Michigan's Special Plants

This list presents the Endangered (E), Threatened (T), and Probably Extirpated (X) plant species of Michigan, which are protected under the Endangered Species Act of the State of Michigan (Part 365 of PA 451, 1994 Michigan Natural Resources and Environmental Protection Act). The current list became effective on April 9, 2009, after extensive review by technical advisors to the Michigan Department of Natural Resources and the citizenry of the state.

Also included in this list are plant species of Special Concern. While not afforded legal protection under the Act, many of these species are of concern because of declining or relict populations in the state. Should these species continue to decline, they would be recommended for Threatened or Endangered status. Protection of Special Concern species now, before they reach dangerously low population levels, would prevent the need to list them in the future by maintaining adequate numbers of self-sustaining populations within Michigan. Some other potentially rare species are listed as of Special Concern pending more precise information on their status in the state; when such information becomes available, they could be moved to threatened or endangered status or deleted from the list.

This list was produced by the Endangered Species Program of the Michigan Department of Natural Resources and the Michigan Natural Features Inventory. English names in common usage or from published sources have been incorporated, when possible, to promote public understanding of and participation in the Endangered Species Program. To comment on the list or request additional copies, or for information on the Endangered Species Program, contact the Endangered Species Coordinator, Wildlife Division, Michigan Department of Natural Resources, P.O. Box 30028, Lansing, MI 48909 (517-373-1263). To report occurrences of these species, please contact us.

The special plants list is also available as a PDF document.

Scientific Name	Common Name	Family	US Status	State Status	Global Rank	State Rank	More Information
Adlumia fungosa	Climbing fumitory	Fumariaceae		SC	G4	S3	Explorer
Agalinis gattingeri	Gattinger's gerardia	Scrophulariaceae		E	G4	S1	Explorer Abstract
Agalinis skinneriana	Skinner's gerardia	Scrophulariaceae		E	G3G4	S1	Explorer Abstract
Agoseris glauca	Prairie or pale agoseris	Asteraceae		T	G5	S2	Explorer Abstract
Agrimonia rostellata	Beaked agrimony	Rosaceae		T	G5	S2	Explorer
Agropyron spicatum (Elytrigia spicata )	Bluebunch wheatgrass	Poaceae		X	G5	SX	Explorer
Allium schoenoprasum (Allium schoenoprasum var. sibiricum)	Chives	Liliaceae		T	G5	S2	Explorer
Amerorchis rotundifolia (Orchis rotundifolia)	Small round-leaved orchis	Orchidaceae		E	G5	S1	Explorer Abstract
Amorpha canescens	Leadplant	Fabaceae		SC	G5	S3	Explorer Abstract
Androsace occidentalis	Rock-jasmine	Primulaceae		E	G5	SH	Explorer
Angelica venenosa	Hairy angelica	Apiaceae		SC	G5	S3	Explorer
Antennaria parvifolia	Pussy-toes	Asteraceae		SC	G5	S1	Explorer
Antennaria rosea	Rosy pussytoes	Asteraceae		E	G5	SX	Explorer
Arabis missouriensis var. deamii (Boechera missouriensis)	Missouri rock-cress	Brassicaceae		SC	G5?QT3?Q	S2	Explorer
Arabis perstellata (Boechera dentata)	Rock cress	Brassicaceae		T	G5	S1	Explorer
Aristida dichotoma	Three-awned grass	Poaceae		X	G5	SX	Explorer
Aristida longespica	Three-awned grass	Poaceae		T	G5	S2	Explorer Abstract
Aristida tuberculosa	Beach three-awned grass	Poaceae		E	G5	S1	Explorer
Aristolochia serpentaria	Virginia snakeroot	Aristolochiaceae		T	G4	S2	Explorer Abstract
Armoracia lacustris (Armoracia aquatica)	Lake cress	Brassicaceae		T	G4?	S2	Explorer Abstract
Arnica cordifolia (Arnica whitneyi)	Heart-leaved arnica	Asteraceae		E	G5	S1	Explorer Abstract
Arnica lonchophylla	Longleaf arnica	Asteraceae		E	G4	S1	Explorer
Artemisia ludoviciana	Western mugwort	Asteraceae		T	G5	S1	Explorer
Asclepias hirtella	Tall green milkweed	Asclepiadaceae		T	G5	S2	Explorer Abstract
Asclepias ovalifolia	Dwarf milkweed	Asclepiadaceae		E	G5?	S1	Explorer
Asclepias purpurascens	Purple milkweed	Asclepiadaceae		T	G5?	S2	Explorer Abstract
Asclepias sullivantii	Sullivant's milkweed	Asclepiadaceae		T	G5	S2	Explorer Abstract
