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Ojibway's Species at Risk

 Slender Bush-clover by K. Cedar

This list contains over 160 species of provincially rare plants and animals recorded from the Ojibway Prairie Complex and neighbouring areas of the City of Windsor and town of LaSalle. No other site in Ontario supports such a concentration of rare species. Plants designated endangered, threatened or extirpated in Canada are noted in the list. Phlox pilosa and Platanthera ciliaris that are known from old literature reports without the support of specimens are excluded from this list. Eleven species have not been recorded in the past 25 years. Several insect species and ten plant species found at Ojibway (such as the Slender Bush-clover, Lespedeza virginica, shown in the photograph) are not known from elsewhere in Ontario or Canada.

Provincial status is derived from the Natural Heritage Information Centre: Rare Vascular Plants of Ontario (Srank of S1, S2 or S3).

Click here for our Species at Risk brochure.

119 Provincially Rare Plant Species Common Name
local status and (COSEWIC STATUS)

Agalinis purpurea Large Purple False Foxglove
locally common: moist, sandy open areas
Agalinis skinneriana Pale Purple False Foxglove
rare: found at a single site in LaSalle (ENDANGERED)
Agrimonia parviflora Small-flowered Agrimony
common: prairies and savannas
Aletris farinosa Colicroot
uncommon: low, open, sandy sites (THREATENED)
Ammannia robusta Scarlet Ammannia
rare: found at one moist, open sandy area (ENDANGERED)
Amorpha fruiticosaIndigo Bush
rare: found at one site along the Detroit River (considered native only on Pelee Island)
Aristida longespicathree-awn grass
rare: open, sandy prairies
Aristida longespica var. geniculatathree-awn grass
rare: open sandy prairies
Aristida purpurascensArrow Feather Three-awn
uncommon: low, open, sandy prairies. Known in Canada only from the Ojibway area.
Asclepias hirtellaTall Green Milkweed
rare: found at a single site. Known in Canada only from the Ojibway area.
Asclepias purpurascensPurple Milkweed
uncommon: wet prairies and savannas
Asclepias sullivantiiPrairie Milkweed (photo)
uncommon: wet prairie sites and old fields
Asclepias verticillataWhorled Milkweed
sporadic occurrences
Asclepias viridifloraGreen Milkweed
known from an old record (pre 1925)
Aureolaria flavaSmooth Yellow False-foxglove
uncommon: savanna and open woodland
Aureolaria pediculariaFern-leaved False-foxglove
rare: open oak woodland
Baptisia tinctoriaYellow Wild Indigo
uncommon: prairies and savannas
Bidens coronataSouthern Tickseed
known from an old record (pre 1925)
Bulbostylis capillarisHair-like Bulbostylis
rare: disturbed sandy openings
Carex bicknelliiBicknell's Sedge
uncommon: prairies
Carex conoideaPrairie Gray Sedge
uncommon: prairies
Carex frankiiBristly Cattail Sedge
Carex gracilescensSlender Wood Sedge
rare: rich woods
Carex gravidaLong-awned Bracted Sedge
known from an old record (pre 1925). Known in Ontario only from the Ojibway area.
Carex meadiiMead's Stiff Sedge
rare: prairies
Carex muskingumensisSwamp Oval Sedge
rare: moist woods
Carex squarrosaNarrow-leaved Cattail Sedge
rare: woodlands
Carex suberectaWedge-fruited Oval Sedge
rare: moist prairies and wetland edges
Carex swaniiDowny Green Sedge
rare: dry, sandy savanna and woodland
Carex tetanicaCommon Stiff Sedge
rare: moist prairies
Carya laciniosaBig Shellbark Hickory
rare: moist woods
Carya glabraSweet Pignut Hickory
uncommon: dry savanna and woodland
Castanea dentataAmerican Chestnut
rare: dry woodland, especially Black Oak Heritage Park and Spring Garden (ENDANGERED)
Chimaphila maculataSpotted Wintergreen
rare: oak woodland(THREATENED)
Coreopsis tripterisTall Coreopsis
common: prairies
Cuscuta campestrisField Dodder
Cuscuta cephalanthiButtonbush Dodder
Cuscuta coryliHazel Dodder
Cyperus lupulinusSlender Sand Sedge
Desmodium sessilifoliumSessile-leaved Tick-trefoil
known from an old record in 1901. Known in Canada only from the Ojibway area.
Digitaria cognatumFall Witch Grass
rare: dry sandy prairies
Echinochloa walteriWalter's Barnyard Grass
rare: marshes
Eragrostis spectabilisPurple Love Grass
rare: dry, open, sandy sites
Euonymus atropurpureusBurning Bush
rare: known from a single site, now "developed"
Eupatorium altissimumTall Bonest
uncommon: prairie and old fields (considered native in Ontario only on Pelee Island)
Eupatorium purpureumSweet Joe-pye-weed
uncommon: open moist woodland
Euthamia gymnospermoidesViscid Grass-leaved Goldenrod
uncommon: prairies
Fraxinus profundaPumpkin Ash
rare: moist woods
Galium pilosumHairy Bedstraw
rare: sandy woodland
Gaura biennisBiennial Gaura
uncommon: prairies and roadsides
Geum vernumSpring Avens
rare: moist woods
Gymnocladus dioica Kentucky Coffee-tree
