ADMINISTRATIVE CODE

TITLE 17: CONSERVATION
CHAPTER I: DEPARTMENT OF NATURAL RESOURCES
SUBCHAPTER c: ENDANGERED SPECIES
PART 1050 ILLINOIS LIST OF ENDANGERED AND THREATENED FLORA

Section 1050.10 Official List

Section 1050.20 Definitions (Repealed)

Section 1050.25 Criteria Used For Listing

Section 1050.30 Endangered Flora of Illinois

Section 1050.40 Threatened Flora of Illinois

AUTHORITY: Implementing and authorized by Section 7 of the Illinois Endangered Species Protection Act [520 ILCS 10].

SOURCE: Adopted at 4 Ill. Reg. 22, p. 209, effective May 20, 1980 unless otherwise noted; amended at 5 Ill. Reg. 10293, effective September 30, 1981; codified at 6 Ill. Reg. 2593; amended at 8 Ill. Reg. 13713, effective July 25, 1984; amended at 13 Ill. Reg. 3755, effective March 13, 1989; amended at 14 Ill. Reg. 6123, effective April 17, 1990; amended at 17 Ill. Reg. 10781, effective July 1, 1993; amended at 18 Ill. Reg. 1142, effective January 18, 1994; recodified by changing the agency name from Department of Conservation to Department of Natural Resources at 20 Ill. Reg. 9389; amended at 22 Ill. Reg. 21902, effective December 3, 1998; amended at 28 Ill. Reg. 12904, effective September 1, 2004; amended at 33 Ill. Reg. 14748, effective October 30, 2009; amended at 39 Ill. Reg. 7993, effective May 19, 2015; amended at 44 Ill. Reg. 10145, effective May 28, 2020.

Section 1050.10 Official List

The lists appearing in Sections 1050.30 and 1050.40 have been adopted by the Illinois Endangered Species Protection Board as the Official Lists of Endangered and Threatened Flora of Illinois.

(Source: Amended at 22 Ill. Reg. 21902, effective December 3, 1998)

Section 1050.20 Definitions (Repealed)

(Source: Repealed at 39 Ill. Reg. 7993, effective May 19, 2015)

Section 1050.25 Criteria Used For Listing

a) A species shall be included on the Official List when one or more of the following criteria exists:

1) Species or subspecies designated as federally endangered or threatened.

2) Species proposed for Federal Endangered or Threatened status that occur in Illinois.

3) Species that formerly were widespread in Illinois but have been nearly extirpated from the State due to habitat destruction, collecting, or other pressures resulting from the development of Illinois.

4) Species that exhibit very restricted geographic ranges of which Illinois is a part.

5) Species that exhibit restricted habitats or low populations in Illinois.

6) Species that are significant disjuncts in Illinois, i.e., the Illinois population is far removed from the rest of the species' range.

b) A species will be removed from the Official List if it no longer fulfills one or more of the criteria in subsection (a), except for a species that no longer fulfills the criteria because it no longer grows in Illinois. The determination will be made pursuant to Section 7 of the Endangered Species Protection Act [520 ILCS 10/7].

(Source: Amended at 39 Ill. Reg. 7993, effective May 19, 2015)

Section 1050.30 Endangered Flora of Illinois

All federally designated endangered or threatened animal species and subspecies have been automatically listed as endangered or threatened under the Illinois Endangered Species Protection Act and placed on the Illinois List by the Board and are protected under the Act even though their names do not appear in this Section. Only those federally designated endangered or threatened animal species and subspecies known to occur in Illinois are designated as Illinois‑endangered or Illinois-threatened by the Board and their names appear in this Section. Users should refer to the US Fish and Wildlife Service website at http://www.fws.gov/

endangered/for a complete listing of all federally designated endangered and threatened species and subspecies.

