Wisconsin's rare plants

There are 336 vascular plants on Wisconsin's Natural Heritage Working List, including 316 that are tracked by the Natural Heritage Inventory. Rare plant habitats can vary greatly in size and quality, with species occurring in both large blocks of high-quality undisturbed habitats as well as small, remnant, isolated sites.

Explore rare plants pages

These pages contain information about Wisconsin's rare plants, including where they are found in the state, their level of legal protection and photos. Life history and management considerations are available for many species, and new information is continually being added.

Click on the table headings to sort or you can sort taxonomically. Choose a species from the list to explore information for that animal. View the table key.

Scientific Name	Common Name	Global Rank	State Rank	Federal Status	WI Status	Mapped in NHI
Acer pensylvanicum	Striped Maple	G5	S1		SC	Y
Aconitum noveboracense	Northern Monkshood	G3	S2	LT	THR	Y
Adlumia fungosa	Climbing Fumitory	G4	S2		SC	Y
Adoxa moschatellina	Muskroot	G5	S2		THR	Y
Agalinis auriculata	Earleaf Foxglove	G3	S1		SC	Y
Agalinis gattingeri	Roundstem Foxglove	G4	S2		THR	Y
Agalinis skinneriana	Pale False Foxglove	G3G4	S2		END	Y
Agrimonia parviflora	Swamp Agrimony	G5	S1S2		SC	Y
Amerorchis rotundifolia	Round-leaved Orchis	G5	S1S2		THR	Y
Ammannia robusta	Scarlet Loosestrife	G5	S2		SC	Y
Anemone caroliniana	Carolina Anemone	G5	S1		END	Y
Anemone multifida var. multifida	Cut-leaved Anemone	G5T5	S1		END	Y
Anticlea elegans ssp. glaucus	White Camas	G5T4T5	S3		SC	Y
Aplectrum hyemale	Putty Root	G5	S2S3		SC	Y
Aristida dichotoma	Shinners' Three-awned Grass	G5	S1		SC	Y
Armoracia lacustris	Lake Cress	G4?	S1		END	Y
Arnoglossum plantagineum	Prairie Indian-plantain	G4G5	S3		SC	Y
Arnoglossum reniforme	Great Indian-plantain	G4	S3		SC	Y
Artemisia dracunculus	Dragon Wormwood	G5	S2		SC	Y
Artemisia frigida	Prairie Sagebrush	G5	S2		SC	Y
Asclepias hirtella	Green Milkweed	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	Pinnatifid Spleenwort	G4	S1		THR	Y
Asplenium trichomanes	Maidenhair Spleenwort	G5	S2S3		SC	Y
Asplenium trichomanes-ramosum	Green Spleenwort	G5	S1		END	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
Azolla caroliniana	Eastern Mosquito Fern	G5	SU			N
Azolla mexicana	Floating-fern	G5	SU			N
Baptisia tinctoria	Yellow Wild-indigo	G5	S1		SC	Y
Bartonia paniculata	Twining Screwstem	G5	S1		SC	Y
Besseya bullii	Kitten Tails	G3	S3		THR	Y
Boechera dentata	Short's Rock-cress	G5	S1S2		SC	Y
Boechera missouriensis	Missouri Rock-cress	G5	S2		SC	Y
Botrychium campestre	Prairie Dunewort	G3G4	S1		END	Y
Botrychium lunaria	Common Moonwort	G5	S1S2		END	Y
Botrychium minganense	Mingan's Moonwort	G5	S2		SC	Y
Botrychium mormo	Little Goblin Moonwort	G2Q	S1S2		END	Y
Botrychium pallidum	Pale Moonwort	G3	S1		SC	Y