Asplenium rhizophyllum (Camptosorus rhizophyllus)	Walking fern	Aspleniaceae		T	G5	S2S3	Explorer Abstract
Asplenium ruta-muraria	Wall-rue	Aspleniaceae		E	G5	S1	Explorer
Asplenium scolopendrium var. americanum (Phyllitis scolopendrium var. americana)	Hart's-tongue fern	Aspleniaceae	LT	E	G4T3	S1	Explorer Abstract
Asplenium trichomanes-ramosum (Asplenium viride)	Green spleenwort	Aspleniaceae		SC	G4	S3	Explorer
Aster drummondii (Symphyotrichum drummondii)	Drummond's aster	Asteraceae		T	G5	S2	Explorer
Aster furcatus (Eurybia furcata)	Forked aster	Asteraceae		T	G3	S1	Explorer
Aster modestus (Canadanthus modestus)	Great northern aster	Asteraceae		T	G5	S1	Explorer Abstract
Aster praealtus (Symphyotrichum praealtum)	Willow aster	Asteraceae		SC	G5	S3	Explorer
Aster sericeus (Symphyotrichum sericeum)	Western silvery aster	Asteraceae		T	G5	S2	Explorer
Astragalus canadensis	Canadian milk vetch	Fabaceae		T	G5	S1S2	Explorer
Astragalus neglectus	Cooper's milk vetch	Fabaceae		SC	G4	S3	Explorer
Baptisia lactea (Baptisia leucantha)	White or prairie false indigo	Fabaceae		SC	G4Q	S3	Explorer
Baptisia leucophaea	Cream wild indigo	Fabaceae		E	G4G5T4T5	S1	Explorer
Bartonia paniculata	Panicled screwstem	Gentianaceae		T	G5	S2	Explorer Abstract
Beckmannia syzigachne	Slough grass	Poaceae		T	G5	S2	Explorer Abstract
Berula erecta (Berula pusilla)	Cut-leaved water parsnip	Apiaceae		T	G4G5	S2	Explorer
Besseya bullii	Kitten-tails	Scrophulariaceae		E	G3	S1	Explorer
Betula murrayana	Murray birch	Betulaceae		SC	G1Q	S1	Explorer
Betula populifolia	Gray birch	Betulaceae		SC	G5	S3	Explorer
Botrychium acuminatum	Moonwort	Ophioglossaceae		E	G1	S1	Explorer Abstract
Botrychium campestre	Prairie Moonwort or Dunewort	Ophioglossaceae		T	G3G4	S2	Explorer Abstract
Botrychium hesperium	Western moonwort	Ophioglossaceae		T	G4	S2	Explorer Abstract
Botrychium mormo	Goblin moonwort	Ophioglossaceae		T	G3	S2	Explorer Abstract
Botrychium pallidum	pale moonwort	Ophioglossaceae		SC	G3	S3	Explorer
Botrychium spathulatum	Spatulate moonwort	Ophioglossaceae		T	G3	S2	Explorer
Bouteloua curtipendula	Side-oats grama grass	Poaceae		E	G5	S1	Explorer
Braya humilis	Low northern rock cress	Brassicaceae		T	G5	S1	Explorer
Bromus nottowayanus	Satin brome	Poaceae		SC	G3G5	S3	Explorer
Bromus pumpellianus	Pumpelly's bromegrass	Poaceae		T	G5T4	S2	Explorer Abstract
Buchnera americana	Bluehearts	Scrophulariaceae		X	G5?	SX	Explorer
Cacalia plantaginea (Arnoglossum plantagineum)	Prairie indian-plantain	Asteraceae		SC	G4G5	S3	Explorer Abstract
Calamagrostis lacustris	Northern reedgrass	Poaceae		T	G3Q	S1	Explorer
Calamagrostis stricta	Narrow-leaved reedgrass	Poaceae		T	G5	S1	Explorer
Callitriche hermaphroditica	Autumnal water-starwort	Callitrichaceae		SC	G5	S2	Explorer
Callitriche heterophylla	Large water starwort	Callitrichaceae		T	G5	S1	Explorer
Caltha natans	Floating marsh marigold	Ranunculaceae		T	G5	SNR
Calypso bulbosa	Calypso or fairy-slipper	Orchidaceae		T	G5	S2	Explorer Abstract
Camassia scilloides	Wild hyacinth	Liliaceae		T	G4G5	S2	Explorer
Carex albolutescens	Sedge	Cyperaceae		T	G5	S2	Explorer
Carex assiniboinensis	Assiniboia sedge	Cyperaceae		T	G4G5	S2	Explorer Abstract
Carex atratiformis	Sedge	Cyperaceae		T	G5	S2	Explorer Abstract
Carex conjuncta	Sedge	Cyperaceae		T	G4G5	S1	Explorer
Carex crus-corvi	Raven's-foot sedge	Cyperaceae		E	G5	S1	Explorer
Carex davisii	Davis's sedge	Cyperaceae		SC	G4	S3	Explorer
Carex decomposita	Log sedge	Cyperaceae		X	G3	SX	Explorer
Carex festucacea	Fescue sedge	Cyperaceae		SC	G5	S1	Explorer
Carex gravida	Sedge	Cyperaceae		X	G5	SX	Explorer
Carex haydenii	Hayden's sedge	Cyperaceae		X	G5	SX	Explorer
Carex heleonastes	Hudson Bay sedge	Cyperaceae		E	G4	S1	Explorer
Carex inops ssp. heliophila	Sun sedge	Cyperaceae		SC	G5T5	S3	Explorer
Carex lupuliformis	False hop sedge	Cyperaceae		T	G4	S2	Explorer Abstract
Carex media	Sedge	Cyperaceae		T	G5T5?	S2S3	Explorer
Carex nigra	Black sedge	Cyperaceae		E	G5	S1	Explorer
Carex novae-angliae	New England sedge	Cyperaceae		T	G5	S1	Explorer
Carex oligocarpa	Eastern few-fruited sedge	Cyperaceae		T	G4	S2	Explorer
Carex platyphylla	Broad-leaved sedge	Cyperaceae		E	G5	S1	Explorer Abstract
Carex richardsonii	Richardson's sedge	Cyperaceae		SC	G4	S3S4	Explorer Abstract
Carex rossii	Ross's sedge	Cyperaceae		T	G5	S2	Explorer
