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Plants of Petrie Island

by Christine Hanrahan (2003)

 

An initial list was compiled by Albert Dugal during a one-day visit in 1977. Additional observations were made by other naturalists in the 1980's and 1990's. This has resulted in an impressive but preliminary list of plants. Twenty-eight significant native plant species occur here. Significant species are those regarded as regionally or provincially rare or sparse.  These species are shown in boldface.

 

TREES

Acer saccharinum ´ A. rubrum Silver

Maple ´ Red Maple

Carya cordiformis

Bitternut Hickory

Celtis occidentalis

Hackberry

Fraxinus nigra

Black Ash

Fraxinus pennsylvanica

Red Ash

Juglans cinerea

Butternut

Populus deltoides

Eastern Cottonwood

Populus deltoides ´ P. grandidentata

Eastern Cottonwood ´ Large-toothed Aspen

Quercus macrocarpa

Bur Oak

*Robinia pseudoacacia

Black Locust

Salix nigra

Black Willow

Tilia americana

Basswood

Ulmus americana

White Elm

Ulmus rubra ?

Slippery Elm

SHRUBS

Alnus rugosa (=A. incana)

Speckled Alder

Cornus obliqua

Silky Dogwood

Cornus rugosa

Round-leaved Dogwood

Cornus stolonifera

Red-osier Dogwood

Ilex verticillata

Winterberry

*Lonicera tatarica  Tartarian

Honeysuckle

Myrica gale

Sweet Gale

Physocarpus opulifolius

Ninebark

*Rhamnus cathartica

Common Buckthorn

*Rhamnus frangula

Glossy Buckthorn

Rhus radicans

Poison Ivy

Rhus typhina

Staghorn Sumac

Rosa sp.

Rose

Rubus allegheniensis

Common Blackberry

Rubus odoratus

Purple-flowering Raspberry

Salix spp.

Willow species

Sambucus canadensis

Elderberry

Spiraea latifolia

Broad-leaved Meadowsweet

Staphylea trifolia

Bladdernut Shrub

Toxicodendron radicans

Climbing Poison Ivy

Viburnum sp.

Viburnum

Viburnum trilobum

High-bush Cranberry

 VINES

Amphicarpaea bracteata

Hog Peanut

Apios tuberosa

Groundnut

Celastrus scandens

Bittersweet

Clematis virginiana

Virgin's Bower

*Humulus lupulus

Hops

Menispermum canadense

Moonseed

Parthenocissus quinquefolia

Virginia Creeper

Sicyos angulatus

One-seeded Bur Cucumber

Smilax herbacea

Carrion Flower

Vitis riparia

Riverbank Grape

HERBACEOUS PLANTS

*Achillea millefolium

Yarrow

*Agropyron repens

Couch Grass

Agrostis perennans

Autumn Bent Grass

Alisma triviale

Water Plantain

*Alliaria officinalis

Garlic Mustard

Allium canadense

Canada Onion

Ambrosia artemisiifolia

Common Ragweed

Anemone canadensis

Canada Anemone

Apocynum androsaemifolium

Spreading Dogbane

Apocynum cannabinum?

Indian Hemp

*Arctium major

Burdock

Arisaemum triphyllum

Jack-in-the-pulpit

*Artemisia biennis

Biennial Wormwood

*Artemisia vulgaris

Common Mugwort

Asclepias syriaca

Common Milkweed

Asclepias incarnata

Swamp Milkweed

Aster lanceolatus

Panicled Aster

Aster novae-angliae

New England Aster

Aster umbellatus

Flat-topped Aster

Astragalus canadensis

Milk-vetch

Bidens cernua

Bur-marigold

Bidens frondosa

Beggarticks

Boehmeria cylindrica

False Nettle

*Butomus umbellatus

Flowering Rush

Calamagrostis canadensis

Canada Blue Joint

*Campanula rapunculoides

Creeping Bellflower

Cardamine pensylvanica

Pennsylvania Bittercress

Carex bromoides

Brome-like Sedge

Carex folliculata

Folliculate Sedge

Carex lupulina

Hop Sedge

Carex typhina

Cattail Sedge

Chelone glabra

Turtlehead

Chenopodium glaucum

Oak-leaved Goosefoot

*Chrysanthemum leucanthemum

Oxeye Daisy

*Cichorium intybus

Chicory

Cicuta bulbifera

Bulb-bearing Water Hemlock

Circaea quadrisulcata

Enchanter's Nightshade

*Cirsium arvense

Canada Thistle

*Cirsium vulgare

Bull Thistle

*Commelina communis

Asiatic Dayflower

Convolvulus sp.

Bindweed

*Coronilla varia

Crown Vetch

Cyperus acuminatus

 

Cyperus diandrus 

Two-stamened Cyperus

Cyperus odoratus    (incl. C. engelmanii)

Engelmann's Umbrella-sedge

Cyperus rivularis

River Cyperus

Cyperus strigosus

Strigos Cyperus

Danthonia spicata

Poverty Grass

*Daucus carota

Queen Anne's Lace

Desmodium canadense

Showy TickTrefoil

*Digitaria ischaemum

Small Crab Grass

Dulichium arundinaceum 

Three-way Sedge

Echinochloa microstachya

 

Echinochloa wiegandii

 

Eleocharis obtusa

Blunt Spike-rush

Elodea canadensis

Canada Water-weed

Elymus virginicus

Wild Rye

Epilobium angustifolium

Fireweed

Epilobium glandulosum

Northern Willow Herb

Epilobium strictum 

Downy Willow Herb

*Epipactis helleborine

Helleborine

Eragrostis hypnoides

Moss-like Love Grass

*Eragrostis minor

 

*Eragrostis pectinacea Pectinate

Love Grass

Erechtites hieracifolia

Pilewort

Erigeron annuus

Daisy Fleabane

Erigeron (Conyza) canadensis

Horseweed

*Erysimum (cheiranthoides?)

Wormseed Mustard

Eupatorium maculatum

Spotted Joe-pye Weed

Eupatorium rugosum

White Snakeroot

Fimbristylis autumnalis

Autumn Fimbristylis

Fragaria virginiana

Wild Strawberry

*Galega officinalis

Goat's Rue

Galium aparine

Cleavers

Galium obtusum

Wild Madder

Galium triflorum

  Sweet-scented Bedstraw

Gerardia tenuifolia  

Slender Gerardia

Geum sp.

Geum

*Glechoma hederacea

Ground Ivy

Glyceria borealis

Northern Manna Grass

Glyceria striata

Fowl Manna Grass

Gnaphalium uliginosum

Low Cudweed

*Helianthus tuberosus

Jerusalem Artichoke

*Hydrocharis morsus-ranae uropean  Frog-bit

 

Hypericum virginicum.

Johnswort Marsh St

*Hypericum perforatum