Botrychium spathulatum	Spoon-leaf Moonwort	G3	S1		SC	Y
Cakile edentula var. lacustris	American Sea-rocket	G5T3T5	S3		SC	Y
Calamovilfa longifolia var. magna	Sand Reedgrass	G5T3T5	S2		THR	Y
Callirhoe triangulata	Clustered Poppy-mallow	G3	S2		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	G2	S1	SOC	SC	Y
Caltha natans	Floating Marsh Marigold	G5	S1		END	Y
Calypso bulbosa	Calypso Orchid	G5	S2		THR	Y
Camassia scilloides	Wild Hyacinth	G5	S2		END	Y
Canadanthus modestus	Northwestern Sticky Aster	G5	S1		SC	Y
Cardamine maxima	Large Toothwort	G5	S1		SC	Y
Carex albicans var. albicans	Dry Woods Sedge	G5T5	S1		SC	Y
Carex backii	Rocky Mountain Sedge	G5	S1		SC	Y
Carex capillaris	Hair-like Sedge	G5	S1S2		SC	Y
Carex careyana	Carey's Sedge	G4G5	S1		THR	Y
Carex concinna	Beautiful Sedge	G5	S1		THR	Y
Carex crus-corvi	Ravenfoot Sedge	G5	S1		END	Y
Carex cumulata	Clustered Sedge	G4G5	S2		SC	Y
Carex digitalis var. digitalis	Slender Wood Sedge	G5T5	S1		SC	Y
Carex exilis	Coast Sedge	G5	S1		THR	Y
Carex festucacea	Fescue Sedge	G5	S2		SC	Y
Carex formosa	Handsome Sedge	G4	S2		THR	Y
Carex garberi	Elk Sedge	G5	S2		THR	Y
Carex gracilescens	Slender Sedge	G5?	S2		SC	Y
Carex laevivaginata	Smooth-sheathed Sedge	G5	S1		END	Y
Carex lenticularis	Shore Sedge	G5	S2		THR	Y
Carex livida	Livid Sedge	G5	S2		SC	Y
Carex longii	Greenish-white Sedge	G5	SH			N
Carex lupuliformis	False Hop Sedge	G4	S2		END	Y
Carex media	Intermediate Sedge	G5T5	S2		END	Y
Carex merritt-fernaldii	Fernald's Sedge	G5	S3		SC	Y
Carex michauxiana	Michaux's Sedge	G5	S2		THR	Y
Carex nigra	Smooth Black Sedge	G5	S1		SC	Y
Carex novae-angliae	New England Sedge	G5	S1		SC	Y
Carex platyphylla	Broad-leaf Sedge	G5	S2		SC	Y
Carex prasina	Drooping Sedge	G4	S3		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	G5	S2		SC	Y
Carex torreyi	Torrey's Sedge	G4G5	S1		SC	Y
Catabrosa aquatica	Brook Grass	G5	S1		END	Y
Chaerophyllum procumbens	Spreading Chervil	G5	S1		SC	Y
Cirsium hillii	Hill's Thistle	G3	S3	SOC	THR	Y
Cirsium pitcheri	Pitcher's Thistle	G3	S2	LT	THR	Y
Clinopodium arkansanum	Low Calamint	G5	S2		SC	Y
Commelina erecta var. deamiana	Narrow-leaved Dayflower	G5T5	S1		SC	Y
Conioselinum chinense	Hemlock-parsley	G5	SH		END	Y
Coreopsis lanceolata	Sand Coreopsis	G5	S2		SC	Y
Cornus drummondii	Northern Roughleaf Dogwood	G5	SNA			N
Crataegus beata	Dunbar's Hawthorn	G2G4	SH			N
Crotalaria sagittalis	Arrow-headed Rattle-box	G5	S1		SC	Y
Cuscuta coryli	Hazel Dodder	G5?	S1		SC	Y
Cuscuta glomerata	Rope Dodder	G5	S1		SC	Y
Cuscuta pentagona	Field Dodder	G5	S1		SC	Y
Cuscuta polygonorum	Knotweed Dodder	G5	S1		SC	Y
Cypripedium arietinum	Ram's-head Lady's-slipper	G3	S2		THR	Y
Cypripedium candidum	White Lady's-slipper	G4	S2		THR	Y
Cypripedium parviflorum var. makasin	Northern Yellow Lady's-slipper	G5T4T5	S3S4		SC	Y
Cystopteris laurentiana	Laurentian Bladder Fern	G3	S2		SC	Y
Dalea villosa var. villosa	Silky Prairie-clover	G5T5	S2		SC	Y