Carex scirpoidea	Bulrush sedge	Cyperaceae		T	G5	S2	Explorer
Carex seorsa	Sedge	Cyperaceae		T	G4	S2	Explorer
Carex squarrosa	Sedge	Cyperaceae		SC	G4G5	S1	Explorer
Carex straminea	Straw sedge	Cyperaceae		E	G5	SH	Explorer
Carex tincta	Sedge	Cyperaceae		T	G4G5	S1	Explorer
Carex trichocarpa	Hairy-fruited sedge	Cyperaceae		SC	G4	S2	Explorer
Carex typhina	Cattail sedge	Cyperaceae		T	G5	S1	Explorer
Carex wiegandii	Wiegand's sedge	Cyperaceae		SC	G4	S3	Explorer
Castanea dentata	American chestnut	Fagaceae		E	G4	S1S2	Explorer
Castilleja septentrionalis	Pale Indian paintbrush	Scrophulariaceae		T	G5	S2S3	Explorer Abstract
Ceanothus sanguineus	Wild lilac	Rhamnaceae		T	G4G5	S2	Explorer Abstract
Celtis tenuifolia	Dwarf hackberry	Ulmaceae		SC	G5	S3	Explorer Abstract
Cerastium brachypodum	Shortstalk chickweed	Caryophyllaceae		T	G5	S2	Explorer
Cerastium velutinum	Field Chickweed	Caryophyllaceae		X	G5T4?	SX	Explorer
Chamaerhodos nuttallii var. keweenawensis (Chamaerhodos erecta)	Rock-rose	Rosaceae		E	G5T1Q	S1	Explorer
Chasmanthium latifolium (Uniola latifolia)	Wild oats	Poaceae		E	G5	S1	Explorer
Chelone obliqua	Purple turtlehead	Scrophulariaceae		E	G4	S1	Explorer Abstract
Cirsium hillii (Cirsium pumilum var. hillii)	Hill's thistle	Asteraceae		SC	G3	S3	Explorer Abstract
Cirsium pitcheri	Pitcher's thistle	Asteraceae	LT	T	G3	S3	Explorer Abstract
Clematis occidentalis	Purple clematis	Ranunculaceae		SC	G5	S3	Explorer Abstract
Collinsia parviflora	Small blue-eyed Mary	Scrophulariaceae		T	G5	S2	Explorer
Commelina erecta	Slender dayflower	Commelinaceae		X	G5	SX	Explorer
Coreopsis palmata	Prairie coreopsis	Asteraceae		T	G5	S2	Explorer Abstract
Corydalis flavula	Yellow fumewort	Fumariaceae		T	G5	S2	Explorer Abstract
Crataegus douglasii	Douglas's hawthorn	Rosaceae		SC	G5	S3S4	Explorer
Cryptogramma acrostichoides	American rock-brake	Pteridaceae		T	G5	S2	Explorer
Cuscuta campestris	Field dodder	Cuscutaceae		SC	G5	SH	Explorer
Cuscuta glomerata	Rope dodder	Cuscutaceae		SC	G5	SH	Explorer
Cuscuta indecora	Dodder	Cuscutaceae		SC	G5	SH	Explorer
Cuscuta pentagona	Dodder	Cuscutaceae		SC	G4G5	SH	Explorer
Cuscuta polygonorum	Knotweed dodder	Cuscutaceae		SC	G5	S2	Explorer
Cyperus acuminatus	Cyperus, Nut grass	Cyperaceae		X	G5	SX	Explorer
Cypripedium arietinum	Ram's head lady's-slipper	Orchidaceae		SC	G3	S3	Explorer Abstract
Cypripedium candidum	White lady slipper	Orchidaceae		T	G4	S2	Explorer Abstract
Cystopteris laurentiana	Laurentian fragile fern	Dryopteridaceae		SC	G3	S1S2	Explorer
Cystopteris tennesseensis	Tennissee bladder fern	Dryopteridaceae		T	G5	S2	Explorer
Dalea purpurea (Petalostemum purpureum)	Purple prairie clover	Fabaceae		X	G5	SX	Explorer
Dalibarda repens	False violet	Rosaceae		T	G5	S1S2	Explorer Abstract
Danthonia intermedia	Wild oat grass	Poaceae		SC	G5	S1S2	Explorer
Dasistoma macrophylla (Seymeria macrophylla)	Mullein-foxglove	Scrophulariaceae		E	G4	S1	Explorer
Dennstaedtia punctilobula	Hay-scented fern	Dennstaedtiaceae		T	G5	S1	Explorer
Dentaria maxima (Cardamine maxima)	Large toothwort	Brassicaceae		T	G5	S1S2	Explorer Abstract
Diarrhena obovata (Diarrhena americana)	Beak grass	Poaceae		T	G4G5	S2	Abstract
Dichanthelium leibergii (Panicum leibergii)	Leiberg's panic grass	Poaceae		T	G5	S2	Explorer Abstract
Dichanthelium microcarpon (Panicum microcarpon)	Small-fruited panic-grass	Poaceae		SC	GNR	S2	Explorer
Dichanthelium polyanthes (Panicum polyanthes)	Round-seed panic-grass	Poaceae		E	GNR	S1	Explorer Abstract
Digitaria filiformis	Slender finger grass	Poaceae		X	G5	SX	Explorer
Diphasiastrum alpinum (Lycopodium alpinum)	Alpine clubmoss	Lycopodiaceae		X	G5	SX	Explorer
Dodecatheon meadia	Shooting star	Primulaceae		E	G5	S1	Explorer Abstract
Draba arabisans	Rock whitlow grass	Brassicaceae		SC	G4	S3	Explorer Abstract
Draba cana	Ashy whitlow grass	Brassicaceae		T	G5	S1	Explorer
Draba glabella	Smooth whitlow grass	Brassicaceae		E	G4G5	S1	Explorer
Draba incana	Twisted whitlow grass	Brassicaceae		T	G5	S1	Explorer
Draba reptans	Creeping whitlow grass	Brassicaceae		T	G5	S1	Explorer
Drosera anglica (Drosera Xanglica)	English sundew	Droseraceae		SC	G5	S3	Explorer Abstract
Dryopteris celsa	Small log fern	Dryopteridaceae		T	G4	S2	Explorer
Dryopteris filix-mas	Male fern	Dryopteridaceae		SC	G5	S3	Explorer
