Fact Sheets - NS Invasive Species Council

Beech Bark Disease

Fact Sheet INSECT & FUNGUS Cryptococcus fagisuga & Neonectria spp. Description Disfigured Beech trees are the result of a combination of the exotic Beech Scale

Beech Leaf-Mining Weevil

Fact Sheet INSECT Orchestes fagi Description The Beech Leaf-Mining Weevil is an insect pest of Beech (Fagus spp.) trees. Adult weevils are 2–3 mm long,

Blue Sedge

Fact Sheet vascular plant Carex flacca Description Cool-season sedge grow to a height of 30-45 cm and a width of 30-45 cm, forming a dense

Carolina Fanwort

Fact Sheet Vascular Plant Cabomba caroliniana Description Bottom-rooted, submersed aquatic plant. Stems usually 1-2 m but up to 10 m long. Underwater leaves opposite, fan-like

Chain Pickerel

Fact Sheet Freshwater Fish Esox niger | Other Names: Pickerel, Water Wolf, Pike Description Long, narrow, torpedo-shaped, green body with a darker back and white

Coffin Box Bryozoan

Fact Sheet MARINE ANIMAL Membranipora membranacea | Other Names: Lacy Crust Bryozoan, Kelp Lace Bryozoan Description The Coffin Box Bryozoan is a marine organism that

Colonial Tunicates

Fact Sheet MARINE ANIMAL Didemnum, Diplosoma, Botryllus, Botrylloides spp. | Other Name: Sea Squirt Description Colonial Tunicates are small marine filter-feeding animals, sometimes referred to

Common Reed

Fact Sheet Vascular Plant Phragmites australis ssp. australis | Elephant Grass, Giant Reedgrass Description Very tall, stout grass, often reaching heights of 3 m or

Dog Strangling Vine

Fact Sheet Vascular Plant Vincetoxicum rossicum & V. nigrum | Pale Swallowwort, Black Swallowwort Description Herbaceous vine growing 1-2 metres high and twining onto plants

Dutch Elm Disease

Fact Sheet Insect & Fungus Hylurgopinus, Scotylus, & Ophiostoma spp Description Dead and dying White Elm trees. Results from several different microscopic sac fungi (all

Emerald Ash Borer

Fact Sheet INSECT Agrilus planipennis Description The Emerald Ash Borer is a narrow, elongated beetle that is 8.5–14 mm long, and 3.1 –3.5 mm wide.

Garlic Mustard

Fact Sheet VASCULAR PLANT Alliaria petiolata Description Herbaceous biennial, with vegetative rosette in the first year. Leaves 2-12 cm wide, dark green, kidney shaped, smelling

Giant Hogweed

Fact Sheet VASCULAR Heracleum mantegazzianum Description A perennial member of the carrot family which can grow to exceed 5m in height. Basal leaves lobed, coarsely

Glossy Buckthorn

Fact Sheet Vascular Plant Frangula alnus | European Alder Buckthorn Description Single or many stemmed shrub or small tree, reaching heights of 6 m. Leaves

Green Crab

Fact Sheet CRUSTACEAN Carcinus maenas | Other Name: European Green Crab Habitat & Impact Green Crabs are common in shallow water of salt marshes, beaches

Hemlock Woolly Adelgid

Fact Sheet INSECT, TREE PEST Adelges tsugae Description Hemlock Woolly Adelgid is an aphid-like insect that parasitizes Eastern Hemlock (Tsuga canadensis) trees. The first generation

Himalayan Blackberry

Fact Sheet Vascular Plant Rubus bifrons Description Himalayan Blackberry is a very large blackberry that produces robust arching 5-angled canes that reach up to 3

Japanese Knotweed

Fact Sheet VASCULAR PLANT Reynoutria japonica | Other Names: Mexican Bamboo, Fleeceflower Description Japanese Knotweed is a woody-stemmed herbaceous perennial 1-3 m tall, with annual

Multiflora Rose

Fact Sheet VASCULAR PLANT Rosa multiflora | Common names: Multiflower Rose, Rambler Rose Description Multiflora Rose is a woody shrub that grows up to 3

Norway Maple

Fact Sheet VASCULAR PLANT Acer platanoides Description Norway Maple is a large deciduous tree that grows up to 18 m tall with a large crown.

Oriental Bittersweet

Fact Sheet VASCULAR PLANT Celastrus orbiculatus | Asian Bittersweet Description Deciduous woody vine or trailing shrub. Can reach heights of over 18 m. Leaves simple,