A06_Attchmt16_InvasivePlantSpeciesList.pdf

Integrated Invasive Plant Management for the Medford District Revised Environmental Assessment

Chapter 2 – Integrated Invasive Plant Management and the Alternatives

Table 2-1. Summary of Documented Invasive Plant Sites

Scientific Names Common Name

Life Cycle

ODA

Status1

Treatment Group2

Category I acres sites

Primary Project Areas Common Habitat in SW

Oregon

Gross Treatment Acres

(includes Category I & II acres)3

Dicots Apiaceae (parsley family) Conium maculatum poison hemlock

Biennial B list D3

27.1 acres

38 sites

Rogue National Wild and Scenic River Corridor, Areas of Critical Environmental Concern (ACECs), Fritillaria Management Areas (FMAs), Cook's lomatium critical habitat

Widespread in riparian areas, floodplains, ditches, roadsides

Apocynaceae (dogbane family) Vinca major large-leaf periwinkle

Perennial NL D9

6.3 acres

16 sites Rogue National Wild and Scenic River Corridor

Roadsides, old home sites, residential areas

Araliaceae (ginseng family) Hedera helix, Hedera hibernica English ivy

Perennial B list D12

8.4 acres

10 sites Rogue National Wild and Scenic River Corridor, Cathedral Hills Recreation Site

Old home sites, woodlands near residential areas

Asteraceae (aster family) Acroptilon repens Russian knapweed

Perennial B list D4 2.9 acres 23 sites

Sam's Valley, roadsides Roadsides, grasslands 10

Ambrosia artemisiifolia annual ragweed

Annual B list D2

4.1 acres

4 sites Rogue National Wild and Scenic River Corridor

Riparian areas, river bars, valley bottoms

Carduus nutans musk thistle

Biennial B list D4

6.4 acres

3 sites Douglas and Oregon Gulch burned areas

Roadsides, ditches, burned areas

Carduus pycnocephalus Italian thistle

Annual B list D2

0.1 acres

1 sites Lower West Fork Evans Creek

Roadsides, disturbed soils, meadows, woodlands, chaparral

Carthamus lanatus woolly distaff-thistle

Annual A list D2

0.2 acres

1 sites Interstate 5 near Wolf Creek

Roadsides, disturbed openings

Centaurea × moncktonii meadow knapweed

Perennial B list D4 692.9 acres

1,339 sites

Rogue National Wild and Scenic River Corridor, Burton Nine Mile District Designated Reserve, Bobby Creek Research Natural Areas (RNA), Eight Dollar Mt ACEC, French Flat ACEC, Reeves Creek ACEC, Rough and Ready ACEC, roadsides, forest management project areas

Roadsides, meadows, river bars, disturbed openings

1,000

Scientific Names Common Name

Life Cycle

ODA

Status1

Treatment Group2

Category I acres sites

Primary Project Areas Common Habitat in SW

Oregon

Gross Treatment Acres

(includes Category I & II acres)3

Centaurea diffusa diffuse knapweed

Perennial B list D4 79 acres 85 sites

Rogue National Wild and Scenic River Corridor, Soda Mt Wilderness Area, Burton Nine Mile District Designated Reserve, Wild Rogue District Designated Reserve, Pilot Rock FMA, Dakubetede FMA, roadsides

Roadsides, rangeland 200

Centaurea melitensis Maltese starthistle

Biennial NL D4

6.6 acres

23 sites North River Road FMA Grasslands, disturbed soils, burned areas 10

Centaurea solstitialis yellow starthistle

Biennial B list D4 5,201.3 acres 4,033 sites

Rogue National Wild and Scenic River Corridor, Berry Creek District Designated Reserve, Burton Nine Mile District Designated Reserve, Soda Mt Wilderness Area, Cobleigh Road ACEC, Dakubetede ACEC, French Flat ACEC, Mariposa Botanical Area, North River Road FMA, Pilot Rock FMA, Rough and Ready ACEC, Roundtop Butte RNA, Sterling Mine Ditch ACEC, Table Rocks ACEC, roadsides, forest management project areas