Dryopteris fragrans	Fragrant cliff woodfern	Dryopteridaceae		SC	G5	S3	Explorer Abstract
Echinacea purpurea	Purple coneflower	Asteraceae		X	G4	SX	Explorer
Echinodorus tenellus (Echinodorus parvulus)	Dwarf burhead	Alismataceae		E	G5?	S1	Explorer
Eleocharis atropurpurea	Purple spike rush	Cyperaceae		E	G4G5	S1	Explorer
Eleocharis compressa	Flattened spike rush	Cyperaceae		T	G4	S2	Explorer
Eleocharis engelmannii	Engelmann's spike rush	Cyperaceae		SC	G4G5Q	S2S3	Explorer
Eleocharis equisetoides	Horsetail spike rush	Cyperaceae		SC	G4	S3	Explorer
Eleocharis geniculata	Spike-rush	Cyperaceae		X	G5	SX
Eleocharis melanocarpa	Black-fruited spike-rush	Cyperaceae		SC	G4	S3	Explorer Abstract
Eleocharis microcarpa	Small-fruited spike-rush	Cyperaceae		E	G5	S1	Explorer
Eleocharis nitida	Slender spike rush	Cyperaceae		E	G4	S1	Explorer
Eleocharis parvula	Dwarf spike-rush	Cyperaceae		E	G5	S1	Explorer
Eleocharis radicans	Spike rush	Cyperaceae		X	G5	SX	Explorer
Eleocharis tricostata	Three-ribbed spike rush	Cyperaceae		T	G4	S2	Explorer
Elymus glaucus	Blue wild-rye	Poaceae		SC	G5	S3	Explorer
Empetrum nigrum	Black crowberry	Empetraceae		T	G5	S2	Explorer Abstract
Equisetum telmateia	Giant horsetail	Equisetaceae		X	G5	SX	Explorer
Eragrostis capillaris	Love grass	Poaceae		SC	G5	SH	Explorer
Eragrostis pilosa	Small love grass	Poaceae		SC	G4	SH	Explorer
Erigeron acris	Fleabane	Asteraceae		T	G5	S1S2	Explorer
Erigeron hyssopifolius	Hyssop-leaved fleabane	Asteraceae		T	G5	S1	Explorer
Eryngium yuccifolium	Rattlesnake-master or button snakeroot	Apiaceae		T	G5	S2	Explorer
Euonymus atropurpurea	Wahoo	Celastraceae		SC	G5	S3	Explorer Abstract
Eupatorium fistulosum (Eutrochium fistulosum)	Hollow-stemmed Joe-pye weed	Asteraceae		T	G5?	S1	Explorer Abstract
Eupatorium sessilifolium	Upland boneset	Asteraceae		T	G5	S1	Explorer
Euphorbia commutata	Tinted spurge	Euphorbiaceae		T	G5	S1	Explorer Abstract
Euphrasia hudsoniana	Eyebright	Scrophulariaceae		T	G5?	S1	Explorer
Euphrasia nemorosa (Euphrasia arctica)	Eyebright	Scrophulariaceae		T	G5	S1	Explorer
Festuca scabrella (Festuca altaica var. scabrella)	Rough fescue	Poaceae		T	G5	S2S3	Explorer Abstract
Filipendula rubra	Queen-of-the-prairie	Rosaceae		T	G4G5	S2	Explorer Abstract
Fimbristylis puberula	Chestnut sedge	Cyperaceae		X	G5	SX	Explorer Abstract
Fraxinus profunda (Fraxinus tomentosa)	Pumpkin ash	Oleaceae		T	G4	S2	Explorer Abstract
Fuirena pumila	Umbrella-grass	Cyperaceae		T	G4	S2
Galearis spectabilis (Orchis spectabilis)	Showy orchis	Orchidaceae		T	G5	S2	Explorer Abstract
Galium kamtschaticum	Bedstraw	Rubiaceae		E	G5	S1	Explorer
Gentiana flavida (Gentiana alba)	White gentian	Gentianaceae		E	G4	S1	Explorer
Gentiana linearis	Narrow-leaved gentian	Gentianaceae		T	G4G5	S2	Explorer
Gentiana puberulenta (Gentiana puberula)	Downy gentian	Gentianaceae		E	G4G5	S1	Explorer
Gentiana saponaria	Soapwort gentian	Gentianaceae		X	G5	SX	Explorer
Gentianella quinquefolia	Stiff gentian	Gentianaceae		T	G5	S2	Explorer
Geum triflorum	Prairie smoke	Rosaceae		T	G5	S2S3	Explorer Abstract
Geum virginianum	Pale avens	Rosaceae		SC	G5	S1S2	Explorer
Gillenia trifoliata (Porteranthus trifoliatus)	Bowman's root	Rosaceae		E	G4G5	S1	Explorer
Glyceria acutiflora	Manna grass	Poaceae		X	G5	SX	Explorer
Glyceria melicaria	Slender manna grass	Poaceae		T	G5	S1	Explorer
Gnaphalium sylvaticum (Omalotheca sylvatica)	Woodland everlasting	Asteraceae		T	G4	S1	Explorer
Gratiola aurea (Gratiola lutea)	Hedge-hyssop	Scrophulariaceae		T	G5	S1S2	Explorer
Gratiola virginiana	Annual hedge hyssop	Scrophulariaceae		T	G5	S1	Explorer Abstract
Gymnocarpium jessoense	Northern oak fern	Dryopteridaceae		E	G5	S1	Explorer
Gymnocarpium robertianum	Limestone oak fern	Dryopteridaceae		T	G5	S2	Explorer Abstract
Hedyotis nigricans (Stenaria nigricans)	Hedyotis	Rubiaceae		X	G5	SX	Explorer
Hedysarum alpinum	Alpine sainfoin	Fabaceae		E	G5	S1	Explorer
Helianthus hirsutus	Whiskered sunflower	Asteraceae		SC	G5	S3	Explorer Abstract
Helianthus microcephalus	Small wood sunflower	Asteraceae		X	G5	SX	Explorer
Helianthus mollis	Downy sunflower	Asteraceae		T	G4G5	S2	Explorer
Hemicarpha micrantha (Lipocarpha micrantha)	Dwarf-bulrush	Cyperaceae		SC	G5	S3	Explorer
Hibiscus laevis (Hibiscus militaris)	Smooth rose-mallow	Malvaceae		X	G5	SX	Explorer