rare: woods (THREATENED)
Heuchera americana Rock-geranium
rare: in LaSalle
Hibiscus moscheutosSwamp Rose Mallow
rare: single site in LaSalle (SPECIAL CONCERN)
Hypericum gentianoidesOrange-grass
rare: damp sandy openings. Not known from elsewhere in Canada.
Hypericum prolificumShrubby St. John's-wort
rare: in prairies
Hypoxis hirsutaYellow Stargrass
common: prairies
Iris lacustrisDwarf lake Iris
known from an old record in 1901. (THREATENED)
Juglans cinereaButternut
Juncus acuminatusSharp-fruit Rush
uncommon: prairies
Juncus biflorusTwo-flowered Rush
uncommon: prairies
Juncus brachycarpusShort-fruited Rush
rare: prairies. Known in Canada only from the Ojibway area.
Juncus greeneiGreene's Rush
common: prairies
Juncus marginatusGrass-leaved Rush
rare: prairies
Koeleria macranthaJune Grass
rare: known from a specimen in 1973.
Krigia bifloraTwo-flowered Cynthia
common: savannas
Lechea minorSmall Pinweed
rare: Known in Canada only from the Ojibway area.
Lechea pulchellaPretty Pinweed
rare: prairies
Lechea villosaHairy Pinweed
common: open sandy sites
Lespedeza virginicaSlender Bush-clover
rare: known only from two sites. Presently known in Canada only from the Ojibway area. (ENDANGERED)
Liatris asperaRough Blazing-star
rare: dry prairies
Liatris spicataDense Blazing-star (photo)
common: moist prairies (THREATENED)
Liparis lilifoliaPurple Twayblade Orchid
rare: oak woodland (THREATENED)
Lithospermum canescensHoary Puccoon (photo)
uncommon: sandy prairies
Ludwigia alternifoliaSeedbox
rare: prairies
Ludwigia polycarpaMany-fruited False Loosestrife
uncommon: wet prairie, ditches
Lupinus perennisWild Lupine
rare: open oak woodland
Lythrum alatumWinged Loosestrife
common: wet prairies
Morus rubraRed Mulberry
rare: LaSalle Woods (ENDANGERED)
Nelumbo luteaAmerican Lotus
known from a 1911 record along Detroit River.
Nuphar advenaYellow Pond-lily
rare: wetlands
Nyssa sylvaticaBlack Gum
rare: dry oak woodland
Oenothera pilosellaPrairie Sundrops
rare: known only from a single site.
Oxypolis rigidiorStiff Cowbane
uncommon: wet prairies
Panicum columbianum var. commonsianum Common's Panic Grass
known from an old record in 1955.
Panicum meridionale Mat Panic Grass
rare: open, sandy woods
Panicum sphaerocarponRound-fruited Panic Grass
common: prairies
Panicum villosissiumWhite-haired Panic Grass
uncommon: prairies
Paspalum setaceumSlender Paspalum
rare: open, sandy prairies
Platanthera flava var herbiolaTubercled Orchid
rare: damp woodland edge
Platanthera leucophaeaE. Prairie White-fringed Orchid
rare: wet prairies (ENDANGERED)
Polygala cruciataCrossleaf Milkwort
known from an old record in 1894. Known in Canada only from the Ojibway area.
Polygala incarnataPink Milkwort (photo)
rare: sandy prairies. Known in Canada only from Ojibway and Walpole Is. (ENDANGERED)
Polygonum erectumErect Knotweed
known from an old record (pre 1925)
Polygonum tenueSlender Knotweed
rare: dry, sandy prairies
Pycnanthemum verticillatum var. pilosumHairy Mountain Mint
rare: savannas
Quercus palustrisPin Oak
common: moist woods and savannas
Quercus shumardiShumard Oak
rare: moist woods (SPECIAL CONCERN)
Ratibida pinnataGray-headed Coneflower
common: prairies
Rhus copallinaWinged Sumac
rare: open oak woodland
Rosa setigeraPrairie Rose
uncommon: open woods and thickets (SPECIAL CONCERN)
Scirpus clintoniiClinton's Club-rush
rare: sandy, open prairies
Scleria triglomerataTall Nut-rush
uncommon: sandy, open prairies
Scleria paucifloraFew-flowered Nut-rush
rare: sandy, open prairies. Known in Canada only from the Ojibway area.
Senecio plattensisPrairie Ragwort
common: wet prairies
Silphium terebinthinceumPrairie Dock
common: prairies
Sisyrinchium albidumWhite Blue-eyed Grass
common: prairies
Solidago riddelliiRiddell's Goldenrod
uncommon: wet prairies (SPECIAL CONCERN)
Solidago rigidaStiff-leaved Goldenrod (photo)
common: dry prairies
Spiranthes magnicamporumGreat Plains Ladies'-tresses
uncommon: prairies
Sporobolus asperRough Dropseed
uncommon: prairies and roadsides
Stophostyles helvolaTrailing Wild Bean
uncommon: prairies and old fields
Symphyotrichum (Aster) dumosum Bushy Aster
uncommon: open, sandy prairies
Symphyotrichum (Aster) praealtusWillow Aster
uncommon: damp prairies and old fields (ENDANGERED)
Thalictrum revolutumWaxy Meadow-rue
rare: sandy, open woods
Tradescantia ohioensis Ohio Spiderwort (photo)
common: prairies and savannas
Verbesina giganteaWingstem
known from an old record in 1885.
Vernonia giganteaTall Ironweed
status uncertain: prairies, savannas and old fields
Vernonia missouricaMissouri Ironweed (photo)
common: prairies, savannas and old fields
Veronicastrum virginicumCulver's Root (photo)
common: prairies and savannas
Vitis labruscaFox Grape
rare: (may not be native)

