Attachment_4_Oregon_Noxious_Weed_List.docx

Attachment 4: Oregon State Noxious Weed List

Noxious Weed Control Classification Definitions

Noxious weeds, for the purpose of this system, shall be listed as either A or B, and may be added to the T List, as directed by the Oregon State Weed Board.

A Listed Weed – a weed of known economic importance which occurs in the state in small enough infestations to make eradication or containment possible; or is not known to occur, but its presence in neighboring states make future occurrence in Oregon seem imminent (Table 1).

B Listed Weed – a weed of economic importance which is regionally abundant, but which may have limited distribution in some counties (Table 2).

T Listed Weed – Annually, a target list of weed species is selected that will be the focus for prevention and control by the Noxious Weed Control Program. Action against these weeds will receive priority. T listed noxious weeds are designated by the Oregon State Weed Board and directs ODA to develop and implement a statewide management plan. T listed noxious weeds are species selected from either the A or B list (Table 3).

Table I: A Listed weeds Common name Scientific name African rue Peganum harmala Camelthorn Alhagi pseudalhagi Cape-ive Delairea odorata Coltsfoot Tussilago farfara Common frogbit Hydrocharis morsus-ranea Cordgrass Common Spartina anglica Dense-flowered Spartina densiflora Saltmeadow Spartina patens Smooth Spartina alterniflora Delta arrowhead Sagittaria platyphyla European water chestnut Trapa natans Flowering rush Butomus umbellatus Garden yellow loosestrife Lysimachia vulgaris Giant hogweed Heracleum mantegazzianum Goatgrass Barb Aegilops triuncialis Ovate Aegilops ovata Goatsrue Galega officinalis Hawkweed King-devil Pilosella piloselloides (Hieracium) Mouse-ear Pilosella pilosella (Hieracium) Orange Pilosella aurantiacum (Hieracium) Yellow Pilosella floribundum (Hieracium) Hoary alyssum Berteroa incana Hydrilla Hydrilla verticillata Japanese dodder Cuscuta japonica Kudzu Pueraria lobata Matgrass Nardus stricta Oblong spurge Euphorbia oblongata Paterson’s curse Echium plantagineum Purple nutsedge Cyperus rotundus Ravennagrass Saccharum ravennea Silverleaf nightshade Solanum elaeagnifolium Squarrose knapweed Centaurea virgata Starthistle Iberian Centaurea iberica Purple Centaurea calcitrapa Syrian bean-caper Zygophyllum fabago Thistle Plumeless Carduus acanthoides Smooth distaff Carthamus baeticus Taurian Onopordum tauricum Welted (curly plumeless) Carduus crispus Woolly distaff Carthamus lanatus Water soldiers Stratiotes aloides West Indian spongeplant Limnobium laevigatum White bryonia Bryonia alba Yellow floating heart Nymphoides peltata Yellowtuft Alyssum murale, A. corsicum

Table II: B listed weeds Common name Scientific name Armenian (Himalayan) blackberry Rubus armeniacus (R. procerus, R. discolor) Biddy-biddy Acaena novae-zelandiae Broom French* Genista monspessulana Portuguese Cytisus striatus Scotch* Cytisus scoparius Spanish Spartium junceum Buffalobur Solanum rostratum Butterfly bush Buddleja davidii (B. variabilis) Common bugloss Anchusa officinalis Common crupina Crupina vulgaris Common reed Phragmities australis Creeping yellow cress Rorippa sylvestris Cutleaf teasel Dipsacus laciniatus Dodder Cuscuta spp.