Hieracium paniculatum	Panicled hawkweed	Asteraceae		T	G5	S2	Explorer Abstract
Houstonia caerulea	Azure bluet	Rubiaceae		X	G5	SX	Explorer
Huperzia appalachiana	Mountain fir-moss	Lycopodiaceae		SC	G4G5	S2	Explorer
Huperzia selago (Lycopodium selago)	Fir clubmoss	Lycopodiaceae		SC	G5	S3	Explorer
Hybanthus concolor	Green violet	Violaceae		SC	G5	S3	Explorer
Hydrastis canadensis	Goldenseal	Ranunculaceae		T	G4	S2	Explorer Abstract
Hymenoxys herbacea (Tetraneuris herbacea)	Lakeside daisy	Asteraceae	LT	E	G3	S1	Explorer Abstract
Hypericum adpressum	Creeping St. John's-wort	Clusiaceae		T	G3	S1	Explorer
Hypericum gentianoides	Gentian-leaved St. John's-wort	Clusiaceae		SC	G5	S3	Explorer Abstract
Hypericum sphaerocarpum	Round-fruited St. John's-wort	Clusiaceae		E	G5	S1	Explorer
Ipomoea pandurata	Wild potato vine or man-of-the-earth	Convolvulaceae		T	G5	S2	Explorer
Iris lacustris	Dwarf lake iris	Iridaceae	LT	T	G3	S3	Explorer Abstract
Isoetes engelmannii	Engelmann's quilwort	Isoetaceae		E	G4	S1	Explorer
Isotria medeoloides	Smaller whorled pogonia	Orchidaceae	LT	X	G2	SX	Explorer
Isotria verticillata	Whorled pogonia	Orchidaceae		T	G5	S2	Explorer
Jeffersonia diphylla	Twinleaf	Berberidaceae		SC	G5	S3	Explorer
Juncus brachycarpus	Short-fruited rush	Juncaceae		T	G4G5	S1S2	Explorer Abstract
Juncus militaris	Bayonet rush	Juncaceae		T	G4	S1	Explorer
Juncus scirpoides	Scirpus-like rush	Juncaceae		T	G5	S2	Explorer Abstract
Juncus stygius	Moor rush	Juncaceae		T	G5	S1S2	Explorer
Juncus vaseyi	Vasey's rush	Juncaceae		T	G5?	S1S2	Explorer Abstract
Justicia americana	Water willow	Acanthaceae		T	G5	S2	Explorer
Kuhnia eupatorioides (Brickellia eupatorioides)	False boneset	Asteraceae		SC	G5	S2	Explorer
Lactuca floridana	Woodland lettuce	Asteraceae		T	G5	S2	Explorer
Lactuca pulchella (Mulgedium pulchellum)	Blue lettuce	Asteraceae		X	G5T5	SX	Explorer
Lechea minor	Least pinweed	Cistaceae		X	G5	SX	Explorer
Lechea pulchella (Lechea leggettii)	Leggett's pinweed	Cistaceae		T	G5	S1S2	Explorer
Lechea stricta	Erect pinweed	Cistaceae		SC	G4?	S1	Explorer
Lemna valdiviana	Pale duckweed	Lemnaceae		X	G5	SX	Explorer
Lespedeza procumbens	Trailing bush clover	Fabaceae		X	G5	SX	Explorer
Leucospora multifida (Conobea multifida)	Conobea	Scrophulariaceae		SC	G5	SNR	Explorer
Leymus mollis (Elymus mollis)	American dune wild-rye	Poaceae		SC	G5	S3	Explorer Abstract
Liatris punctata	Dotted blazing star	Asteraceae		X	G5	SX	Explorer
Liatris squarrosa	Plains blazing star	Asteraceae		X	G5	SX	Explorer
Linum sulcatum	Furrowed flax	Linaceae		SC	G5	S2S3	Explorer
Linum virginianum	Virginia flax	Linaceae		T	G4G5	S2	Explorer
Liparis liliifolia	Purple twayblade	Orchidaceae		SC	G5	S3	Explorer Abstract
Listera auriculata	Auricled twayblade	Orchidaceae		SC	G3G4	S2S3	Explorer
Lithospermum incisum	Narrow-leaved puccoon	Boraginaceae		X	G5	SX	Explorer
Lithospermum latifolium	Broad-leaved puccoon	Boraginaceae		SC	G4	S2	Explorer
Littorella uniflora (Littorella uniflora var. americana)	American shore-grass	Plantaginaceae		SC	G5	S2S3	Explorer
Lonicera involucrata	Black twinberry	Caprifoliaceae		T	G4G5T4T5	S2	Explorer
Ludwigia sphaerocarpa	Globe-fruited seedbox	Onagraceae		T	G5	S1	Explorer
Luzula parviflora	Small-flowered wood rush	Juncaceae		T	G5	S1	Explorer Abstract
Lycopodiella margueritae (Lycopodiella appressa)	Northern prostrate clubmoss	Lycopodiaceae		T	G2	S2	Explorer
Lycopodiella subappressa (Lycopodiella appressa)	Northern appressed clubmoss	Lycopodiaceae		SC	G2	S2	Explorer Abstract
Lycopus virginicus	Virginia water-horehound	Lamiaceae		T	G5	S2	Explorer Abstract
Lygodium palmatum	Climbing fern	Schizaeaceae		E	G4	S1	Explorer
Lysimachia hybrida	Swamp candles	Primulaceae		X	G5	SX	Explorer
Mertensia virginica	Virginia bluebells	Boraginaceae		E	G5	S1S2	Explorer Abstract
Mikania scandens	Mikania	Asteraceae		X	G5	SX	Explorer
Mimulus alatus	Winged monkey flower	Scrophulariaceae		X	G5	SX	Explorer Abstract
Mimulus guttatus	Western monkey flower	Scrophulariaceae		SC	G5	S1	Explorer
Mimulus michiganensis (Mimulus glabratus var. michiganensis)	Michigan monkey flower	Scrophulariaceae	LE	E	G5T1	S1	Explorer Abstract
Moehringia macrophylla (Arenaria macrophylla)	Big-leaf sandwort	Caryophyllaceae		T	G4	S1	Explorer
Morus rubra	Red mulberry	Moraceae		T	G5	S2	Explorer Abstract
