saltlover Amaranthaceae CSWCD, ODA needs investigation Helianthus ciliaris Asteraceae CSWCD, CCNWCB needs investigation Hemizonia pungens Asteraceae CSWCD, CCNWCB, ODA needs investigation Hieracium atratum polar hawkweed Asteraceae CCNWCB needs investigation Hieracium flagellare whiplash hawkweed Asteraceae CCNWCB needs investigation Hieracium glomeratum queen-devil hawkweed Asteraceae CCNWCB needs investigation Hieracium lactucella pale hawkweed Asteraceae CCNWCB needs investigation Hieracium maculatum spotted hawkweed Asteraceae CCNWCB needs investigation European hawkweed Asteraceae CCNWCB needs investigation Hyoscyamus niger black henbane, hog's bean Solanaceae CCNWCB needs investigation Hypericum calycinum ornamental St. John's wort Hypericaceae OPRD needs investigation Isatis tinctoria Brassicaceae CCNWCB, ODA needs investigation Kochia scoparia Amaranthaceae CCNWCB, ODA, Port of Portland hairy whitetop, globepodded needs investigation Lepidium appelianum hoarycress Brassicaceae CCNWCB, ODA, Port of Portland needs investigation Ludwigia grandiflora water primrose Onagraceae CSWCD, Port of Portland CoG, CoP, CSWCD, CCNWCB, needs investigation Ludwigia hexapetala Onagraceae ODA, OPRD, Port of Portland

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

CSWCD, CCNWCB, ODA, OPRD, needs investigation Ludwigia peploides Onagraceae Port of Portland needs investigation Lythrum virgatum Lythraceae CCNWCB needs investigation Mirabilis nyctaginea Nyctaginaceae CCNWCB needs investigation Myriophyllum heterophyllum Haloragaceae CCNWCB needs investigation Picris hieracioides Asteraceae CCNWCB needs investigation Rorippa sylvestris creeping yellow cress Brassicaceae CoG, ODA, Port of Portland needs investigation Sagittaria graminea Alismataceae CCNWCB needs investigation Salvia aethiopis Lamiaceae CCNWCB, ODA needs investigation Salvia pratensis Lamiaceae CCNWCB needs investigation Salvia sclarea Lamiaceae CCNWCB needs investigation Sphaerophysa salsula swainsonpea Fabaceae ODA needs investigation Thymelaea passerina Thymelaeaceae CCNWCB needs investigation Utricularia vulgaris common bladderwort Lentibulariaceae CoP W Allium vineale wild garlic Amaryllidaceae OPRD W Ampelopsis brevipedunculata porcelain-berry Vitaceae CoP W Arundo donax giant reed Poaceae CSWCD, CWS W Aucuba japonica Japanese laurel Garryaceae CoP CoP, CSWCD, CCNWCB, CWS, W Butomus umbellatus flowering rush Butomaceae ODA, Port of Portland W Carex pendula drooping sedge Cyperaceae CoP, CSWCD, Port of Portland CoG, CoP, ODA, OPRD, Port of W Cortaderia jubata Jubata grass Poaceae Portland W Cortaderia selloana pampas grass Poaceae CoP, OPRD, USFS - Mt Hood W Crocosmia X crocosmiiflora crocosmia, montbretia Iridaceae CoP W Cytisus striatus Portuguese Broom Fabaceae CoP, ODA, OPRD W Epipactis helleborine Orchidaceae CoP, Port of Portland W Erica lusitanica Spanish heath Ericaceae ODA CoP, CSWCD, CCNWCB, ODA, W Genista monspessulana French Broom Fabaceae OPRD CoG, CoP, CCNWCB, OPRD, W Hieracium lachenalii common hawkweed Asteraceae SPVRC

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG

common hawkweed, wall W Hieracium murorum hawkweed Asteraceae CCNWCB, OPRD CoP, CSWCD, CCNWCB, CWS, ODA, Port of Portland, USFS - Mt W Hydrilla verticillata hydrilla Hydrocharitaceae Hood W Impatiens balfourii Balfour's touch-me-not Balsaminaceae WMSWCD W Lathyrus sylvestris narrow-leaved everlasting pea Fabaceae OPRD Virginia creeper, woodbine, W Parthenocissus quinquefolia fiveleaved ivy Vitaceae CoP W Petasites japonicus Japanese sweet coltsfoot Asteraceae CoG, CoP, SPVRC W Phalaris aquatica harding grass Poaceae CoP, Port of Portland W Phyllostachys atrovaginata incense bamboo Poaceae CoP W Rubus vestitus European BB Rosaceae OPRD CoG, CoP, CCNWCB, ODA, Port of W Tamarix ramosissima saltcedar, tamarisk Tamaricaceae Portland W Viburnum plicatum doublefile viburnum Adoxaceae OPRD

Partners:

City of Portland (CoP); City of Gresham (CoG); Clackamas Soil & Water Conservation District (CSWCD); Clean Water Services (CWS); Clackamas County Noxious Weed Control Board (CCNWCB); Department of Agriculture (ODA); Oregon Parks and Recreation Department (OPRD); Port of Portland; (SPVRC); Forest Service (USFS)-Mt. Hood; West Multnomah Soil & Water Conservation District (WMSWCD);

4-COUNTY COOPERATIVE WEED MANAGEMENT AREA P: 503.210.6015 WWW.4COUNTYCWMA.ORG