Dyers woad Isatis tinctoria English ivy Hedera helix (H. hibernica) Eurasian watermilfoil Myriophyllum spicatum False brome Brachypodium sylvaticum Field bindweed* Convolvulus arvensis Garlic mustard Alliaria petiolata Geranium Herb Robert Geranium robertianum Shiny leaf geranium Geranium lucidum Gorse* Ulex europaeus Halogeton Halogeton glomeratus Houndstongue Cynoglossum officinale Indigo bush Amorpha fruticosa Ivy Atlantic Hedera hibernica English Hedera helix Johnsongrass Sorghum halepense Jointed goatgrass Aegilops cylindrica Jubata grass Cortaderia jubata Knapweeds Diffuse* Centaurea diffusa Meadow* Centaurea pratensis Russian* Acroptilon repens Spotted* Centaurea stoebe (C. maculosa) Knotweeds Giant Fallopia sachalinensis (Polygonum) Himalayan Polygonum polystachyum Japanese Fallopia japonica (Polygonum) Kochia Kochia scoparia Lesser celandine Ranunculus ficaria Meadow hawkweed Pilosella caespitosum (Hieracium) Mediterranean sage Salvia aethiopis Medusahead rye Taeniatherum caput-medusae

Continuation of B listed weeds Old man’s beard Clematis vitalba Parrot’s feather Myriophyllum aquaticum Perennial peavine Lathyrus latifolius Perennial pepperweed Lepidium latifolium Pheasant’s eye Adonis aestivalis Poison hemlock Conium maculatum Policeman’s helmet Impatiens glandulifera Puncturevine* Tribulus terrestris Purple loosestrife* Lythrum salicaria Ragweed Ambrosia artemisiifolia Ribbongrass Phalaris arundinacea Rush skeletonweed* Chondrilla juncea Saltcedar* Tamarix ramosissima Small broomrape Orabanche minor South American waterweed Egeria densa (Elodea) Spanish heath Erica lusitanica Spikeweed Hemizonia pungens Spiny cocklebur Xanthium spinosum Spurge laurel Daphne laureola Spurge Leafy* Euphorbia esula Myrtle Euphorbia myrsinites St. Johnswort* Hypericum perforatum Sulfur cinquefoil Potentilla recta Swainsonpea Sphaerophysa salsula Tansy ragwort* Senecio jacobaea (Jacobaea vulgaris) Thistles Bull* Cirsium vulgare Canada* Cirsium arvense Italian Carduus pycnocephalus Milk* Silybum marianum Musk* Carduus nutans Scotch Onopordum acanthium Slender-flowered* Carduus tenuiflorus Toadflax Dalmatian* Linaria dalmatica Yellow* Linaria vulgaris Tree of heaven Ailanthus altissima Velvetleaf Abutilon theophrasti Ventenata grass Ventenata dubia Water primrose Large-flower Ludwigia peploides, Water primrose L. hexapetala, Floating L.grandiflora Whitetop Hairy Lepidium pubescens Lens-podded Lepidium chalepensis Whitetop (hoary cress) Lepidium draba Yellow archangel Lamiastrum galeobdolon Yellow flag iris Iris pseudacorus Yellow nutsedge Cyperus esculentus Yellow starthistle* Centaurea solstitialis

Table III: T Listed. Target weeds.

Common name Scientific name African rue Peganum harmala Common bugloss Anchusa officinalis Cordgrass Common Spartina anglica Dense-flowered Spartina densiflora Saltmeadow Spartina patens Smooth Spartina alterniflora Dalmatian toadflax* Linaria dalmatica Field bindweed* Convolvulus arvensis Garlic mustard Alliaria petiolata Giant hogweed Heracleum mantegazzianum Goatsrue Galega officinalis Gorse Ulex europaeus Hawkweed Meadow Hieracium caespitosum Orange Hieracium aurantiacum Yellow Hieracium floribundum Knapweed Spotted Centaurea stoebe (C. maculosa) Squarrose Centaurea virgata Kudzu Pueraria lobata Leafy spurge* Euphorbia esula Matgrass Nardus stricta Paterson’s curse Echium plantagineum Perennial pepperweed Lepidium latifolium Portuguese broom Cytisus striatus Ribbongrass Phalaris arundinaceae Rush skeletonweed Chondrilla juncea Saltcedar* Tamarix ramosissima Starthistle Iberian Centaurea iberica Purple Centaurea calcitrapa Tansy ragwort* Senecio jacobaea Thistles Plumeless thistle Carduus acanthoides Taurian Onopordum tauricum Woolly distaff Carthamus lanatus Yellowtuft Alyssum murale, A. corsicum

*Indicates weeds targeted for biocontrol