Muhlenbergia cuspidata	Plains muhly	Poaceae		X	G4	SX	Explorer
Muhlenbergia richardsonis	Mat muhly	Poaceae		T	G5	S2	Explorer Abstract
Myrica pensylvanica	Northern bayberry	Myricaceae		T	G5	S2	Explorer
Myriophyllum alterniflorum	Alternate-leaved water-milfoil	Haloragaceae		SC	G5	S2S3	Explorer
Myriophyllum farwellii	Farwell's water milfoil	Haloragaceae		T	G5	S2	Explorer
Nelumbo lutea (Nelumbo pentapetala)	American lotus	Nelumbonaceae		T	G4	S2	Explorer
Nuphar pumila (Nuphar microphylla)	Small yellow pond lily	Nymphaeaceae		E	G5T4T5	S1S2	Explorer
Nymphaea leibergii (Nymphaea tetragona)	Pygmy water lily	Nymphaeaceae		E	G5	S1	Explorer
Onosmodium molle	Marbleweed	Boraginaceae		X	G4G5	SX	Explorer
Ophioglossum vulgatum (Ophioglossum pycnostichum)	Southeastern adder's-tongue	Ophioglossaceae		E	G5	S1	Explorer
Oplopanax horridus	Devil's club	Araliaceae		T	G4	S2	Explorer
Opuntia fragilis	Fragile prickly pear	Cactaceae		E	G4G5	S1	Explorer
Orobanche fasciculata	Broomrape	Orobanchaceae		T	G4	S2	Explorer Abstract
Oryzopsis canadensis (Piptatherum canadense)	Canada rice grass	Poaceae		T	G5	S2	Explorer Abstract
Osmorhiza depauperata (Osmorhiza obtusa)	Sweet Cicely	Apiaceae		T	G5	S2	Explorer
Oxalis violacea	Violet wood sorrel	Oxalidaceae		X	G5	SX	Explorer
Panax quinquefolius	Ginseng	Araliaceae		T	G3G4	S2S3	Explorer Abstract
Panicum longifolium (Panicum rigidulum var. pubescens)	Panic grass	Poaceae		T	G4	S2	Explorer
Panicum philadelphicum	Philadelphia panic-grass	Poaceae		T	GNR	S2	Explorer
Panicum verrucosum	Warty panic grass	Poaceae		T	G4	S1	Explorer
Parnassia palustris	Marsh grass-of-parnassus	Saxifragaceae		T	G5	S2	Explorer Abstract
Paronychia fastigiata	Low-forked chickweed	Caryophyllaceae		X	G5	SX	Explorer
Pellaea atropurpurea	Purple cliff brake	Pteridaceae		T	G5	S2	Explorer Abstract
Penstemon calycosus	Beard tongue	Scrophulariaceae		T	G5	S2	Explorer Abstract
Penstemon gracilis	Slender beard tongue	Scrophulariaceae		E	G5	S1	Explorer
Penstemon pallidus	Pale beard tongue	Scrophulariaceae		SC	G5	S3	Explorer
Petasites sagittatus (Petasites frigidus var. sagittatus)	Sweet coltsfoot	Asteraceae		T	G5	S1S2	Explorer Abstract
Phacelia franklinii	Franklin's phacelia	Hydrophyllaceae		T	G5	S1	Explorer Abstract
Phaseolus polystachios	Wild bean	Fabaceae		X	G5	SX	Explorer
Phleum alpinum	Mountain timothy	Poaceae		X	G5	SX	Explorer
Phlox bifida	Cleft phlox	Polemoniaceae		X	G5?	SX	Explorer
Phlox maculata	Wild sweet William	Polemoniaceae		T	G5	S1	Explorer
Phlox ovata (Phlox latifolia)	Wideflower phlox	Polemoniaceae		E	G4	S1	Explorer
Pinguicula vulgaris	Butterwort	Lentibulariaceae		SC	G5	S3	Explorer Abstract
Piperia unalascensis (Habenaria unalascensis)	Alaska orchid	Orchidaceae		SC	G5	S2S3	Explorer
Plantago cordata	Heart-leaved plantain	Plantaginaceae		E	G4	S1	Explorer Abstract
Platanthera ciliaris (Habenaria ciliaris)	Orange- or yellow-fringed orchid	Orchidaceae		E	G5	S1S2	Explorer Abstract
Platanthera leucophaea (Habenaria leucophaea)	Prairie white-fringed orchid	Orchidaceae	LT	E	G3	S1	Explorer Abstract
Poa alpina	Alpine bluegrass	Poaceae		T	G5	S1S2	Explorer Abstract
Poa canbyi (Poa secunda)	Canbyi's bluegrass	Poaceae		E	G4G5	S1	Explorer
Poa paludigena	Bog bluegrass	Poaceae		T	G3	S2	Explorer
Polemonium reptans	Jacob's ladder	Polemoniaceae		T	G5	S2	Explorer Abstract
Polygala cruciata	Cross-leaved milkwort	Polygalaceae		SC	G5	S3	Explorer
Polygala incarnata	Pink milkwort	Polygalaceae		X	G5	SX	Explorer Abstract
Polygonum careyi (Persicaria careyi)	Carey's smartweed	Polygonaceae		T	G4	S1S2	Explorer
Polygonum viviparum (Bistorta vivipara)	Alpine bistort	Polygonaceae		T	G5	S1S2	Explorer Abstract
Polymnia uvedalia (Smallanthus uvedalia)	Yellow-flowered leafcup	Asteraceae		T	G4G5	S1	Explorer Abstract
Polytaenia nuttallii	Prairie parsley	Apiaceae		X	G5	SX	Explorer
Populus heterophylla	Swamp or Black cottonwood	Salicaceae		E	G5	S1	Explorer Abstract
Potamogeton bicupulatus (Potamogeton capillaceus)	Waterthread pondweed	Potamogetonaceae		T	G4	S2	Explorer
Potamogeton confervoides	Alga pondweed	Potamogetonaceae		SC	G4	S3	Explorer Abstract
Potamogeton hillii	Hill's pondweed	Potamogetonaceae		T	G3	S2	Explorer Abstract
Potamogeton pulcher	Spotted pondweed	Potamogetonaceae		E	G5	S1	Explorer
