Animals, Plants, & Natural Communities
Rare Vascular Plants
Only species from the Natural Heritage Inventory Working List are displayed for this taxa group. See the Working List Key for an explanation of the column headings. Note: species with a "W" under Actively Tracked by NHI are "Watch List" species; data collected for these species are not currently stored in the NHI database.
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Scientific Name |
Common Name | Global Rank |
State Rank |
Federal STATUS |
WI STATUS |
SGCN | Actively Tracked by NHI |
|---|---|---|---|---|---|---|---|
| Acer pensylvanicum | Striped Maple | G5 | S1 | SC | Y | ||
| Aconitum noveboracense | Northern Wild Monkshood | G3 | S2 | LT | THR | Y | |
| Adlumia fungosa | Climbing Fumitory | G4 | S2 | SC | Y | ||
| Adoxa moschatellina | Musk-root | G5 | S2 | THR | Y | ||
| Agalinis gattingeri | Roundstem Foxglove | G4 | S3 | THR | Y | ||
| Agalinis skinneriana | Pale False Foxglove | G3G4 | S2 | END | Y | ||
| Agastache nepetoides | Yellow Giant Hyssop | G5 | S3 | THR | Y | ||
| Agrimonia parviflora | Swamp Agrimony | G5 | S1S2 | SC | Y | ||
| Amerorchis rotundifolia | Round-leaved Orchis | G5 | S2 | THR | Y | ||
| Ammannia robusta | Scarlet Loosestrife | G5 | S1 | SC | W | ||
| Anemone caroliniana | Carolina Anemone | G5 | S1 | END | Y | ||
| Anemone multifida var. hudsoniana | Early Anemone | G5T5 | S1 | END | Y | ||
| Aplectrum hyemale | Putty Root | G5 | S2S3 | SC | Y | ||
| Arabis missouriensis var. deamii | Deam's Rockcress | G5?QT3?Q | S2 | SC | Y | ||
| Arabis shortii | Short's Rock-cress | G5 | S2 | SC | Y | ||
| Arethusa bulbosa | Swamp-pink | G4 | S3 | SC | Y | ||
| Aristida dichotoma | Shinners Three-awned Grass | G5 | S1 | SC | Y | ||
| Armoracia lacustris | Lake-cress | G4? | S1 | END | Y | ||
| Artemisia dracunculus | Dragon Wormwood | G5 | S2 | SC | Y | ||
| Artemisia frigida | Prairie Sagebrush | G5 | S2 | SC | Y | ||
| Asclepias lanuginosa | Woolly Milkweed | G4? | S1 | THR | Y | ||
| Asclepias ovalifolia | Dwarf Milkweed | G5? | S3 | THR | Y | ||
| Asclepias purpurascens | Purple Milkweed | G5? | S3 | END | Y | ||
| Asclepias sullivantii | Prairie Milkweed | G5 | S2S3 | THR | Y | ||
| Asplenium pinnatifidum | Lobed Spleenwort | G4 | S1 | THR | Y | ||
| Asplenium trichomanes | Maidenhair Spleenwort | G5 | S3 | SC | Y | ||
| Asplenium viride | Green Spleenwort | G4 | S1 | END | Y | ||
| Aster dumosus var. strictior | Bushy Aster | G5T4 | S1 | SC | Y | ||
| Aster furcatus | Forked Aster | G3 | S3 | THR | Y | ||
| Aster longifolius | Long-leaved Aster | G5 | S1 | SC | Y | ||
| Astragalus alpinus | Alpine Milkvetch | G5 | S1 | END | Y | ||
| Astragalus crassicarpus | Ground-plum | G5 | S2 | END | Y | ||
| Astragalus neglectus | Cooper's Milkvetch | G4 | S1 | END | Y | ||
| Baptisia tinctoria | Yellow Wild-indigo | G5 | S1 | SC | Y | ||
| Bartonia paniculata | Twining Screwstem | G5 | S1 | SC | Y | ||
| Bartonia virginica | Yellow Screwstem | G5 | S3 | SC | Y | ||
| Besseya bullii | Kitten Tails | G3 | S3 | THR | Y | ||
| Botrychium campestre | Prairie Dunewort | G3G4 | S1 | END | Y | ||
| Botrychium lunaria | Moonwort Grape-fern | G5 | S1S2 | END | Y | ||