Danthonia compressa	Flattened Oatgrass	G5	SU			N
Dasistoma macrophylla	Mullein Foxglove	G4	S1		SC	Y
Desmodium canescens	Hoary Tick-trefoil	G5	S1		SC	Y
Desmodium perplexum	Perplexed Tick-trefoil	G5	S2S3		SC	Y
Diarrhena obovata	Ovate Beak Grass	G4G5	S2		END	Y
Dichanthelium wilcoxianum	Wilcox's Panic Grass	G5	S1		SC	Y
Didiplis diandra	Water-purslane	G5	S1		SC	Y
Diodia teres	Rough Buttonweed	G5	S1		SC	Y
Draba arabisans	Rock Whitlow-grass	G4G5	S2		SC	Y
Draba cana	Hoary Whitlow-grass	G5	S1		END	Y
Drosera anglica	English Sundew	G5	S1		THR	Y
Drosera linearis	Linear-leaved Sundew	G4G5	S1		THR	Y
Dryopteris clintoniana	Clinton's Woodfern	G5	SH			N
Dryopteris expansa	Spreading Woodfern	G5	S2		SC	Y
Dryopteris filix-mas	Male Fern	G5	S1		SC	Y
Echinacea pallida	Pale Purple Coneflower	G4	S3		THR	Y
Echinodorus berteroi	Erect Burhead	G5	SH			N
Eclipta prostrata	Yerba-de-tajo	G5	S1		SC	Y
Elatine triandra	Longstem Water-wort	G5	S1		SC	Y
Eleocharis compressa var. compressa	Flat-stemmed Spike-rush	G4	S2		SC	Y
Eleocharis engelmannii	Engelmann's Spike-rush	G4G5	S1		SC	Y
Eleocharis equisetoides	Horsetail Spike-rush	G4	S1		SC	Y
Eleocharis flavescens var. olivacea	Capitate Spike-rush	G5	S2		SC	Y
Eleocharis mamillata	Mamillate Spike-rush	G5	S1		SC	Y
Eleocharis nitida	Neat Spike-rush	G4	S2		END	Y
Eleocharis quadrangulata	Square-stem Spike-rush	G5	S1		END	Y
Eleocharis quinqueflora	Few-flowered Spike-rush	G5	S2		SC	Y
Eleocharis robbinsii	Robbins' Spike-rush	G4G5	S3		SC	Y
Eleocharis rostellata	Beaked Spike-rush	G5	S2		THR	Y
Eleocharis wolfii	Wolf Spike-rush	G3G5	S1	SOC	END	Y
Elymus lanceolatus ssp. psammophilus	Thickspike	G5T3	S2		THR	Y
Epilobium strictum	Downy Willow-herb	G5	S3		SC	Y
Equisetum palustre	Marsh Horsetail	G5	S2		SC	Y
Erigenia bulbosa	Harbinger-of-spring	G5	S1		END	Y
Eriophorum russeolum ssp. leiocarpum	Russet Cotton-grass	G5T4T5	S1		SC	Y
Euphorbia commutata	Wood Spurge	G5	SH			N
Euphorbia polygonifolia	Seaside Spurge	G5?	S2		SC	Y
Eurybia furcata	Forked Aster	G3	S3		THR	Y
Festuca occidentalis	Western Fescue	G5	S1		THR	Y
Festuca paradoxa	Cluster Fescue	G5	SH			N
Fimbristylis puberula	Chestnut Sedge	G5	S1		END	Y
Fraxinus quadrangulata	Blue Ash	G4	S1		THR	Y
Fuirena pumila	Dwarf Umbrella Sedge	G4	S1		END	Y
Galium brevipes	Swamp Bedstraw	G4?	S1		SC	Y
Galium palustre	Marsh Bedstraw	G5	S1		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	S1		SC	Y
Goodyera oblongifolia	Giant Rattlesnake-plantain	G5	S1		SC	Y
Gymnocarpium jessoense ssp. parvulum	Northern Oak Fern	G5T4T5	S1		SC	Y
Gymnocarpium robertianum	Limestone Oak Fern	G5	S1S2		SC	Y
Gymnocladus dioicus	Kentucky Coffee-tree	G5	S2		SC	Y
Homalosorus pycnocarpos	Glade Fern	G5	S2		SC	Y
Houstonia caerulea	Azure Bluets	G5	S2		SC	Y
Huperzia appressa	Mountain Fir Moss	G5	S1		SC	Y
Huperzia porophila	Rock Clubmoss	G4	S3		SC	Y
Huperzia selago	Fir Clubmoss	G5	S1S2		SC	Y