Potamogeton vaseyi	Vasey's pondweed	Potamogetonaceae		T	G4	SH	Explorer
Potentilla paradoxa	Sand cinquefoil	Rosaceae		T	G5	SU	Explorer
Potentilla pensylvanica	Prairie cinquefoil	Rosaceae		T	G5	S1	Explorer
Prenanthes crepidinea	Nodding rattlesnake-root	Asteraceae		T	G4	SNR
Prosartes hookeri (Disporum hookeri)	Fairy bells	Liliaceae		E	G5	S2	Explorer Abstract
Prosartes maculata (Disporum maculatum)	Nodding mandarin	Liliaceae		X	G3G4	SX	Explorer
Prosartes trachycarpa (Disporum trachycarpum)	Northern fairy bells	Liliaceae		T	G5	S1	Explorer
Proserpinaca pectinata	Mermaid-weed	Haloragaceae		E	G5	S1	Explorer Abstract
Prunus alleghaniensis var. davisii	Alleghany or Sloe plum	Rosaceae		SC	G4T3Q	S3	Explorer Abstract
Pterospora andromedea	Pine-drops	Monotropaceae		T	G5	S2	Explorer Abstract
Pycnanthemum muticum	Mountain mint	Lamiaceae		T	G5	S1	Explorer
Pycnanthemum pilosum	Hairy mountain mint	Lamiaceae		T	G5T5	S2	Explorer
Pycnanthemum verticillatum	Whorled mountain mint	Lamiaceae		SC	G5	S2	Explorer Abstract
Quercus shumardii	Shumard's oak	Fagaceae		SC	G5	S2	Explorer
Ranunculus ambigens	Spearwort	Ranunculaceae		T	G4	SH	Explorer Abstract
Ranunculus cymbalaria	Seaside crowfoot	Ranunculaceae		T	G5	S1	Explorer
Ranunculus lapponicus	Lapland buttercup	Ranunculaceae		T	G5	S1S2	Explorer Abstract
Ranunculus macounii	Macoun's buttercup	Ranunculaceae		T	G5	S1	Explorer
Ranunculus rhomboideus	Prairie buttercup	Ranunculaceae		T	G5	S2	Explorer Abstract
Rhexia mariana (Rhexia mariana var. mariana)	Maryland meadow beauty	Melastomataceae		T	G5T5	S1S2	Explorer
Rhexia virginica	Meadow beauty	Melastomataceae		SC	G5	S3	Explorer Abstract
Rhynchospora macrostachya	Tall beakrush	Cyperaceae		SC	G4	S3S4	Explorer
Rhynchospora nitens (Psilocarya nitens)	Short-beak beak-rush	Cyperaceae		E	G4?	S1	Explorer
Rhynchospora recognita (Rhynchospora globularis)	Globe beak-rush	Cyperaceae		E	G5?	S1	Explorer
Rhynchospora scirpoides (Psilocarya scirpoides)	Bald-rush	Cyperaceae		T	G4	S2	Explorer
Ribes oxyacanthoides	Northern gooseberry	Grossulariaceae		SC	G5	S3	Explorer
Rubus acaulis (Rubus arcticus ssp. acaulis)	Dwarf raspberry	Rosaceae		E	G5T5	S1	Explorer
Rudbeckia subtomentosa	Sweet coneflower	Asteraceae		X	G5	SX	Explorer
Ruellia humilis	Hairy wild petunia	Acanthaceae		T	G5	S1	Explorer
Ruellia strepens	Smooth ruellia	Acanthaceae		E	G4G5	S1	Explorer
Rumex occidentalis	Western dock	Polygonaceae		E	G5	S1	Explorer
Ruppia maritima (Ruppia spiralis)	Widgeon grass	Ruppiaceae		T	G5	S1	Explorer
Sabatia angularis	Rosepink	Gentianaceae		T	G5	S2	Explorer Abstract
Sagina nodosa	Pearlwort	Caryophyllaceae		T	G5	S2	Explorer Abstract
Sagittaria montevidensis (Sagittaria calycina, Lophotocarpus calycinus)	Arrowhead	Alismataceae		T	G4G5	S1S2	Explorer
Salix pellita	Satiny willow	Salicaceae		SC	G5	S2	Explorer
Salix planifolia	Tea-leaved willow	Salicaceae		T	G5	SH	Explorer
Sanguisorba canadensis	Canadian burnet	Rosaceae		E	G5	S1	Explorer
Sarracenia purpurea f. heterophylla	Yellow pitcher plant	Sarraceniaceae		T	G5T1T2Q	S1	Explorer Abstract
Saxifraga paniculata	Encrusted saxifrage	Saxifragaceae		T	G5	S1	Explorer Abstract
Saxifraga tricuspidata	Prickly saxifrage	Saxifragaceae		T	G4G5	S2	Explorer Abstract
Schoenoplectus americanus (Scirpus olneyi)	Three-square bulrush	Cyperaceae		E	G5	S1	Explorer
Schoenoplectus hallii (Scirpus hallii)	Hall's bulrush	Cyperaceae		T	G2G3	S2	Explorer Abstract
Scirpus clintonii (Trichophorum clintonii)	Clinton's bulrush	Cyperaceae		SC	G4	S3	Explorer
Scirpus torreyi (Schoenoplectus torreyi)	Torrey's bulrush	Cyperaceae		SC	G5?	S2S3	Explorer
Scleria pauciflora	Few-flowered nut rush	Cyperaceae		E	G5	S1	Explorer Abstract
Scleria reticularis	Netted nut rush	Cyperaceae		T	G4	S2	Explorer
Scleria triglomerata	Tall nut rush	Cyperaceae		SC	G5	S3	Explorer
Scutellaria elliptica	Hairy skullcap	Lamiaceae		SC	G5	S3	Explorer
Scutellaria incana	Skullcap	Lamiaceae		X	G5	SX	Explorer
Scutellaria nervosa	Skullcap	Lamiaceae		E	G5	S1	Explorer
Scutellaria ovata	Forest skullcap	Lamiaceae		T	G5	SX	Explorer
Scutellaria parvula	Small skullcap	Lamiaceae		T	G4	S2	Explorer
Senecio congestus (Tephroseris palustris)	Marsh fleabane	Asteraceae		X	G5	SX	Explorer
Senecio indecorus (Packera indecora)	Northern ragwort	Asteraceae		T	G5	S1	Explorer Abstract