| Botrychium minganense | Mingan's Moonwort | G4 | S2 | SC | Y | ||
| Botrychium mormo | Little Goblin Moonwort | G3 | S3 | END | Y | ||
| Botrychium oneidense | Blunt-lobe Grape-fern | G4Q | S2 | SC | Y | ||
| Botrychium pallidum | Pale Moonwort | G3 | S1 | SC | Y | ||
| Botrychium rugulosum | Rugulose Grape-fern | G3 | S2 | SC | Y | ||
| Botrychium spathulatum | Spoon-leaf Moonwort | G3 | S1 | SC | Y | ||
| Cacalia muehlenbergii | Great Indian-plantain | G4 | S2S3 | SC | Y | ||
| Cacalia suaveolens | Sweet-scented Indian-plantain | G4 | S3 | SC | Y | ||
| Cacalia tuberosa | Prairie Indian Plantain | G4G5 | S3 | THR | Y | ||
| Cakile lacustris | American Sea-rocket | G5 | S3 | SC | Y | ||
| Calamagrostis stricta | Slim-stem Small-reedgrass | G5 | S3 | SC | Y | ||
| Calamintha arkansana | Low Calamint | G5 | S2 | SC | Y | ||
| Calamovilfa longifolia var. magna | Sand Reedgrass | G5T3T5 | S2 | THR | Y | ||
| Callirhoe triangulata | Clustered Poppy-mallow | G3 | S3 | SC | Y | ||
| Callitriche hermaphroditica | Autumnal Water-starwort | G5 | S2 | SC | Y | ||
| Callitriche heterophylla | Large Water-starwort | G5 | S1 | THR | Y | ||
| Calopogon oklahomensis | Oklahoma Grass-pink | G4? | SH | SC | Y | ||
| Caltha natans | Floating Marsh-marigold | G5 | S1 | END | Y | ||
| Calylophus serrulatus | Yellow Evening Primrose | G5 | S2 | SC | Y | ||
| Calypso bulbosa | Fairy Slipper | G5 | S3 | THR | Y | ||
| Camassia scilloides | Wild Hyacinth | G4G5 | S2 | END | Y | ||
| Cardamine maxima | Large Toothwort | G5 | S1 | SC | Y | ||
| Cardamine pratensis | Cuckooflower | G5 | S3 | SC | Y | ||
| Carex artitecta | Dry Woods Sedge | G5 | S1 | SC | Y | ||
| Carex assiniboinensis | Assiniboine Sedge | G4G5 | S3 | SC | Y | ||
| Carex backii | Rocky Mountain Sedge | G4 | S1 | SC | Y | ||
| Carex capillaris | Hair-like Sedge | G5 | S2 | SC | Y | ||
| Carex careyana | Carey's Sedge | G4G5 | S1 | THR | Y | ||
| Carex concinna | Beautiful Sedge | G4G5 | S1 | THR | Y | ||
| Carex crawei | Crawe Sedge | G5 | S3 | SC | Y | ||
| Carex crus-corvi | Ravenfoot Sedge | G5 | S1 | END | Y | ||
| Carex cumulata | Clustered Sedge | G4? | S2 | SC | Y | ||
| Carex exilis | Coast Sedge | G5 | S1 | THR | Y | ||
| Carex folliculata | Long Sedge | G4G5 | S3 | SC | Y | ||
| Carex formosa | Handsome Sedge | G4 | S2 | THR | Y | ||
| Carex garberi | Elk Sedge | G5 | S2 | THR | Y | ||
| Carex gracilescens | Slender Sedge | G5? | SH | SC | Y | ||
| Carex gynocrates | Northern Bog Sedge | G5 | S3 | SC | Y | ||
| Carex laevivaginata | Smooth-sheath Sedge | G5 | S1 | END | Y | ||
| Carex lenticularis | Shore Sedge | G5 | S2 | THR | Y | ||
| Carex livida var. radicaulis | Livid Sedge | G5T5 | S2 | SC | Y | ||
| Carex longii | Greenish-white Sedge | G5 | SH | SC | Y | ||
| Carex lupuliformis | False Hop Sedge | G4 | S1 | END | Y | ||
| Carex media | Intermediate Sedge | G5T5? | S2 | END | Y | ||
| Carex michauxiana | Michaux Sedge | G5 | S2 | THR | Y | ||
| Carex nigra | Smooth Black Sedge | G5 | S1 | SC | Y | ||
| Carex novae-angliae | New England Sedge | G5 | SH | SC | Y | ||
| Carex pallescens | Pale Sedge | G5 | S3 | SC | Y | ||