Grasslands, disturbed soils, burned areas, river bars, roadsides

10,000

Centaurea stoebe spp. micranthos spotted knapweed

Perennial B list D4 872.1 acres

236 sites

Rogue National Wild and Scenic River Corridor, Wild Rogue District Designated Reserve, Cook's lomatium critical habitat near Cave Junction, roadsides, forest management project areas

Roadsides, disturbed openings, meadows, floodplains, river bars

1,000

Centaurea virgata squarrose knapweed

Perennial A list D4

0.5 acres

4 sites Illinois River Valley ACECs and Cook's lomatium habitat, roadsides

Roadsides, disturbed openings, meadows

Chondrilla juncea rush skeletonweed

Perennial B list D4 337.8 acres

517 sites

Rogue National Wild and Scenic River Corridor, Berry Creek District Designated Reserve, Wild Rogue District Designated Reserve, Table Rocks ACEC, King Mt ACEC, roadsides, forest management project areas

Roadsides, disturbed openings, river bars and floodplains

1,000

Cirsium arvense Canada thistle

Perennial B list D4 447.7 acres

1,627 sites

Soda Mt Wilderness Area, Rogue National Wild and Scenic River Corridor, Bobby Creek RNA, East Fork Whiskey Creek RNA, Lost Lake RNA, North Fork Silver Creek RNA, Old Baldy RNA, roadsides, forest management project areas

Widespread in roadsides, ditches, meadows, riparian areas, river floodplains

1,000

Cirsium vulgare bull thistle

Biennial B list D4 605.5 acres

2,462 sites

Soda Mt Wilderness Area, Rogue National Wild and Scenic River Corridor, Bobby Creek RNA, East Fork Whiskey Creek RNA, French Flat ACEC, Bald Mt FMA, Dakubetede FMA, North River Road FMA, roadsides, forest management project areas

Widespread in roadsides, meadows, riparian areas, burned areas, other disturbed openings

Common Name

Life Cycle

ODA

Status1

Treatment Group2

Category I acres sites

Primary Project Areas Common Habitat in SW

Oregon

Gross Treatment Acres

(includes Category I & II acres)3

Leucanthemum vulgare oxeye daisy

Perennial NL D4

3.6 acres

1 site Rogue National Wild and Scenic River Corridor, FMAs, Cook's lomatium critical habitat

Widespread in roadsides, meadows, river bars 250

Onopordum acanthium Scotch cotton-thistle

Biennial B list D4

2.5 acres

1 site One occurrence on a roadside north of East Fork Whiskey Creek RNA

Roadsides, disturbed pastures, open riparian areas

2.5

Senecio jacobaea tansy ragwort Perennial B list D4

181.9 acres

1,230 sites

Forest management project areas, burned areas, ACECs, mostly in western half of District

Mesic roadsides, pastures, forest openings 500

Silybum marianum blessed milkthistle

Biennial B list D4 0.1 acres 1 site

One occurrence in Quines Creek-Cow Creek watershed in north part of District

Not common, but known from roadsides and disturbed openings

Xanthium spinosum spiny cocklebur

Annual B list D2

5.6 acres

5 sites Rogue National Wild and Scenic River Corridor, ACECs, FMAs, Cook's lomatium critical habitat, roadsides

Roadsides, disturbed sites, riparian areas

Boraginaceae (borage family) Cynoglossum officinale houndstongue

Biennial B list D5 1,027 acres

58 sites

Cascades and oak foothills in eastern part of District, forest management project areas

Forests, woodlands, rangeland, roadsides

1,200

Brassicaceae (mustard family)

Alliaria petiolata garlic mustard

Biennial B list D6 153.1 acres

81 sites Rogue National Wild and Scenic River Corridor Riparian areas, floodplains 200

Alyssum alyssoides pale alyssum

Annual NL D1

0.66 acres

1 site FMAs, Cook's lomatium critical habitat

Widespread in grasslands, disturbed sites, and open habitats

Rarely treated.