SCIENTIFIC NAME	COMMON NAME
EQUISETACEAE
Equisetum scirpoides	Dwarf Scouring Rush
Equisetum sylvaticum	Woodland Horsetail
HYMENOPHYLLACEAE
Vandenboschia boschiana	Filmy fern
ISOETACEAE
Isoetes butleri	Butler's Quillwort
LYCOPODIACEAE
Dendrolycopodium dendroideum	Ground Pine
Dendrolycopodium hickeyi	Hickey's Groundpine
Lycopodium clavatum	Running Pine
Lycopodiella inundata	Bog Clubmoss
OPHIOGLOSSACEAE
Botrychium campestre	Prairie Moonwort
Botrychium matricariifolium	Daisyleaf Grape Fern
Botrychium multifidum	Northern Grape Fern
Botrychium simplex	Dwarf Grape Fern
Sceptridium biternatum	Southern Grape Fern
POLYPODIACEAE
Asplenium bradleyi	Bradley's Spleenwort
Asplenium resiliens	Black Spleenwort
Cystopteris laurentiana	Laurentian Fragile Fern
Dennstaedtia punctilobula	Hay-scented Fern
Dryopteris celsa	Log Fern
Gymnocarpium dryopteris	Oak Fern
Gymnocarpium robertianum	Scented Oak Fern
Phegopteris connectilis	Long Beech Fern
Thelypteris noveboracensis	New York Fern
Woodsia ilvensis	Rusty Woodsia
CUPRESSACEAE
Juniperus horizontalis	Trailing Juniper
PINACEAE
Larix laricina	Tamarack
Pinus banksiana	Jack Pine
Pinus echinata	Shortleaf Pine
Pinus resinosa	Red Pine
ALISMATACEAE
Echinodorus tenellus	Small Burhead
Sagittaria australis	Arrowhead
ARACEAE
Calla palustris	Water Arum
COMMELINACEAE
Tradescantia bracteata	Prairie Spiderwort
CYPERACEAE
Carex alata	Winged Sedge
Carex arkansana	Arkansas Sedge
Carex brunnescens	Brownish Sedge
Carex canescens	Silvery Sedge
Carex chordorrhiza	Cordroot Sedge
Carex crawfordii	Crawford's Sedge
Carex cumulata	Sedge
Carex debilis	White-edge Sedge
Carex decomposita	Cypress-knee Sedge
Carex diandra	Sedge
Carex disperma	Shortleaf Sedge
Carex echinata	Sedge
Carex formosa	Sedge
Carex garberi	Elk Sedge
Carex gigantea	Large Sedge
Carex heliophila	Plains Sedge
Carex intumescens	Swollen Sedge
Carex nigromarginata	Black-edged Sedge
Carex oligosperma	Few-seeded Sedge
Carex opaca	Opaque Oval Sedge
Carex physorhyncha	Bellow's Beak Sedge
Carex plantaginea	Plantain-leaved Sedge
Carex reniformis	Reniform Sedge
Carex straminea	Eastern Straw Sedge
Carex trisperma	Three-seeded Sedge
Carex tuckermanii	Tuckerman's Sedge
Eleocharis olivacea	Capitate Spikerush
Eleocharis pauciflora	Few-flowered Spikerush
Eriophorum virginicum	Rusty Cotton Grass
Fimbristylis vahlii	Vahl's Fimbry
Rhynchospora alba	Beaked Rush
Rhynchospora glomerata	Clustered Beak Rush
Schoenoplectus purshianus	Pursh's Bulrush
Schoenoplectus smithii	Smith's Bulrush
Scirpus hattorianus	Bulrush
Scirpus microcarpus	Small-fruited Bulrush
Scirpus polyphyllus	Leafy Bulrush
Scleria muhlenbergii	Muhlenberg's Nut Rush
Scleria pauciflora	Carolina Whipgrass