| Carex platyphylla | Broad-leaf Sedge | G5 | S2 | SC | Y | ||
| Carex prasina | Drooping Sedge | G4 | S3 | THR | Y | ||
| Carex richardsonii | Richardson Sedge | G4 | S2 | SC | Y | ||
| Carex schweinitzii | Schweinitz's Sedge | G3G4 | S1 | END | Y | ||
| Carex straminea | Straw Sedge | G5 | S1 | SC | Y | ||
| Carex suberecta | Prairie Straw Sedge | G4 | S1 | SC | Y | ||
| Carex swanii | Swan Sedge | G5 | S1 | SC | Y | ||
| Carex sychnocephala | Many-headed Sedge | G4 | S2 | SC | Y | ||
| Carex tenuiflora | Sparse-flowered Sedge | G5 | S3 | SC | Y | ||
| Carex tincta | Tinged Sedge | G4G5 | S1 | SC | Y | ||
| Carex torreyi | Torrey Sedge | G4 | S1 | SC | Y | ||
| Carex vaginata | Sheathed Sedge | G5 | S3 | SC | Y | ||
| Catabrosa aquatica | Brook Grass | G5 | S1 | END | Y | ||
| Ceratophyllum echinatum | Prickly Hornwort | G4? | S2 | SC | Y | ||
| Chaerophyllum procumbens | Spreading Chervil | G5 | S1 | SC | Y | ||
| Cirsium flodmanii | Flodman Thistle | G5 | S1 | SC | Y | ||
| Cirsium hillii | Hill's Thistle | G3 | S3 | THR | Y | ||
| Cirsium pitcheri | Dune Thistle | G3 | S2 | LT | THR | Y | |
| Clematis occidentalis | Purple Clematis | G5 | S3 | SC | Y | ||
| Collinsonia canadensis | Canada Horse-balm | G5 | SH | END | Y | ||
| Commelina erecta var. deamiana | Narrow-leaved Dayflower | G5T5 | S1 | SC | Y | ||
| Conioselinum chinense | Hemlock Parsley | G5 | SH | END | Y | ||
| Corallorhiza odontorhiza | Autumn Coral-root | G5 | S3 | SC | Y | ||
| Coreopsis lanceolata var. lanceolata | Sand Coreopsis | G5TNR | S2 | SC | W | ||
| Coreopsis tripteris | Tall Coreopsis | G5 | S1 | SC | Y | ||
| Cornus drummondii | Northern Roughleaf Dogwood | G5 | S1 | SC | W | ||
| Crotalaria sagittalis | Arrow-headed Rattle-box | G5 | S1 | SC | Y | ||
| Cypripedium arietinum | Ram's-head Lady's-slipper | G3 | S2 | THR | Y | ||
| Cypripedium candidum | Small White Lady's-slipper | G4 | S3 | THR | Y | ||
| Cypripedium parviflorum var. makasin | Northern Yellow Lady's-slipper | G5T4Q | S3 | SC | Y | ||
| Cypripedium reginae | Showy Lady's-slipper | G4 | S3 | SC | Y | ||
| Cystopteris laurentiana | Laurentian Bladder Fern | G3 | S2 | SC | Y | ||
| Dalea villosa var. villosa | Silky Prairie-clover | G5 | S2 | SC | Y | ||
| Dasistoma macrophylla | Mullein Foxglove | G4 | SH | SC | Y | ||
| Deschampsia cespitosa | Tufted Hairgrass | G5 | S2 | SC | Y | ||
| Deschampsia flexuosa | Crinkled Hairgrass | G5 | S3 | SC | Y | ||
| Desmodium canescens | Hoary Tick-trefoil | G5 | S1 | SC | Y | ||
| Diarrhena obovata | Beak Grass | G4G5 | S2 | END | Y | ||
| Didiplis diandra | Water-purslane | G5 | S1 | SC | Y | ||
| Diodia teres var. teres | Buttonweed | G5T5 | S1 | SC | Y | ||
| Diplazium pycnocarpon | Glade Fern | G5 | S2 | SC | Y | ||
| Dodecatheon amethystinum | Jewelled Shooting Star | G4 | S2 | SC | Y | ||
| Draba arabisans | Rock Whitlow-grass | G4 | S2 | SC | Y | ||
| Draba lanceolata | Lanceolate Whitlow-cress | G3G5Q | S1 | END | Y | ||
| Drosera anglica | English Sundew | G5 | S1 | THR | Y | ||
| Drosera linearis | Slenderleaf Sundew | G4 | S1 | THR | Y | ||
| Dryopteris clintoniana | Clinton Woodfern | G5 | SH | SC | Y | ||