Hybanthus concolor	Green Violet	G5	S1		SC	Y
Hydrastis canadensis	Golden-seal	G3G4	S2S3		SC	Y
Hydrophyllum appendiculatum	Great Water-leaf	G5	S3		SC	Y
Hypericum mutilum	Slender St John's-wort	G5	S2		SC	Y
Hypericum prolificum	Shrubby St. John's-wort	G5	S1		SC	Y
Hypericum sphaerocarpum	Round-fruited St. John's Wort	G5	S1S2		THR	Y
Iodanthus pinnatifidus	Purple Rocket	G5	S1		SC	Y
Iris lacustris	Dwarf Lake Iris	G3	S3	LT	THR	Y
Jeffersonia diphylla	Twinleaf	G5	S3		SC	Y
Juglans cinerea	Butternut	G3	S2S3		SC	Y
Juncus marginatus	Grassleaf Rush	G5	S2		SC	Y
Juncus stygius	Bog Rush	G5	S1		END	Y
Juncus vaseyi	Vasey's Rush	G5	S3		SC	Y
Lechea mucronata	Hairy Pinweed	G5	S1		SC	Y
Lemna aequinoctialis	Lesser Duckweed	G5	SU			N
Lemna obscura	Little Duckweed	G5	SU			N
Lemna perpusilla	Minute Duckweed	G5	SU			N
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
Listera auriculata	Auricled Twayblade	G3G4	S1		END	Y
Listera convallarioides	Broad-leaved Twayblade	G5	S1		THR	Y
Littorella uniflora	American Shoreweed	G5	S2		SC	Y
Lonicera involucrata	Fly Honeysuckle	G5	S1		END	Y
Lycopodiella margueritae	Northern Prostrate Clubmoss	G1G2	S1		SC	Y
Malaxis monophyllos var. brachypoda	White Adder's-mouth	G5T4T5	S3		SC	Y
Melica nitens	Three-flowered Melic Grass	G5	S1		SC	Y
Melica smithii	Smith's Melic Grass	G4	S1		END	Y
Minuartia dawsonensis	Rock Stitchwort	G5	S1		SC	Y
Moehringia macrophylla	Large-leaved Sandwort	G5	S1		END	Y
Muhlenbergia richardsonis	Mat Muhly	G5	S1		END	Y
Myosotis laxa	Small Forget-me-not	G5	S2		SC	Y
Myriophyllum humile	Low Water Milfoil	G5	SU			N
Najas gracillima	Thread-like Naiad	G5?	S3S4		SC	Y
Napaea dioica	Glade Mallow	G4	S3		SC	Y
Nothocalais cuspidata	Prairie False-dandelion	G5	S2		SC	Y
Nuphar advena	Yellow Water Lily	G5T5	S1		SC	Y
Nuphar microphylla	Small Yellow Pond Lily	G5T4T5	S1		SC	Y
Nyssa sylvatica	Black Tupelo	G5	S1		SC	Y
Oenothera serrulata	Yellow Evening Primrose	G5	S2		SC	Y
Omalotheca sylvatica	Woodland Cudweed	G4G5	S1		SC	Y
Opuntia fragilis	Brittle Prickly-pear	G5	S3		THR	Y
Orobanche fasciculata	Clustered Broomrape	G4G5	S1		THR	Y
Orobanche ludoviciana	Louisiana Broomrape	G5	S1		END	Y
Oxytropis campestris var. chartacea	Fassett's Locoweed	G5T1T2	S1S2	LT	END	Y
Packera indecora	Plains Ragwort	G5	S1		THR	Y
Packera plattensis	Prairie Ragwort	G5	S3		SC	Y
Parnassia palustris	Marsh Grass-of-Parnassus	G5	S1S2		THR	Y
Parnassia parviflora	Small-flowered Grass-of-Parnassus	G5?	S1		END	Y
Paronychia canadensis	Smooth Forked Nail-wort	G5	S2S3		SC	Y
Paronychia fastigiata	Hairy Forked Nail-wort	G5	SU			N
Pediomelum argophyllum	Silvery Scurf Pea	G5	S1		SC	Y
Pediomelum esculentum	Prairie Turnip	G5	S2		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	Sweet Colt's-foot	G5	S3		THR	Y
Phegopteris hexagonoptera	Broad Beech Fern	G5	S2		SC	Y
Phemeranthus rugospermus	Prairie Fame-flower	G3G4	S3		SC	Y