Trichophorum cespitosum	Tufted Bulrush
IRIDACEAE
Sisyrinchium atlanticum	Eastern Blue-eyed Grass
Sisyrinchium montanum	Mountain Blue-eyed Grass
JUNCACEAE
Juncus vaseyi	Vasey's Rush
Luzula acuminata	Hairy Woodrush
LILIACEAE
Camassia angusta	Wild Hyacinth
Chamaelirium luteum	Fairy Wand
Medeola virginiana	Indian Cucumber Root
Melanthium virginicum	Virginia Bunchflower
Polygonatum pubescens	Downy Solomon's Seal
Trillium cernuum	Nodding Trillium
Trillium erectum	Ill-scented Trillium
Trillium viride	Green Trillium
Zigadenus elegans	White Camass
ORCHIDACEAE
Calopogon oklahomensis	Oklahoma Grass Pink Orchid
Calopogon tuberosus	Grass Pink Orchid
Corallorhiza maculata	Spotted Coral-root Orchid
Cypripedium acaule	Moccasin Flower
Cypripedium parviflorum	Small Yellow Lady's Slipper
Cypripedium reginae	Showy Lady's Slipper
Hexalectris spicata	Crested Coralroot Orchid
Isotria medeoloides*	Small Whorled Pogonia
Isotria verticillata	Whorled Pogonia
Platanthera ciliaris	Orange Fringed Orchid
Platanthera clavellata	Wood Orchid
Platanthera leucophaea*	Eastern Prairie Fringed Orchid
Platanthera psycodes	Purple Fringed Orchid
Pogonia ophioglossoides	Snake-mouth
Spiranthes lucida	Yellow-lipped Ladies' Tresses
Spiranthes vernalis	Spring Ladies' Tresses
POACEAE
Avenella flexuosa	Hairgrass
Beckmannia syzigachne	American Slough Grass
Bouteloua gracilis	Blue Grama
Calamagrostis insperata	Hollow Reed Grass
Dichanthelium boreale	Northern Panic Grass
Dichanthelium joorii	Panic Grass
Dichanthelium portoricense	Hemlock Panic Grass
Dichanthelium ravenelii	Ravenel's Panic Grass
Dichanthelium yadkinense	Panic Grass
Elymus trachycaulus	Bearded Wheat Grass
Glyceria arkansana	Arkansas Manna Grass
Melica mutica	Two-Flowered Melic Grass
Poa alsodes	Grove Bluegrass
Poa languida	Weak Bluegrass
Poa wolfii	Wolf's Bluegrass
Schizachne purpurascens	False Melic Grass
Torreyochloa pallida	Pole Manna-Grass
PONTERDERIACEAE
Heteranthera reniformis	Mud Plantain
POTAMOGETONACEAE
Potamogeton praelongus	White-stemmed Pondweed
Potamogeton pulcher	Spotted Pondweed
Potamogeton robbinsii	Fern Pondweed
Potamogeton strictifolius	Stiff Pondweed
SPARGANIACEAE
Sparganium americanum	American Bur-reed
Sparganium emersum	Green-fruited Bur-reed
ACANTHACEAE
Justicia ovata	Water Willow
ADOXACEAE
Adoxa moschatellina	Moschatel
AMARANTHACEAE
Iresine rhizomatosa	Bloodleaf
APIACEAE
Conioselinum chinense	Hemlock Parsley
Cynosciadium digitatum	Cynosciadium
Eryngium prostratum	Eryngo
Ptilimnium nuttallii	Mock Bishop's Weed
Sanicula smallii	Southern Black Snakeroot
ASCLEPIADACEAE
Asclepias lanuginosa	Wooly Milkweed
Asclepias meadii*	Mead's Milkweed
Asclepias ovalifolia	Oval Milkweed