| Dryopteris expansa | Spreading Woodfern | G5 | S2 | SC | Y | ||
| Dryopteris filix-mas | Male Fern | G5 | S1 | SC | Y | ||
| Dryopteris fragrans var. remotiuscula | Fragrant Fern | G5T3T5 | S3 | SC | Y | ||
| Echinacea pallida | Pale-purple Coneflower | G4 | S3 | THR | Y | ||
| Echinodorus rostratus | Erect Burhead | G5 | SH | SC | Y | ||
| Eclipta prostrata | Yerba de Tajo | G5 | SH | SC | Y | ||
| Elatine triandra | Longstem Water-wort | G5 | S1 | SC | Y | ||
| Eleocharis compressa | Flat-stemmed Spike-rush | G4 | S2 | SC | Y | ||
| Eleocharis engelmannii | Engelmann Spike-rush | G4G5Q | S1 | SC | Y | ||
| Eleocharis equisetoides | Horse-tail Spikerush | G4 | S1 | SC | Y | ||
| Eleocharis mamillata | Spike-rush | G4? | S1 | SC | Y | ||
| Eleocharis nitida | Slender Spike-rush | G4 | S2 | END | Y | ||
| Eleocharis olivacea | Capitate Spikerush | G5 | S2 | SC | Y | ||
| Eleocharis quadrangulata | Squarestem Spikerush | G4 | S1 | END | Y | ||
| Eleocharis quinqueflora | Few-flower Spikerush | G5 | S2 | SC | Y | ||
| Eleocharis robbinsii | Robbins' Spikerush | G4G5 | S3 | SC | Y | ||
| Eleocharis rostellata | Beaked Spikerush | G5 | S2 | THR | Y | ||
| Eleocharis wolfii | Wolf Spikerush | G3G4 | S1 | END | Y | ||
| Elymus lanceolatus ssp. psammophilus | Thickspike | G5T3 | S2 | THR | Y | ||
| Epilobium palustre | Marsh Willow-herb | G5 | S3 | SC | Y | ||
| Epilobium strictum | Downy Willow-herb | G5? | S2S3 | SC | Y | ||
| Equisetum palustre | Marsh Horsetail | G5 | S2 | SC | Y | ||
| Equisetum variegatum | Variegated Horsetail | G5 | S3 | SC | Y | ||
| Erigenia bulbosa | Harbinger-of-spring | G5 | S1 | END | Y | ||
| Eriophorum alpinum | Alpine Cotton-grass | G5 | S2 | SC | Y | ||
| Eriophorum chamissonis | Russet Cotton-grass | G5 | S2 | SC | Y | ||
| Eupatorium sessilifolium var. brittonianum | Upland Boneset | G5T3T5 | S3 | SC | Y | ||
| Euphorbia commutata | Wood Spurge | G5 | SH | SC | Y | ||
| Euphorbia obtusata | Bluntleaf Spurge | G5 | SH | SC | Y | ||
| Euphorbia polygonifolia | Seaside Spurge | G5? | S2 | SC | Y | ||
| Festuca occidentalis | Western Fescue | G5 | S1 | THR | Y | ||
| Festuca paradoxa | Cluster Fescue | G5 | SH | SC | Y | ||
| Fimbristylis puberula | Hairy Fimbristylis | G5 | S1 | END | Y | ||
| Fraxinus quadrangulata | Blue Ash | G5 | S1 | THR | Y | ||
| Fuirena pumila | Dwarf Umbrella-sedge | G4 | S1 | END | Y | ||
| Galium brevipes | Swamp Bedstraw | G4? | S1S2 | SC | Y | ||
| Galium palustre | Marsh Bedstraw | G5 | S1 | SC | Y | ||
| Gentiana alba | Yellow Gentian | G4 | S3 | THR | Y | ||
| Gentianopsis procera | Lesser Fringed Gentian | G5 | S3 | SC | Y | ||
| Geocaulon lividum | Northern Comandra | G5 | S1 | END | Y | ||
| Geum macrophyllum var. macrophyllum | Large-leaved Avens | G5T5 | S1 | SC | Y | ||
| Geum macrophyllum var. perincisum | Large-leaved Avens | G5T5 | S2 | SC | Y | ||
| Glycyrrhiza lepidota | Wild Licorice | G5 | S1S2 | SC | Y | ||
| Gnaphalium helleri var. micradenium | Catfoot | G4G5T3? | S1 | SC | Y | ||
| Gnaphalium obtusifolium var. saxicola | Cliff Cudweed | G5T2 | S2 | THR | Y | ||
| Gnaphalium sylvaticum | Woodland Cudweed | G4 | S1 | SC | Y | ||