0.1 acre / year

Alyssum corsicum, A.

murale yellowtufts

Perennial A list D6 40.8 acres 13 sites

All serpentine substrates in the Illinois River Valley Meadows, savannah, chaparral in serpentine soils

Isatis tinctoria dyer's woad

Biennial B list D6 318.8 acres

366 sites

Rogue National Wild and Scenic River Corridor, Williams Creek watershed, Oregon Gulch burn area, Soda Mt Wilderness Area, roadsides

River banks, bars, and floodplains; roadsides;

burned areas

Common Name

Life Cycle

ODA

Status1

Treatment Group2

Category I acres sites

Primary Project Areas Common Habitat in SW

Oregon

Gross Treatment Acres

(includes Category I & II acres)3

Lepidium campestre field pepperweed

Biennial NL D6

1.7 acres

3 sites ACECs, FMAs, Cook's lomatium critical habitat Widespread in disturbed sites, rangeland, other open habitats

< 1 acre / year

Lepidium draba whitetop

Perennial B list D6

16.3 acres

4 sites Beaver Creek-Applegate watershed, Rogue National Wild and Scenic River Corridor

Not common, but known from roadsides, cattle corrals, disturbed riparian areas in the Cascades

Clusiaceae (St. Johnswort family) Hypericum perforatum St. Johnswort

Perennial B list D9 34.2 acres 78 sites

ACECs, FMAs, Cook's lomatium critical habitat Widespread in roadsides, rangeland, floodplains, disturbed openings

1,000

Convolvulaceae (morning glory family) Convolvulus arvensis field bindweed

Perennial B list D9

0.4 acres

2 sites ACECs, FMAs, Cook's lomatium critical habitat

Widespread in roadsides and disturbed openings

Dipsacaceae (teasel family)

Dipsacus fullonum common teasel

Biennial NL D9 36.5 acres 98 sites

ACECs, FMAs, Cook's lomatium critical habitat

Widespread in roadsides, ditches, pastures, cultivated fields, and other open habitats

Dipsacus laciniatus cutleaf teasel

Biennial B list D9

87.9 acres

37 sites Soda Mt Wilderness Area, Mariposa Botanical Area, Applegate Valley, meadows and roadsides in the Cascades

Grasslands, roadsides, disturbed open areas

Euphorbiaceae (spurge family)

Euphorbia esula leafy spurge

Perennial B list D9 0.3 acres 2 sites

Rogue National Wild and Scenic River Corridor, Sam's Valley Grasslands, chaparral, open woodlands, riparian areas, roadsides

Fabaceae (pea family)

Cytisus scoparius Scotch broom

Perennial B list D12 988 acres

1,805 sites

Rogue National Wild and Scenic River Corridor, Wild Rogue and Soda Mountain Wilderness Areas, lands with wilderness characteristics, ACECs, FMAs, roadsides, forest management project areas

Widespread in roadsides, forest openings, woodlands, floodplains, riparian areas, meadows

2,000

Cytisus striatus striated broom Perennial B list D12

0.1 acres 1 site

Known from only one location in Gold Mt Creek watershed, northwest part of District

Roadsides, forest openings, woodlands, meadows 1

Genista monspessulana French broom

Perennial B list D12

35.6 acres

43 sites Rogue National Wild and Scenic River Corridor Roadsides, forest openings, woodlands, meadows 100

Common Name

Life Cycle

ODA

Status1

Treatment Group2

Category I acres sites

Primary Project Areas Common Habitat in SW

Oregon

Gross Treatment Acres

(includes Category I & II acres)3

Lathyrus latifolius perennial peavine

Perennial B list D7 28.2 acres 117 sites

Rogue National Wild and Scenic River Corridor, Wild Rogue and Soda Mountain Wilderness Areas, lands with wilderness characteristics, ACECs, FMAs, forest management project areas, roadsides

Widespread in roadsides, woodlands, forest openings, disturbed open habitats

1,000

Melilotus albus, M. officinalis sweetclovers

Perennial NL D7

1.4 acres

5 sites ACECs, FMAs, Cook's lomatium critical habitat

Roadsides, pastures, disturbed open habitats

< 1 acre / year

Spartium junceum Spanish broom

Perennial B list D12

31.3 acres

105 sites Rogue National Wild and Scenic River Corridor, Applegate Valley

Roadsides, river banks, open disturbed habitats 100

Ulex europaeus common gorse

Perennial B list D12 0.5 acres 2 sites

Only two sites known, in the Dad's Creek and McCullough Creek watersheds, northwest part of the District

Primarily coastal; otherwise uncommon, but known from roadsides in western edges of District