Asclepias stenophylla	Narrow-leaved Green Milkweed
Matelea decipiens	Climbing Milkweed
ASTERACEAE
Artemisia dracunculus	Dragon Wormwood
Cirsium pitcheri*	Pitcher's (Dune) Thistle
Eupatorium hyssopifolium	Hyssop-leaved Thoroughwort
Helianthus angustifolius	Narrow-leaved Sunflower
Helianthus giganteus	Tall Sunflower
Hymenopappus scabiosaeus	Old Plainsman
Megalodonta beckii	Water Marigold
Melanthera nivea	White Melanthera
Nothocalais cuspidata	Prairie Dandelion
Tetraneuris herbacea*	Lakeside Daisy
BETULACEAE
Alnus incana subsp. rugosa	Speckled Alder
Betula alleghaniensis	Yellow Birch
BORAGINACEAE
Hackelia deflexa var. americana	Stickseed
Heliotropium tenellum	Slender Heliotrope
BRASSICACEAE
Cardamine pratensis var. palustris	Cuckoo Flower
Draba cuneifolia	Whitlow Grass
Physaria ludoviciana	Silvery Bladderpod
CACTACEAE
Opuntia fragilis	Fragile Prickly Pear
CAPPARIDACEAE
Polanisia jamesii	James' Clammyweed
CAPRIFOLIACEAE
Lonicera dioica var. glaucescens	Red Honeysuckle
Lonicera flava	Yellow Honeysuckle
Sambucus racemosa subsp. pubens	Red-berried Elder
Symphoricarpos albus var. albus	Snowberry
CARYOPHYLLACEAE
Silene ovata	Ovate Catchfly
Silene regia	Royal Catchfly
Stellaria pubera	Great Chickweed
CISTACEAE
Hudsonia tomentosa	False Heather
Lechea intermedia	Savanna Pinweed
CLUSIACEAE
Hypericum adpressum	Shore St. John's Wort
Hypericum kalmianum	Kalm's St. John's Wort
CONVOLVUACEAE
Stylisma pickeringii	Patterson's Bindweed
CORNACEAE
Cornus canadensis	Bunchberry
DROSERACEAE
Drosera rotundifolia	Round-leaved Sundew
ELAEAGNACEAE
Shepherdia canadensis	Buffaloberry
ERICACEAE
Andromeda glaucophylla	Bog Rosemary
Arctostaphylos uva-ursi	Bearberry
Vaccinium corymbosum	Highbush Blueberry
Vaccinium macrocarpon	Large Cranberry
Vaccinium oxycoccos	Small Cranberry
Vaccinium stamineum	Deerberry
EUPHORBIACEAE
Chamaesyce polygonifolia	Seaside Spurge
Euphorbia spathulata	Spurge
FABACEAE
Amorpha nitens	Smooth False Indigo
Astragalus crassicarpus var. trichocalyx	Large Ground Plum
Astragalus distortus	Bent Milk Vetch
Astragalus tennesseensis	Tennessee Milk Vetch
Baptisia tinctoria	Yellow Wild Indigo
Cladrastis lutea	Yellowwood
Dalea foliosa **	Leafy Prairie Clover
Galactia mohlenbrockii	Boykin's Dioclea
Lespedeza leptostachya*	Prairie Bush Clover
Mimosa nuttallii	Cat's Claw
FAGACEAE
Quercus texana	Nuttall's Oak
GENTIANACEAE
Bartonia paniculata	Screwstem
Sabatia campestris	Prairie Rose Gentian
GERANIACEAE
Geranium bicknellii	Northern Cranesbill
HYDROPHYLLACEAE
Hydrolea uniflora	One-flowered Hydrolea
Nemophila triloba	Baby Blue-Eyes
Phacelia gilioides	Ozark Phacelia
JUGLANDACEAE
Carya pallida	Pale Hickory
Juglans cinerea	Butternut
LENTIBULARIACEAE
Utricularia cornuta	Horned Bladderwort