| Goodyera oblongifolia | Giant Rattlesnake-plantain | G5? | S1 | SC | Y | ||
| Gymnocarpium jessoense ssp. parvulum | Northern Oak Fern | G5T4 | S1 | SC | Y | ||
| Gymnocarpium robertianum | Limestone Oak Fern | G5 | S2 | SC | Y | ||
| Gymnocladus dioicus | Kentucky Coffee-tree | G5 | S2 | SC | Y | ||
| Houstonia caerulea | Innocence | G5 | S2 | SC | Y | ||
| Huperzia appalachiana | Appalachian Clubmoss | G4G5 | S1 | SC | Y | ||
| Huperzia porophila | Rock Clubmoss | G4 | S3 | SC | Y | ||
| Huperzia selago | Fir Clubmoss | G5 | S2 | SC | Y | ||
| Hybanthus concolor | Green Violet | G5 | SH | SC | Y | ||
| Hydrastis canadensis | Golden-seal | G4 | S3S4 | SC | W | ||
| Hydrophyllum appendiculatum | Great Water-leaf | G5 | S2S3 | SC | Y | ||
| Hypericum sphaerocarpum | Roundfruit St. John's-wort | G5 | S1S2 | THR | Y | ||
| Iris lacustris | Dwarf Lake Iris | G3 | S3 | LT | THR | Y | |
| Jeffersonia diphylla | Twinleaf | G5 | S3 | SC | Y | ||
| Juglans cinerea | Butternut | G4 | S3? | SC | W | ||
| Juncus marginatus | Grassleaf Rush | G5 | S2 | SC | Y | ||
| Juncus stygius | Moor Rush | G5 | S1 | END | Y | ||
| Juncus vaseyi | Vasey Rush | G5? | S3 | SC | Y | ||
| Lespedeza leptostachya | Prairie Bush-clover | G3 | S2 | LT | END | Y | |
| Lespedeza violacea | Violet Bush-clover | G5 | S2 | SC | Y | ||
| Lespedeza virginica | Slender Bush-clover | G5 | S2 | THR | Y | ||
| Lesquerella ludoviciana | Silver Bladderpod | G5 | S1 | THR | Y | ||
| Leucophysalis grandiflora | Large-flowered Ground-cherry | G4? | S1 | SC | Y | ||
| Liatris punctata var. nebraskana | Dotted Blazing Star | G5T3T5 | S2S3 | END | Y | ||
| Liatris spicata | Marsh Blazing Star | G5 | S3 | SC | Y | ||
| Listera auriculata | Auricled Twayblade | G3G4 | S1 | END | Y | ||
| Listera convallarioides | Broad-leaved Twayblade | G5 | S1 | THR | Y | ||
| Lithospermum latifolium | American Gromwell | G4 | S3 | SC | Y | ||
| Littorella americana | American Shore-grass | G5 | S2 | SC | Y | ||
| Lonicera involucrata | Fly Honeysuckle | G4G5 | S1 | END | Y | ||
| Lycopodiella margueritae | Northern Prostrate Clubmoss | G2 | S1 | SC | Y | ||
| Malaxis monophyllos var. brachypoda | White Adder's-mouth | G4Q | S3 | SC | Y | ||
| Medeola virginiana | Indian Cucumber-root | G5 | S3 | SC | Y | ||
| Melica nitens | Three-flower Melic Grass | G5 | SH | SC | Y | ||
| Melica smithii | Smith Melic Grass | G4 | S1 | END | Y | ||
| Microseris cuspidata | Prairie False-dandelion | G5 | S2 | SC | Y | ||
| Minuartia dawsonensis | Rock Stitchwort | G5 | S1 | SC | Y | ||
| Moehringia macrophylla | Large-leaved Sandwort | G4 | S1 | END | Y | ||
| Muhlenbergia richardsonis | Soft-leaf Muhly | G5 | S1 | END | Y | ||
| Myosotis laxa | Small Forget-me-not | G5 | S2 | SC | Y | ||
| Myriophyllum farwellii | Farwell's Water-milfoil | G5 | S3 | SC | Y | ||
| Napaea dioica | Glade Mallow | G4 | S3 | SC | Y | ||
| Nuphar advena | Yellow Water Lily | G5T5 | S1 | SC | Y | ||
| Nyssa sylvatica | Black Tupelo | G5 | S1S2 | SC | Y | ||
| Onosmodium molle | Marbleseed | G4G5 | S3 | SC | Y | ||
| Ophioglossum pusillum | Adder's-tongue | G5 | S2 | SC | Y | ||
| Opuntia fragilis | Brittle Prickly-pear | G4G5 | S3 | THR | Y | ||