Silene nivea	Evening campion	Caryophyllaceae		T	G4?	SNR	Explorer
Silene stellata	Starry campion	Caryophyllaceae		T	G5	S2	Explorer
Silene virginica	Fire pink	Caryophyllaceae		E	G5	S1	Explorer
Silphium integrifolium	Rosinweed	Asteraceae		T	G5	S2	Explorer
Silphium laciniatum	Compass plant	Asteraceae		T	G5	S1S2	Explorer Abstract
Silphium perfoliatum	Cup plant	Asteraceae		T	G5	S2	Explorer Abstract
Sisyrinchium atlanticum	Atlantic blue-eyed-grass	Iridaceae		T	G5	S2	Explorer
Sisyrinchium fuscatum (Sisyrinchium farwellii)	Farwell's blue-eyed-grass	Iridaceae		X	G5?	SX
Sisyrinchium hastile (Sisyrinchium albidum)	Blue-eyed-grass	Iridaceae		X	GUGHQ	SX	Explorer Abstract
Sisyrinchium strictum	Blue-eyed-grass	Iridaceae		SC	G2Q	S2	Explorer
Smilax herbacea	Smooth carrion-flower	Smilacaceae		SC	G5	S3	Explorer
Solidago bicolor	White goldenrod	Asteraceae		E	G5	S1	Explorer
Solidago houghtonii	Houghton's goldenrod	Asteraceae	LT	T	G3	S3	Explorer Abstract
Solidago missouriensis	Missouri goldenrod	Asteraceae		T	G5	S2	Explorer
Spiranthes ovalis	Lesser ladies'-tresses	Orchidaceae		T	G5?	S1	Explorer
Sporobolus clandestinus	Dropseed	Poaceae		E	G5	S1	Explorer Abstract
Sporobolus heterolepis	Prairie dropseed	Poaceae		SC	G5	S3	Explorer Abstract
Stellaria crassifolia	Fleshy stitchwort	Caryophyllaceae		E	G5	S1	Explorer
Stellaria longipes	Stitchwort	Caryophyllaceae		SC	G5	S2	Explorer Abstract
Strophostyles helvula	Trailing wild Bean	Fabaceae		SC	G5	S3	Explorer
Subularia aquatica	Awlwort	Brassicaceae		E	G5	S1	Explorer
Tanacetum huronense (Tanacetum bipinnatum ssp. huronense)	Lake Huron tansy	Asteraceae		T	G5T4T5	S3	Explorer Abstract
Tipularia discolor	Cranefly orchid	Orchidaceae		E	G4G5	S1	Explorer
Tofieldia pusilla	False asphodel	Liliaceae		T	G5	S2	Explorer
Tomanthera auriculata (Agalinis auriculata)	Eared foxglove	Scrophulariaceae		X	G3	SX	Explorer
Tradescantia bracteata	Long-bracted spiderwort	Commelinaceae		X	G5	SX	Explorer
Tradescantia virginiana	Virginia spiderwort	Commelinaceae		SC	G5	S2	Explorer
Trichostema brachiatum (Isanthus brachiatus)	False pennyroyal	Lamiaceae		T	G5	S1	Explorer
Trichostema dichotomum	Bastard pennyroyal	Lamiaceae		T	G5	S2	Explorer Abstract
Trillium nivale	Snow trillium	Liliaceae		T	G4	S2	Explorer
Trillium recurvatum	Prairie trillium	Liliaceae		T	G5	S2S3	Explorer Abstract
Trillium sessile	Toadshade	Liliaceae		T	G4G5	S2S3	Explorer
Trillium undulatum	Painted trillium	Liliaceae		E	G5	S1S2	Explorer Abstract
Triphora trianthophora	Nodding pogonia or three birds orchid	Orchidaceae		T	G3G4	S1	Explorer
Triplasis purpurea	Sand grass	Poaceae		SC	G4G5	S2	Explorer
Trisetum spicatum	Downy oat-grass	Poaceae		SC	G5	S2S3	Explorer Abstract
Utricularia inflata (Utricularia radiata)	Floating bladderwort	Lentibulariaceae		E	G5	S1	Explorer
Utricularia subulata	Bladderwort	Lentibulariaceae		T	G5	S1	Explorer Abstract
Vaccinium cespitosum	Dwarf bilberry	Ericaceae		T	G5	S1S2	Explorer Abstract
Vaccinium uliginosum	Alpine blueberry	Ericaceae		T	G5	S2	Explorer
Vaccinium vitis-idaea	Mountain cranberry	Ericaceae		E	G5	S1	Explorer
Valeriana edulis var. ciliata (Valeriana ciliata)	Edible valerian	Valerianaceae		T	G5T3	S2	Explorer
Valerianella chenopodiifolia	Goosefoot corn salad	Valerianaceae		T	G5	S1	Explorer
Valerianella umbilicata	Corn salad	Valerianaceae		T	G3G5	S2	Explorer
Viburnum edule	Squashberry or mooseberry	Caprifoliaceae		T	G5	S2S3	Explorer Abstract
Viburnum prunifolium	Black haw	Caprifoliaceae		SC	G5	S3	Explorer
Viola epipsila	Northern marsh violet	Violaceae		E	G4	SH	Explorer
Viola novae-angliae	New England violet	Violaceae		T	G4Q	S2	Explorer
Viola pedatifida	Prairie birdfoot violet	Violaceae		T	G5	S1	Explorer
Vitis vulpina	Frost grape	Vitaceae		T	G5	S1S2	Explorer
Wisteria frutescens	Wisteria	Fabaceae		T	G5	S1	Explorer
Wolffia papulifera (Wolffia brasiliensis, Wolffia punctata)	Watermeal	Lemnaceae		T	G4	S1	Explorer Abstract
Woodsia alpina	Northern woodsia	Dryopteridaceae		E	G4	S1	Explorer
Woodsia obtusa	Blunt-lobed woodsia	Dryopteridaceae		T	G5	S1S2	Explorer
Woodwardia areolata	Netted chain-fern	Blechnaceae		X	G5	SX	Explorer
Zizania aquatica var. aquatica	Wild rice	Poaceae		T	G5T5	S2S3	Explorer Abstract
Zizia aptera	Prairie golden alexanders	Apiaceae		T	G5	S1S2	Explorer

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