Utricularia minor	Small Bladderwort
Utricularia subulata	Hair Bladderwort
LOASACEAE
Mentzelia oligosperma	Stickleaf
MALVACEAE
Iliamna remota	Kankakee Mallow
Malvastrum hispidum	False Mallow
MELASTOMACEAE
Rhexia mariana	Dull Meadow Beauty
MYRICACEAE
Comptonia peregrina	Sweetfern
NYCTAGINACEAE
Mirabilis hirsuta	Hairy Umbrella-wort
ONAGRACEAE
Circaea alpina	Small Enchanter's Nightshade
OROBANCHACEAE
Orobanche fasciculata	Clustered Broomrape
PAPAVERACEAE
Corydalis aurea	Golden Corydalis
Corydalis halei	Hale's Corydalis
Corydalis sempervirens	Pink Corydalis
PLANTAGINACEAE
Plantago cordata	Heart-leaved Plantain
POLEMONIACEAE
Phlox pilosa subsp. sangamonensis	Sangamon Phlox
POLYGALACEAE
Polygala incarnata	Pink Milkwort
POLYGONACEAE
Polygonum careyi	Carey's Heartsease
Tracaulon arifolium	Halberd-leaved Tearthumb
PORTULACACEAE
Phemeranthus calycinus	Fameflower
PRIMULACEAE
Lysimachia radicans	Creeping Loosestrife
Primula mistassinica	Bird's-eye Primrose
Trientalis borealis	Star-flower
PYROLACEAE
Chimaphila maculata	Spotted Wintergreen
Chimaphila umbellata	Pipsissewa
RANUNCULACEAE
Actaea podocarpa	American Bugbane
Actaea racemosa	False Bugbane
Actaea rubifolia	Black Cohosh
Clematis crispa	Blue Jasmine
Clematis viorna	Leatherflower
Delphinium carolinianum	Hill Prairie Larkspur
Ranunculus rhomboideus	Prairie Buttercup
RHAMNACEAE
Berchemia scandens	Supple Jack
Ceanothus herbaceus	Redroot
Rhamnus alnifolia	Alder Buckthorn
ROSACEAE
Amelanchier sanguinea	Shadbush
Malus angustifolia	Narrow-leaved Crabapple
Rosa acicularis	Bristly Rose
Sanguisorba canadensis	American Burnet
Sorbus americana	American Mountain Ash
RUBIACEAE
Galium virgatum	Dwarf Bedstraw
SALICACEAE
Populus balsamifera	Balsam Poplar
Salix serissima	Autumn Willow
Salix syrticola	Dune Willow
SAPOTACEAE
Bumelia lanuginosa	Wooly Buckthorn
SARRACENIACEAE
Sarracenia purpurea	Pitcher Plant
SAXIFRAGACEAE
Ribes hirtellum	Northern Gooseberry
Micranthes virginiensis	Early Saxifrage
SCROPHULARIACEAE
Castilleja sessiliflora	Downy Yellow Painted Cup
Collinsia violacea	Violet Collinsia
Gratiola quartermaniae	Hedge Hyssop
Mimulus glabratus	Yellow Monkey Flower
Penstemon grandifloras	Large Flowered Beard Tongue
Penstemon tubaeflorus	Tube Beard Tongue
Veronica americana	American Brooklime
STYRACACEAE
Halesia carolina	Silverbell Tree
Styrax grandifolius	Bigleaf Snowbell Bush
TILIACEAE
Tilia heterophylla	White Basswood
ULMACEAE
Ulmus thomasii	Rock Elm
VALERIANACEAE
Valeriana uliginosa	Marsh Valerian
Valerianella chenopodifolia	Corn Salad
Valerianella umbilicata	Corn Salad
VIOLACEAE
Viola blanda	Hairy White Violet
Viola canadensis	Canada Violet
Viola primulifolia	Primrose Violet