| Opuntia humifusa | Eastern Prickly-pear | G5 | S1S2 | SC | Y | ||
| Orobanche fasciculata | Clustered Broomrape | G4 | S1 | THR | Y | ||
| Orobanche ludoviciana | Louisiana Broomrape | G5 | S1 | END | Y | ||
| Orobanche uniflora | One-flowered Broomrape | G5 | S3 | SC | Y | ||
| Oryzopsis canadensis | Canada Mountain-ricegrass | G5 | S1 | SC | Y | ||
| Osmorhiza chilensis | Chilean Sweet Cicely | G5 | S3 | SC | Y | ||
| Oxytropis campestris var. chartacea | Fassett's Locoweed | G5T1T2 | S1S2 | LT | END | Y | |
| Panax quinquefolius | American Ginseng | G3G4 | S4 | SC | W | ||
| Panicum wilcoxianum | Wilcox Panic Grass | G5 | SH | SC | Y | ||
| Parnassia palustris | Marsh Grass-of-parnassus | G5 | S2 | THR | Y | ||
| Parnassia parviflora | Small-flower Grass-of-parnassus | G4 | S1 | END | Y | ||
| Parthenium integrifolium | American Fever-few | G5 | S3 | THR | Y | ||
| Pediomelum argophyllum | Silvery Scurf Pea | G5 | S1 | SC | Y | ||
| Pediomelum esculentum | Prairie Turnip | G5 | S3 | SC | Y | ||
| Pellaea atropurpurea | Purple-stem Cliff-brake | G5 | S2 | SC | Y | ||
| Penstemon hirsutus | Hairy Beardtongue | G4 | S1 | SC | Y | ||
| Penstemon pallidus | Pale Beardtongue | G5 | S1 | SC | Y | ||
| Petasites sagittatus | Arrow-leaved Sweet-coltsfoot | G5 | S3 | THR | Y | ||
| Phegopteris hexagonoptera | Broad Beech Fern | G5 | S2 | SC | Y | ||
| Phlox bifida | Cleft Phlox | G5? | S1 | SC | Y | ||
| Phlox glaberrima ssp. interior | Smooth Phlox | G5TNR | S2 | END | Y | ||
| Pinguicula vulgaris | Common Butterwort | G5 | S1 | END | Y | ||
| Plantago cordata | Heart-leaved Plantain | G4 | S1 | END | Y | ||
| Platanthera dilatata | Leafy White Orchis | G5 | S3 | SC | Y | ||
| Platanthera flava var. herbiola | Pale Green Orchid | G4T4Q | S2 | THR | Y | ||
| Platanthera hookeri | Hooker Orchis | G4 | S2S3 | SC | Y | ||
| Platanthera leucophaea | Prairie White-fringed Orchid | G2G3 | S2 | LT | END | Y | |
| Platanthera orbiculata | Large Roundleaf Orchid | G5 | S3 | SC | Y | ||
| Platanus occidentalis | Sycamore | G5 | S2 | SC | Y | ||
| Poa paludigena | Bog Bluegrass | G3 | S3 | THR | Y | ||
| Poa sylvestris | Woodland Bluegrass | G5 | S1 | SC | Y | ||
| Poa wolfii | Wolf's Bluegrass | G4 | S1 | SC | Y | ||
| Polanisia jamesii | James Cristatella | G5 | SH | SC | Y | ||
| Polemonium occidentale ssp. lacustre | Western Jacob's Ladder | G5?T1Q | S1 | END | Y | ||
| Polygala cruciata | Crossleaf Milkwort | G5 | S3 | SC | Y | ||
| Polygala incarnata | Pink Milkwort | G5 | S1 | END | Y | ||
| Polystichum acrostichoides | Christmas Fern | G5 | S2 | SC | Y | ||
| Polystichum braunii | Braun's Holly-fern | G5 | S3 | THR | Y | ||
| Polytaenia nuttallii | Prairie Parsley | G5 | S3 | THR | Y | ||
| Potamogeton bicupulatus | Snail-seed Pondweed | G4 | S2S3 | SC | Y | ||
| Potamogeton confervoides | Algae-like Pondweed | G4 | S2 | THR | Y | ||
| Potamogeton diversifolius | Water-thread Pondweed | G5 | S2 | SC | Y | ||
| Potamogeton hillii | Hill's Pondweed | G3 | S1 | SC | Y | ||
| Potamogeton perfoliatus | Water-thread Pondweed | G5 | S1 | SC | W | ||
| Potamogeton pulcher | Spotted Pondweed | G5 | S1 | END | Y | ||