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Molluscs (poorly studied in area)
Mesodon pennsylvanicus (Proud Globelet) S1
Mesodon zaletus (Toothed Globe) S1S2


Insect diversity is very high at Ojibway (likely over 3000 species!) and very few species have been reviewed by COSEWIC or Ontario. Visit our insect page for more information. A few examples of provincially rare (S1, S2, S3 ranking) species include:

Archilestes grandis giant spreadwing (only location for Canada)
Enallagma aspersum azure bluet S3
Enallagma basidens double-striped bluet S3
Ischnura hastata citrine forktail S2
Aeshna clepsydra mottled darner S3
Epiaeschna heros swamp darner S2S3
Gomphus vastus cobra clubtail S1
Gomphus graslinellus pronghorn clubtail S2
Progomphus obscurus common sanddragon S1
Stylurus notatus elusive clubtail S2
Macromia taeniolata royal river cruiser S1
Celithemis eponina halloween pennant S3
Libellula semifasciata painted skimmer S2
Libellula vibrans great blue skimmer S1
Perithemis tenera eastern amberwing S3
Neoxabea bipunctata two-spotted tree-cricket S1?(photo)
Dicromorpha viridis short-winged green grasshopper S1?
Microcentrum rhombifolium angle-winged katydid S2S3
Melanoplus walshii Scudder Walsh's grasshopper S3S4
Melanoplus scudderi scudderi (Uhler) Scudder's short-winged grasshopper S1?
Anaxipha exigua (Say) Say's bush cricket S2S4
Oecanthus exclamationis Davis tree cricket
Myrmecophilus pergandei Bruner eastern ant cricket
Chariesterus antennator euphorbia bug S1S2 (tallgrass species)
Cuerna fenestella S1S2 (only location in Ontario)
Neokolla heiroglyphica (only location for Canada)
Delphacodes waldeni S1S2 (only location for Canada)
Thorybes bathyllus southern cloudywing S2S3
Papilio cresphontes giant swallowtail S2
Erynnis brizo sleepy duskywing S1
Erynnis baptisiae wild indigo dusky wing S1
Euphyes dukesi Duke's skipper S2
Achalarus lyciades hoary edge skipper SU
Poanes massasoit mulberry wing S3
Satyrium caryaevorum hickory hairstreak S3S4
Strymon melinus grey hairstreak S3
Asterocampa celtis hackberry emperor S2
Asterocampa clyton tawny emperor S2S3
Danaus plexippus monarch (SPECIAL CONCERN)