Phlox bifida ssp. bifida	Cleft Phlox	G5?T5?	S1		SC	Y
Phlox glaberrima ssp. interior	Smooth Phlox	G5TNR	S2		END	Y
Pinguicula vulgaris	Common Butterwort	G5	S1		END	Y
Piptatheropsis canadensis	Canada Mountain Ricegrass	G4G5	S1		SC	Y
Plantago cordata	Heart-leaved Plantain	G4	S1		END	Y
Platanthera flava var. herbiola	Pale Green Orchid	G4?T4Q	S2		THR	Y
Platanthera hookeri	Hooker's Orchid	G4	S2		SC	Y
Platanthera leucophaea	Eastern Prairie White Fringed Orchid	G2G3	S2	LT	END	Y
Platanus occidentalis	Sycamore	G5	S2		SC	Y
Poa paludigena	Bog Bluegrass	G3G4	S3		SC	Y
Poa sylvestris	Woodland Bluegrass	G5	S1		SC	Y
Poa wolfii	Wolf's Bluegrass	G4	S1		SC	Y
Polanisia jamesii	James' Cristatella	G5	SH			N
Polemonium occidentale ssp. lacustre	Western Jacob's Ladder	G5?T2Q	S1		END	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	S2		THR	Y
Potamogeton bicupulatus	Snail-seed Pondweed	G4	S2		SC	Y
Potamogeton confervoides	Algae-leaved Pondweed	G5	S2		THR	Y
Potamogeton diversifolius	Water-thread Pondweed	G5	S2		SC	Y
Potamogeton hillii	Hill's Pondweed	G3	S1		SC	Y
Potamogeton oakesianus	Oakes' Pondweed	G5	S3		SC	Y
Potamogeton perfoliatus	Clasping-leaf Pondweed	G5	S1		SC	Y
Potamogeton pulcher	Spotted Pondweed	G5	S1		END	Y
Potamogeton vaseyi	Vasey's Pondweed	G4	S3		SC	Y
Prenanthes aspera	Rough Rattlesnake-root	G4?	S1		END	Y
Prenanthes crepidinea	Nodding Rattlesnake-root	G4	S1		END	Y
Primula fassettii	Jeweled Shooting Star	G4	S1S2		SC	Y
Primula mistassinica	Bird's-eye Primrose	G5	S3		SC	Y
Pseudognaphalium micradenium	Catfoot	G4G5T3?	S1		SC	Y
Pseudognaphalium saxicola	Cliff Cudweed	G5T2	S2		THR	Y
Ptelea trifoliata ssp. trifoliata var. trifoliata	Wafer-ash	G5T5	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 Beak-rush	G4G5	S2		SC	Y
Rhynchospora scirpoides	Long-beaked Bald-rush	G4	S2		THR	Y
Ribes oxyacanthoides ssp. oxyacanthoides	Canadian Gooseberry	G5T5	S2		THR	Y
Rotala ramosior	Toothcup	G5	S2S3		SC	Y
Rudbeckia fulgida	Orange Coneflower	G5	SU			N
Ruellia humilis	Hairy Wild Petunia	G5	S2		END	Y
Sagittaria brevirostra	Shortbeak Arrowhead	G5	SU			N
Sagittaria montevidensis ssp. calycina	Long-lobed Arrowhead	G5T5?	S1		SC	Y
Salix cordata	Sand Dune Willow	G4	S1		END	Y
Salix pellita	Satiny Willow	G5	S1		END	Y
Salix planifolia ssp. planifolia	Tea-leaved Willow	G5T5	S2		THR	Y
Salix sericea	Silky Willow	G5	S1S2		SC	Y
Sceptridium oneidense	Blunt-lobe Grape-fern	G4	S2		SC	Y
Sceptridium rugulosum	Rugulose Grape-fern	G3	S2		SC	Y
Schoenoplectus hallii	Hall's Bulrush	G3	S1	SOC	END	Y
Schoenoplectus heterochaetus	Slender Bulrush	G5	S1		SC	Y
Schoenoplectus torreyi	Torrey's Bulrush	G5?	S2		SC	Y
Scirpus georgianus	Georgia Bulrush	G5	S1		SC	Y
Scirpus pallidus	Pale Bulrush	G5	S2		SC	Y
Scleria reticularis	Netted Nutrush	G4	S1		END	Y
Scleria triglomerata	Whip Nutrush	G5	S2		SC	Y
Scleria verticillata	Low Nutrush	G5	S2		SC	Y