| Potamogeton vaginatus | Sheathed Pondweed | G5 | SH | THR | Y | ||
| Potamogeton vaseyi | Vasey's Pondweed | G4 | S2 | SC | Y | ||
| Prenanthes aspera | Rough Rattlesnake-root | G4? | S2 | END | Y | ||
| Prenanthes crepidinea | Nodding Rattlesnake-root | G4 | S1 | END | Y | ||
| Primula mistassinica | Bird's-eye Primrose | G5 | S3 | SC | Y | ||
| Psilocarya scirpoides | Long-beaked Baldrush | G4 | S2 | THR | Y | ||
| Ptelea trifoliata | Wafer-ash | G5 | S2 | SC | Y | ||
| Pterospora andromedea | Giant Pinedrops | G5 | S1 | END | Y | ||
| Pyrola minor | Lesser Wintergreen | G5 | S1 | END | Y | ||
| Quercus muehlenbergii | Chinquapin Oak | G5 | S1S2 | SC | Y | ||
| Quercus palustris | Pin Oak | G5 | S1 | SC | Y | ||
| Ranunculus cymbalaria | Seaside Crowfoot | G5 | S2 | THR | Y | ||
| Ranunculus gmelinii | Small Yellow Water Crowfoot | G5 | S2 | END | Y | ||
| Ranunculus lapponicus | Lapland Buttercup | G5 | S1 | END | Y | ||
| Rhamnus lanceolata var. glabrata | Lanced-leaved Buckthorn | G5T4T5 | S1 | SC | Y | ||
| Rhexia virginica | Virginia Meadow-beauty | G5 | S3 | SC | Y | ||
| Rhododendron lapponicum | Lapland Azalea | G5 | S1 | END | Y | ||
| Rhus aromatica | Fragrant Sumac | G5 | S1 | SC | Y | ||
| Rhynchospora fusca | Brown Beakrush | G4G5 | S2 | SC | Y | ||
| Ribes hudsonianum | Northern Black Currant | G5 | S3 | SC | Y | ||
| Ribes oxyacanthoides | Canada Gooseberry | G5 | S2 | THR | Y | ||
| Rubus arcticus | Nagoonberry | G5 | S1 | SC | W | ||
| Rubus uniformis | Uniform Bramble | G4?Q | SH | SC | Y | ||
| Ruellia humilis | Hairy Wild-petunia | G5 | S2 | END | Y | ||
| Sagittaria calycina | Long-lobe Arrowhead | G5 | S1 | SC | Y | ||
| Salix cordata | Sand Dune Willow | G4 | S1 | END | Y | ||
| Salix pellita | Satiny Willow | G5 | S1 | END | Y | ||
| Salix planifolia | Tea-leaved Willow | G5 | S2 | THR | Y | ||
| Salix sericea | Silky Willow | G5 | SH | SC | Y | ||
| Scirpus cespitosus | Tufted Bulrush | G5 | S2 | THR | Y | ||
| Scirpus georgianus | Georgia Bulrush | G5 | SH | SC | Y | ||
| Scirpus hallii | Hall's Bulrush | G2G3 | S1 | END | Y | ||
| Scirpus heterochaetus | Slender Bulrush | G5 | S1 | SC | Y | ||
| Scirpus pallidus | Pale Bulrush | G5 | SH | SC | Y | ||
| Scirpus torreyi | Torrey's Bulrush | G5? | S2 | SC | Y | ||
| Scleria reticularis | Reticulated Nutrush | G4 | S1 | END | Y | ||
| Scleria triglomerata | Whip Nutrush | G5 | S2S3 | SC | Y | ||
| Scleria verticillata | Low Nutrush | G5 | S2 | SC | Y | ||
| Scutellaria ovata | Heart-leaved Skullcap | G5 | S3 | SC | Y | ||
| Scutellaria parvula var. parvula | Small Skullcap | G4T4 | S1 | END | Y | ||
| Selaginella selaginoides | Low Spike-moss | G5 | S1 | END | Y | ||
| Senecio congestus | Marsh Ragwort | G5 | S1 | SC | Y | ||
| Senecio indecorus | Plains Ragwort | G5 | S1 | THR | Y | ||
| Senecio plattensis | Prairie Ragwort | G5 | S3 | SC | Y | ||
| Senna marilandica | Maryland Senna | G5 | S1 | SC | Y | ||
| Silene nivea | Snowy Campion | G4? | S2 | THR | Y | ||
| Silene regia | Wild Pink | G3 | SU | SC | W | ||
| Silene virginica | Fire Pink | G5 | S1 | END | Y | ||
| Sisyrinchium angustifolium | Pointed Blue-eyed-grass | G5 | S1 | SC | Y | ||