* Federally designated threatened species

** Federally designated endangered species

(Source: Amended at 44 Ill. Reg. 10145, effective May 28, 2020)

Section 1050.40 Threatened Flora of Illinois

All federally designated endangered or threatened plant species and subspecies have been automatically placed on the Illinois List by the Board and are protected under the Illinois Endangered Species Protection Act even though their names do not appear in this Part. Only those federally designated endangered or threatened plant species and subspecies known to occur in Illinois are designated as Illinois-endangered or Illinois-threatened by the Board and their names appear in this Part. Users should refer to the US Fish and Wildlife Service at www.fws.gov/endangered/ for a complete listing of all federally designated endangered and threatened species and subspecies.

SCIENTIFIC NAME	COMMON NAME
PHYSCIACEAE
Phaeophyscia leana	Lea's Bog Lichen
EQUISETACEAE
Equisetum pratense	Meadow Horsetail
LYCOPODIACEAE
Huperzia porophila	Cliff Clubmoss
CUPRESSACEAE
Juniperus communis	Ground Juniper
CYPERACEAE
Carex atlantica	Sedge
Carex aurea	Golden Sedge
Carex bromoides	Sedge
Carex cryptolepis	Yellow Sedge
Carex oxylepis	Sharp-scaled Sedge
Carex prasina	Drooping Sedge
Carex viridula	Little Green Sedge
Carex willdenowii	Willdenow's Sedge
Cyperus grayoides	Umbrella Sedge
Cyperus lancastriensis	Galingale
Eleocharis rostellata	Beaked Spike Rush
Schoenoplectus hallii	Hall's Bulrush
JUNCAGINACEAE
Triglochin maritima	Common Bog Arrowgrass
Triglochin palustris	Slender Bog Arrowgrass
LILIACEAE
Stenanthium gramineum	Grass-leaved Lily
Tofieldia glutinosa	False Asphodel
ORCHIDACEAE
Platanthera flava	Tubercled Orchid
POACEAE
Ammophila breviligulata	Marram Grass
Festuca paradoxa	Cluster Fescue
POTAMOGETONACEAE
Potamogeton gramineus	Grass-leaved Pondweed
ASTERACEAE
Aster furcatus	Forked Aster
Boltonia decurrens*	Decurrent False Aster
Rudbeckia missouriensis	Missouri Orange Coneflower
Solidago sciaphila	Cliff Goldenrod
BRASSICAEAE
Cakile edentula var. lacustris	Sea Rocket
CAPRIFOLIACEAE
Viburnum molle	Arrowwood
CARYOPHYLLACEAE
Minuartia patula	Slender Sandwort
CELASTRACEAE
Euonymus americanus	American Strawberry Bush
CRASSULACEAE
Hyloteliphium telephioides	American Orpine
CUCURBITACEAE
Melothria pendula	Squirting Cucumber
DROSERACEAE
Drosera intermedia	Narrow-leaved Sundew
ERICACEAE
Chamaedaphne calyculata	Leatherleaf
FABACEAE
Lathryus ochroleucus	Pale Vetchling
Trifolium reflexum	Buffalo Clover
FAGACEAE
Quercus montana	Rock Chestnut Oak
Quercus phellos	Willow Oak
JUGLANDACEAE
Carya aquatica	Water Hickory
JUNCACEAE
Juncus alpinoarticulatus	Richardson's Rush
LAMIACEAE
Monarda clinopodia	White Bergamot
Salvia azurea	Blue Sage
Synandra hispidula	Hairy Synandra
LENTIBULARIACEAE
Utricularia intermedia	Flat-leaved Bladderwort
MENYANTHACEAE
Menyanthes trifoliata	Buckbean
ONAGRACEAE
Epilobium strictum	Downy Willow Herb
OROBANCHACEAE
Orobanche ludoviciana	Broomrape
OXALIDACEAE
Oxalis illinoensis	Illinois Wood Sorrel
PORTULACACEAE
Phemeranthus parviflorus	Small Flower-of-an-hour
PRIMULACEAE
Dodecatheon frenchii	French's Shooting Star
RANUNCULACEAE
Ranunculus harveyi	Harvey's Buttercup
ROSACEAE
Amelanchier interior	Shadbush
Filipendula rubra	Queen-of-the-Prairie
Rubus odoratus	Purple-flowering Raspberry
Rubus pubescens	Dwarf Raspberry
Rubus schneideri	Bristly Blackberry
SAXIFRAGACEAE
Sullivantia sullivantii	Sullivantia
SCROPHULARIACEAE
Agalinis skinneriana	Pale False Foxglove
Besseya bullii	Kitten Tails
Buchnera americana	Bluehearts
Veronica scutellata	Marsh Speedwell
STYRACACEAE
Styrax americana	Storax
ULMACEAE
Planera aquatica	Water Elm
URTICACEAE
Urtica chamaedryoides	Nettle

* Federally designated threatened species

** Federally designated endangered species.

(Source: Amended at 44 Ill. Reg. 10145, effective May 28, 2020)