Scutellaria ovata ssp. ovata	Heart-leaved Skullcap	G5T5	S2S3		SC	Y
Scutellaria parvula var. parvula	Small Skullcap	G4T4	S1		END	Y
Selaginella selaginoides	Low Spike-moss	G5	S1		END	Y
Senna hebecarpa	Northern Wild Senna	G5	S1		SC	Y
Senna marilandica	Maryland Senna	G5	S1		SC	Y
Silene nivea	Snowy Campion	G4?	S3		SC	Y
Silene virginica	Fire Pink	G5	S1		END	Y
Sisyrinchium albidum	White Blue-eyed-grass	G5?	S2S3		SC	Y
Sisyrinchium angustifolium	Pointed Blue-eyed-grass	G5	S1		SC	Y
Solidago caesia	Bluestem Goldenrod	G5	S3		END	Y
Solidago simplex var. gillmanii	Dune Goldenrod	G5T3?	S2		THR	Y
Sparganium glomeratum	Clustered Bur-reed	G4?	S2		THR	Y
Spiranthes lucida	Shining Lady's-tresses	G4	S1		SC	Y
Spiranthes magnicamporum	Great Plains Lady's-tresses	G3G4	S3		SC	Y
Spiranthes ovalis var. erostellata	October Lady's-tresses	G5?T4?	S1		SC	Y
Strophostyles leiosperma	Small-flowered Woolly Bean	G5	S2		SC	Y
Stuckenia filiformis ssp. alpina	Northern Slender Pondweed	G5T5	S2		SC	Y
Stuckenia filiformis ssp. occidentalis	Slender Pondweed	G5T5	S2		SC	Y
Stuckenia vaginata	Sheathed Pondweed	G5	S1		THR	Y
Sullivantia sullivantii	Sullivant's Cool-wort	G4	S3		SC	Y
Symphyotrichum dumosum var. strictior	Bushy Aster	G5T4	S1		SC	Y
Symphyotrichum racemosum var. subdumosum	Fragile-stemmed Aster	G4G5T3T5Q	SNA			N
Symphyotrichum robynsianum	Robyns' Aster	G5	S1		SC	Y
Tanacetum bipinnatum ssp. huronense	Lake Huron Tansy	G5T4T5	S1		END	Y
Tephroseris palustris	Marsh Ragwort	G5	S1		SC	Y
Thalictrum revolutum	Waxleaf Meadowrue	G5	S2		SC	Y
Thalictrum venulosum	Veined Meadowrue	G5	S1		SC	Y
Thaspium chapmanii	Hairy Meadow Parsnip	GNR	S1		END	Y
Thaspium trifoliatum var. flavum	Purple Meadow Parsnip	G5T5	S2		SC	Y
Tiarella cordifolia	Heartleaf Foamflower	G5	S1		END	Y
Triantha glutinosa	False Asphodel	G5	S2S3		THR	Y
Trichophorum cespitosum	Tufted Bulrush	G5	S2		THR	Y
Triglochin palustris	Slender Bog Arrow-grass	G5	S3		SC	Y
Trillium nivale	Snow Trillium	G4	S3		THR	Y
Triphora trianthophora	Nodding Pogonia	G4?	S2		SC	Y
Trisetum melicoides	Purple False Oats	G4G5	S1		END	Y
Trisetum spicatum	Spike Trisetum	G5	S2		THR	Y
Utricularia resupinata	Northeastern Bladderwort	G4	S3		SC	Y
Utricularia subulata	Zigzag Bladderwort	G5	SU			N
Vaccinium cespitosum	Dwarf Bilberry	G5	S2		END	Y
Vaccinium pallidum	Blue Ridge Blueberry	G5	S1		SC	Y
Vaccinium vitis-idaea	Mountain Cranberry	G5	S1S2		END	Y
Valeriana edulis var. ciliata	Hairy Valerian	G5T3	S3		SC	Y
Valeriana uliginosa	Marsh Valerian	G4	S2		THR	Y
Verbena simplex	Narrow-leaved Vervain	G5	S1		SC	Y
Viburnum cassinoides	Northern Wild-raisin	G5T5	S1		SC	Y
Viburnum edule	Squashberry	G5	S2		END	Y
Viburnum prunifolium	Smooth Black-haw	G5	S2		SC	Y
Viola rostrata	Long-spurred Violet	G5	S2S3		SC	Y
Viola sagittata var. ovata	Sand Violet	G5T5	S2		END	Y
Viola striata	Striped Violet	G5	S1		SC	Y
Woodsia oregana ssp. cathcartiana	Oregon Woodsia	G5T5	S1		SC	Y