Geraniaceae (geranium family) Geranium lucidum shiny leaf geranium

Biennial B list D8 51.1 acres 8 sites

Rogue National Wild and Scenic River Corridor, Forest Creek watershed, in Applegate Valley

Semi-open riparian areas and woodlands

Geranium robertianum Robert geranium

Biennial B list D8

0.1 acres

1 site Whitehorse Creek watershed, east of Azalea

Mesic shaded to semi-open riparian areas, woodlands, forests

Haloragaceae (watermilfoil family) Myriophyllum aquaticum parrotsfeather

Perennial B list A-ALT

0.9 acres

5 sites Rogue National Wild and Scenic River Corridor Rogue River, irrigation ditches 10

Lamiaceae (mint family) Lamiastrum galeobdolon yellow archangel

Perennial B list D9

0.2 acres

2 sites Rogue National Wild and Scenic River Corridor

Not common, but known from riparian areas and mesic woodlands

Lythraceae (loosestrife family)

Lythrum salicaria purple loosestrife

Perennial B list A 37.6 acres 153 sites

Rogue National Wild and Scenic River Corridor

River banks and bars, riparian areas, ditches, pond and lake margins, wetlands

Onagraceae (evening primrose family)

Common Name

Life Cycle

ODA

Status1

Treatment Group2

Category I acres sites

Primary Project Areas Common Habitat in SW

Oregon

Gross Treatment Acres

(includes Category I & II acres)3

Ludwigia hexapetala water primrose

Perennial B list A-ALT

8.1 acres

18 sites Rogue National Wild and Scenic River Corridor In shallow slow-moving water along rivers, ditches, ponds

Ludwigia peploides floating water primrose

Perennial B list A-ALT

0.3 acres

1 site Rogue National Wild and Scenic River Corridor

In shallow slow-moving water along rivers, ditches, ponds

Plantaginaceae (plantain family) Linaria dalmatica ssp. dalmatica Dalmatian toadflax

Perennial B list D10

0.3 acres

21 sites Cascades east of Ashland, particularly in the Jenny Creek watershed

Not common, but known from roadsides and rangeland in the eastern part of the District

Linaria vulgaris yellow toadflax

Perennial B list D10

3.7 acres

5 sites Poorman Creek-Grave Creek watershed, Fall Creek-Klamath River watershed, and along Hwy 62, south of Prospect

Not common, but known from roadsides, pastures, and disturbed open areas

Polygonaceae (knotweed family) Polygonum cuspidatum Japanese knotweed

Perennial B list D11

97.2 acres

251 sites Rogue National Wild and Scenic River Corridor, Illinois River Corridor

Riparian areas, river banks 200

Polygonum sachalinense giant knotweed

Perennial B list D11

0.1 acres

1 site Rogue National Wild and Scenic River Corridor, Illinois River Corridor

Riparian areas, river banks 1

Ranunculaceae (buttercup family) Clematis vitalba evergreen clematis

Perennial B list D12 1.1 acres 2 sites

Only known from eastern boundary of East Fork Whiskey Creek RNA

Roadsides, riparian areas, floodplains, residential areas

Rosaceae (rose family)

Potentilla recta sulfur cinquefoil

Perennial B list D9 131.2 acres

48 sites

Applegate Valley and Cascades, including Soda Mt Wilderness Area

Roadsides, grasslands, rangeland, other open areas

Rubus armeniacus Armenian blackberry

Perennial B List D12 595.1 acres

1,552 sites

Rogue National Wild and Scenic River Corridor, ACECs, forest management project areas, where aggressive populations threaten Bureau Sensitive species

Widespread in riparian areas, drainage ditches, forest openings, roadsides throughout the valley, but most abundant below 3,000 feet elevation

Common Name

Life Cycle

ODA

Status1

Treatment Group2

Category I acres sites

Primary Project Areas Common Habitat in SW

Oregon

Gross Treatment Acres

(includes Category I & II acres)3

Rubus laciniatus evergreen blackberry

Perennial NL D12

3.2 acres

33 sites Rogue National Wild and Scenic River Corridor, ACECs, FMAs Roadsides, riparian areas, forest openings 50

Scrophulariaceae (figwort family) Verbascum blattaria, V.