Catocala connubialis connubial underwing ?S1?
Catocala praeclara praeclara underwing S3S4
Papaipema sciata culver's root borer ?S1?
Faronta rubripennis pink streak ?S1? (photo)
Mydas clavatus (Diptera: Mydidae) mydas fly
Loxocera ojibwayensis (Diptera: Psilidae) endemic to Ojibway!


Lampropeltis triangulum Milksnake (SPECIAL CONCERN)
Elaphe gloydi Eastern Fox Snake(ENDANGERED) (photo)
Thamnophis butleri Butler's Garter Snake (ENDANGERED)
Sistrurus catenatus Eastern Massasauga Ratttlesnake (ENDANGERED)
Eumeces fasciatus Five-lined Skink extirpated (ENDANGERED POPULATION)
Chelydra serpentina Snapping Turtle (SPECIAL CONCERN)
Emydoidea blandingii Blanding's Turtle (THREATENED)
Graptemys geographicaNorthern Map Turtle (SPECIAL CONCERN) LaSalle
Sternotherus odoratus Stinkpot (SPECIAL CONCERN) LaSalle
Apalone spinifera Spiny Softshell Turtle (THREATENED) LaSalle


Haliaeetus leucocephalus Bald Eagle (SPECIAL CONCERN) LaSalle
Colinus virginianus Northern Bobwhite extirpated (ENDANGERED)extirpated
Tympanuchus cupido Greater Prairie-Chicken (EXTIRPATED)
Ectopistes migratorius Passenger Pigeon (EXTINCT)
Chordeiles minor Common Nighthawk (SPECIAL CONCERN)
Antrostomus vociferus Whip-poor-will(THREATENED) migrant sp.
Chaetura pelagica Chimney Swift (THREATENED)
Melanerpes erythrocephalus Red-headed Woodpecker (THREATENED)
Falco peregrinus Peregrine Falcon (NOT AT RISK, Nov 2017)
Contopus virens Eastern Wood-pewee (SPECIAL CONCERN)
Empidonax virescens Acadian Flycatcher (ENDANGERED)
Contopus cooperi Olive-sided Flycatcher (THREATENED)migrant sp.
Hylocichla mustelina Wood Thrush (THREATENED)
Hirundo rustica Barn Swallow (THREATENED)
Riparia riparia Bank Swallow (THREATENED 2013)
Baeolophus bicolor Tufted Titmouse(S2S3)
Vireo griseu White-eyed Vireo(S2B,SZN)
Parkesia motacilla Louisiana Waterthrush(THREATENED) migrant sp.
Setophaga cerulea Cerulean Warbler(THREATENED) migrant sp.
Protonotaria citrear Protonotary Warbler(ENDANGERED) migrant sp.
Wilsonia citrina Hooded Warbler (SPECIAL CONCERN)
Cordellina canadensis Canada Warbler(THREATENED) migrant sp.
Icteria virens Yellow-breasted Chat (ENDANGERED)
Euphagus carolinus Bobolink (Special Concern)
Setophaga cerulea Rusty Blackbirdr(THREATENED) migrant sp.
Sturnella magna Eastern Meadowlark (THREATENED)


Lasionycteris noctivagans Silver-haired Bat S4 (ENDANGERED)
Lasiurus borealis Eastern Red Bat S4 (ENDANGERED)
Lasiurus cinereus Hoary Bat S4 (ENDANGERED)
Myotis lucifugus Little Brown Bat (ENDANGERED)
Urocyon cinereoargenteus Grey Fox (THREATENED)

Please cite this page as:
Pratt, Paul D. 2024. Provincially Rare Vascular Plants and Wildlife of the Ojibway Prairie Complex (Version FEB2024). Ojibway Nature Centre Home Page. Department of Parks, Windsor, Ontario. http://www.ojibway.ca/raresp.htm

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