Invasive Species ID Powerpoint

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Invasive Species ID: 

Invasive Species ID The Nature Conservancy September 2007

Purple Loosestrife (Lythrum salicaria) : 

Purple Loosestrife (Lythrum salicaria)

Slide3: 

Height/size: 2-8 feet

Slide4: 

Flowers Showy magenta 5-6 petals on spike Stems 30-50 stems from one root, millions of seeds

Japanese\Common Barberry (Berberis thunbergii \ vulgaris: 

Japanese\Common Barberry (Berberis thunbergii \ vulgaris

Flowers: 

Flowers Yellow, 4 petals in May Red oblong berries singly or in clusters.

Garlic Mustard (Alliaria petiolata): 

Garlic Mustard (Alliaria petiolata)

Slide9: 

Height/size: 5” – 4’ Leaf structure: Kidney shaped/ triangular Alternate Sharply toothed

Flowers: 

Flowers White, small, clustered at the top 4 inch white petals Leaves and flowers odor of garlic

Japanese Knotweed (Fallopia japonica): 

Japanese Knotweed (Fallopia japonica)

Slide12: 

Height/size: 3-9 feet tall Leaf structure: Large hollow stem Alternate Leaves are 2-6” long Broadly oval with square bases, pointed tips

Flowers: 

Flowers Greenish white clusters along stem Late August

Russian Olive (Elaeagnus angustifolia): 

Russian Olive (Elaeagnus angustifolia)

Slide15: 

Height/size: large shrub-tree Leaf structure: Simple Alternate Oblong

Flowers: 

Flowers

Fruits & Thorns: 

Fruits & Thorns ¼” long, and pulpy Red colored, thorns are alternate and reddish

Multiflora Rose/ Rambler Rose (Rosa multiflora) : 

Multiflora Rose/ Rambler Rose (Rosa multiflora)

Slide19: 

Height/size: shrub, up to 6 feet Leaf Structure: Alternate compound 7-9 leaflets Thorny arching stems

Flowers & Fruits: 

Flowers & Fruits Cluster of white to pink, 5 petals Fragrant, blooms June- July Fruits- pulpy, rose hips

Oriental Bittersweet (Celastrus orbiculatus): 

Oriental Bittersweet (Celastrus orbiculatus)

Slide22: 

Height/size: vine up to 50 feet Leaf structure: Oval, with a point Alternate, 1-5 inches long

Flowers & Fruits: 

Flowers & Fruits Small greenish/yellow Along axils of leaves Fruit- pea sized capsules, change from green to bright yellow, to red berry

Glossy Buckthorn (Frangula alnus): 

Glossy Buckthorn (Frangula alnus)

Slide25: 

Height/size: small shrub – 20 feet Leaf Structure: Alternate to nearly opposite Oval ; fine toothed 1-2 inches long Glossy leaves

Flowers & Fruits: 

Flowers & Fruits Greenish-yellow flowers 5 petals (common buckthorn has only 4) Among leaves Red berries turn black when ripe

Common Buckthorn (Rhammus cathartica): 

Common Buckthorn (Rhammus cathartica)

Slide28: 

Height/size: up to 20 feet Leaf structure: Alternate, dull green leaves Oval, fine toothed, 1-2 inches long Direct veins curve towards leaf tip, glossy

Flowers & Fruit: 

Flowers & Fruit Greenish-yellow flowers 4 petals, among leaves Fruits- dark blue, clustered along stem

Fruits continued…..: 

Fruits continued…..

Black Locust (Robinia pseudoacacia): 

Black Locust (Robinia pseudoacacia)

Slide33: 

Height/size: tree – up to 100 ft.

Leaf Structure :: 

Leaf Structure : Alternate Compound leaflets in pairs

Flowers: 

Flowers Showy fragrant white with yellow centers 1 inch long, pea-like Hanging in clusters

Seeds : 

Seeds Brown flat pods 2-4 inches long 4-8 seeds red-brown

Twigs & Bark: 

Twigs & Bark Gray to light brown Thick; heavily ridged Twigs have thorns in pairs at leaf scars

References: 

References www.invasive.org http://www.nps.gov/plants/alien/fact/rhca1.htm http://www.extension.umn.edu/yardandgarden/ygbriefs.html