thapsus moth mullein, common mullein

Biennial NL D9

33.7 acres

21 sites Rogue National Wild and Scenic River Corridor, ACECs, FMAs, Cook's lomatium critical habitat

Widespread in disturbed open sites < 1 acre / year

Simaroubaceae (quassia family) Ailanthus altissima tree of heaven

Perennial B list D12

12.1 acres

6 sites Rogue National Wild and Scenic River Corridor Riparian areas, river banks and bars, residential areas 25

Zygophyllaceae (caltrop family)

Tribulus terrestris puncturevine

Annual B list D1

15.3 acres

12 sites Rogue National Wild and Scenic River Corridor, recreation sites, equipment lots

Disturbed sites, parking lots, roadsides, sunny trail sides, sandy soils

Monocots Cyperaceae (sedge family) Cyperus esculentus yellow nutsedge

Perennial B list A

0.1 acres

2 sites Rogue National Wild and Scenic River Corridor Widespread in stream banks, disturbed soils, ditches, cultivated ground

< 1 acre / year

Iridaceae (iris family) Iris pseudacorus yellow flag iris

Perennial B list A 51.7 acres 73 sites

Rogue National Wild and Scenic River Corridor Wet shores of rivers, ponds, irrigation ditches

Poaceae (grass family) Aegilops cylindrica jointed goatgrass

Annual B list M1

10.2 acres

6 sites Cascade-Siskiyou National Monument, primarily in East Fork Cottonwood Creek and Upper Emigrant Creek watersheds

Roadsides, rangeland, agricultural fields

Aegilops triuncialis barbed goatgrass

Annual A list M1

1.2 acres

2 sites Lower West Fork Illinois River Valley

Roadsides, rangelands, grasslands, including serpentine substrates

Brachypodium sylvaticum false-brome

Perennial B list M2

3.4 acres

19 sites Rogue National Wild and Scenic River Corridor, Illinois River Corridor, Eight Dollar Mt ACEC

River bars, banks, and floodplains; wetlands;

roadsides; often in shade

Common Name

Life Cycle

ODA

Status1

Treatment Group2

Category I acres sites

Primary Project Areas Common Habitat in SW

Oregon

Gross Treatment Acres

(includes Category I & II acres)3

Bromus tectorum cheatgrass Annual NL M1

8.4 acres 22 sites

Burton Nine Mile District Designated Reserve, Dakubetede

ACEC

Disturbed grasslands, rangeland, chaparral, roadsides

1,000

Cynosurus cristatus, C.

echinatus dogtail grasses

Annual NL M1

0.1 acres

1 site ACECs, FMAs, Cook's lomatium critical habitat

Open woodlands, forest edges, roadsides

3,000

Phalaris arundinacea4 reed canarygrass Perennial NL M2

0.1 acres 2 sites

Rogue National Wild and Scenic River Corridor, ACECs, where aggressive populations threaten Bureau Sensitive species

River floodplains, wet meadows, lake shores 25

Taeniatherum caput-medusae medusahead rye

Annual B list M1 50.8 acres 51 sites

ACECs, FMAs, Cook's lomatium critical habitat

Roadsides, meadows, rangeland, chaparral, open woodlands including serpentine substrates

5,000

1. Noxious weeds are classified by the ODA for the purpose of prioritizing and implementing noxious weed control projects:

A List: A weed of known economic importance that occurs in the state in small enough infestations to make eradication or containment possible.

B List: A weed of economic importance which is regionally abundant, but which may have limited distribution in some areas.

NL: Not listed.

2. Species of invasive plants that would be treated in the same manner have been arranged into treatment groups. Further information about treatment methods for these treatment groups can be found in Table 2-12, Treatment Key. Treatment group information for A-ALT can be found in Table 2-13, Treatment Key – Submerged and Floating Aquatics.

3. Treatment acres include both Category I acres and Category II acres. For more information, see the Treatment Acres sub-section in the Category II, Unmapped Invasive Plant Sites section.

4. Acres / sites may be incorrect, as it is difficult to distinguish between native and nonnative populations. Native populations would not be treated.

5. Fritillaria Management Areas are further described in the U.S. Fish and Wildlife Service’s Recovery Plan (USDI 2003a)