| Solidago caesia | Bluestem Goldenrod | G5 | S3 | END | Y | ||
| Solidago ohioensis | Ohio Goldenrod | G4 | S3 | SC | Y | ||
| Solidago sciaphila | Shadowy Goldenrod | G3G4 | S3 | SC | Y | ||
| Solidago simplex var. gillmanii | Dune Goldenrod | G5T3? | S2 | THR | Y | ||
| Sparganium glomeratum | Northern Bur-reed | G4? | S2 | THR | Y | ||
| Spiranthes lucida | Shining Lady's-tresses | G5 | S1 | SC | Y | ||
| Spiranthes ovalis var. erostellata | October Lady's-tresses | G5?T4? | S1 | SC | Y | ||
| Streptopus amplexifolius | White Mandarin | G5 | S3 | SC | Y | ||
| Strophostyles leiosperma | Small-flowered Woolly Bean | G5 | S2 | SC | Y | ||
| Talinum rugospermum | Prairie Fame-flower | G3G4 | S3 | SC | Y | ||
| Tanacetum huronense | Lake Huron Tansy | G5T4T5 | S1 | END | Y | ||
| Taxus canadensis | Canadian Yew | G5 | S4 | SC | W | ||
| Thalictrum revolutum | Waxleaf Meadowrue | G5 | S2 | SC | Y | ||
| Thalictrum venulosum | Veined Meadowrue | G5 | S1 | SC | Y | ||
| Thaspium barbinode | Hairy-jointed Meadow-parsnip | G5 | S1 | END | Y | ||
| Thaspium trifoliatum var. flavum | Purple Meadow-parsnip | G5T5 | S2 | SC | Y | ||
| Thelypteris simulata | Bog Fern | G4G5 | S3 | SC | Y | ||
| Tiarella cordifolia | Heart-leaved Foam-flower | G5 | S1 | END | Y | ||
| Tofieldia glutinosa | Sticky False-asphodel | G4G5 | S2S3 | THR | Y | ||
| Tomanthera auriculata | Earleaf Foxglove | G3 | S1 | SC | Y | ||
| Triglochin maritima | Common Bog Arrow-grass | G5 | S3 | SC | Y | ||
| Triglochin palustris | Slender Bog Arrow-grass | G5 | S3 | SC | Y | ||
| Trillium nivale | Snow Trillium | G4 | S3 | THR | Y | ||
| Trillium recurvatum | Reflexed Trillium | G5 | S3 | SC | Y | ||
| Triphora trianthophora | Nodding Pogonia | G3G4 | S2 | SC | Y | ||
| Trisetum melicoides | Purple False Oats | G4 | S1 | END | Y | ||
| Trisetum spicatum | Narrow False Oats | G5 | S2 | THR | Y | ||
| Utricularia geminiscapa | Hidden-fruited Bladderwort | G4G5 | S3 | SC | Y | ||
| Utricularia purpurea | Purple Bladderwort | G5 | S3 | SC | Y | ||
| Utricularia resupinata | Northeastern Bladderwort | G4 | S3 | SC | Y | ||
| Utricularia subulata | Zigzag Bladderwort | G5 | S1 | SC | Y | ||
| Vaccinium cespitosum | Dwarf Huckleberry | G5 | S2 | END | Y | ||
| Vaccinium pallidum | Blue Ridge Blueberry | G5 | S1 | SC | Y | ||
| Vaccinium vitis-idaea ssp. minus | Mountain Cranberry | G5T5 | S1 | END | Y | ||
| Valeriana sitchensis ssp. uliginosa | Marsh Valerian | G4Q | S2 | THR | Y | ||
| Verbena simplex | Narrow-leaved Vervain | G5 | S1 | SC | Y | ||
| Vernonia baldwinii | Baldwin's Ironweed | G5 | S1 | SC | W | ||
| Viburnum edule | Squashberry | G5 | S2 | END | Y | ||
| Viburnum nudum var. cassinoides | Northern Wild-raisin | G5T5 | S2 | SC | Y | ||
| Viburnum prunifolium | Smooth Black-haw | G5 | S2 | SC | Y | ||
| Viola fimbriatula | Sand Violet | G5T5 | S2 | END | Y | ||
| Viola rostrata | Long-spur Violet | G5 | S2S3 | SC | Y | ||
| Woodsia oregana ssp. cathcartiana | Oregon Woodsia (Tetraploid) | G5T5 | S1 | SC | Y | ||
| Zigadenus elegans var. glaucus | White Camas | G5T4T5 | S2S3 | SC | Y |
Last Revised: July 09, 2009
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