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Section 1050.20 Definitions (Repealed)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

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 1050.10  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)

TITLE 17: CONSERVATION
CHAPTER I: DEPARTMENT OF NATURAL RESOURCES
SUBCHAPTER c: ENDANGERED SPECIES
PART 1050 ILLINOIS LIST OF ENDANGERED AND THREATENED FLORA
SECTION 1050.20 DEFINITIONS (REPEALED)

 

Section 1050.20  Definitions (Repealed)

 

(Source:  Repealed at 39 Ill.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

TITLE 17: CONSERVATION
CHAPTER I: DEPARTMENT OF NATURAL RESOURCES
SUBCHAPTER c: ENDANGERED SPECIES
PART 1050 ILLINOIS LIST OF ENDANGERED AND THREATENED FLORA
SECTION 1050.25 CRITERIA USED FOR LISTING

 

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)

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 1050.30 ENDANGERED FLORA OF ILLINOIS

 

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 https://www.fws.gov/program/endangered-species for a complete listing of all federally designated endangered and threatened species and subspecies.

 

SCIENTIFIC NAME                           COMMON NAME

 

a)         FERNS AND ALLIES

 

Asplenium bradleyi

Bradley's Spleenwort

Asplenium resiliens

Black Spleenwort

Botrychium campestre

Prairie Moonwort

Botrychium matricariifolium

Daisyleaf Grape Fern

Botrychium simplex

Dwarf Grape Fern

Dendrolycopodium dendroideum

Ground Pine

Dendrolycopodium hickeyi

Hickey's Groundpine

Dennstaedtia punctilobula

Hay-scented Fern

Dryopteris celsa

Log Fern

Equisetum scirpoides

Dwarf Scouring Rush

Equisetum sylvaticum

Woodland Horsetail

Gymnocarpium dryopteris

Oak Fern

Isoetes butleri

Butler's Quillwort

Lycopodiella inundata

Bog Clubmoss

Lycopodium clavatum

Running Pine

Phegopteris connectilis

Long Beech Fern

Sceptridium biternatum

Southern Grape Fern

Sceptridium multifidum

Northern Grape Fern

Thelypteris noveboracensis

New York Fern

Vandenboschia boschiana

Filmy Fern

Woodsia ilvensis

Rusty Woodsia

 

b)         GYMNOSPERMS

 

Juniperus communis

Ground Juniper

Juniperus horizontalis

Trailing Juniper

Larix laricina

Tamarack

Pinus banksiana

Jack Pine

Pinus echinata

Shortleaf Pine

Pinus resinosa

Red Pine

 

c)         ANGIOSPERMS – DICOTS

 

Actaea podocarpa

American Bugbane

Actaea racemosa

False Bugbane

Actaea rubifolia

Black Cohosh

Adoxa moschatellina

Moschatel

Alnus incana subsp. rugosa

Speckled Alder

Amelanchier sanguinea

Shadbush

Amorpha nitens

Smooth False Indigo

Andromeda glaucophylla

Bog Rosemary

Arctostaphylos uva-ursi

Bearberry

Artemisia dracunculus

Dragon Wormwood

Asclepias lanuginosa

Wooly Milkweed

Asclepias meadii*

Mead's Milkweed

Asclepias ovalifolia

Oval Milkweed

Asclepias stenophylla

Narrow-leaved Green Milkweed

Astragalus crassicarpus var. trichocalyx

Large Ground Plum

Astragalus distortus

Bent Milk Vetch

Astragalus tennesseensis

Tennessee Milk Vetch

Baptisia tinctoria

Yellow Wild Indigo

Bartonia paniculata

Screwstem

Berchemia scandens

Supple Jack

Betula alleghaniensis

Yellow Birch

Bidens beckii

Water Marigold

Capnoides sempervirens

Pink Corydalis

Cardamine pratensis var. palustris

Cuckoo Flower

Carya aquatica

Water Hickory

Carya pallida

Pale Hickory

Castilleja sessiliflora

Downy Yellow Painted Cup

Ceanothus herbaceus

Redroot

Chimaphila maculata

Spotted Wintergreen

Chimaphila umbellata

Pipsissewa

Circaea alpina

Small Enchanter's Nightshade

Cirsium pitcheri*

Pitcher's (Dune) Thistle

Cladrastis kentukea

Yellowwood

Clematis crispa

Blue Jasmine

Clematis viorna

Leatherflower

Collinsia violacea

Violet Collinsia

Comptonia peregrina

Sweetfern

Conioselinum chinense

Hemlock Parsley

Cornus canadensis

Bunchberry

Corydalis aurea

Golden Corydalis

Corydalis halei

Hale's Corydalis

Corylus cornuta

Beaked Hazelnut

Cynosciadium digitatum

Cynosciadium

Dalea foliosa**

Leafy Prairie Clover

Delphinium carolinianum

Hill Prairie Larkspur

Draba cuneifolia

Whitlow Grass

Drosera rotundifolia

Round-leaved Sundew

Epilobium strictum

Downy Willow Herb

Eryngium prostratum

Eryngo

Erythranthe geyeri

Yellow Monkey Flower

Eupatorium hyssopifolium var. laciniatum

Hyssop-leaved Thoroughwort

Euphorbia spathulata

Spurge

Galium virgatum

Dwarf Bedstraw

Geranium bicknellii

Northern Cranesbill

Gratiola quartermaniae

Hedge Hyssop

Hackelia deflexa var. americana

Stickseed

Halesia carolina

Silverbell Tree

Helianthus angustifolius

Narrow-leaved Sunflower

Helianthus giganteus

Tall Sunflower

Heliotropium tenellum

Slender Heliotrope

Hudsonia tomentosa

False Heather

Hydrolea uniflora

One-flowered Hydrolea

Hymenopappus scabiosaeus

Old Plainsman

Hypericum adpressum

Shore St. John's Wort

Hypericum kalmianum

Kalm's St. John's Wort

Hypericum swinkianum

Swink's St. John's Wort

Iliamna remota

Kankakee Mallow

Iresine rhizomatosa

Bloodleaf

Juglans cinerea

Butternut

Justicia ovata

Water Willow

Lackeya multiflora

Boykin's Dioclea

Lechea intermedia

Savanna Pinweed

Lespedeza leptostachya*

Prairie Bush Clover

Lonicera dioica var. glaucescens

Red Honeysuckle

Lonicera flava

Yellow Honeysuckle

Ludwigia sphaerocarpa

Round-fruited Loosestrife

Lysimachia radicans

Creeping Loosestrife

Malus angustifolia

Narrow-leaved Crabapple

Malvastrum hispidum

False Mallow

Matelea decipiens

Climbing Milkweed

Melanthera nivea

White Melanthera

Mentzelia oligosperma

Stickleaf

Micranthes virginiensis

Early Saxifrage

Mimosa nuttallii

Cat's Claw

Mirabilis hirsuta

Hairy Umbrella-wort

Nemophila aphylla

Baby Blue-Eyes

Nothocalais cuspidata

Prairie Dandelion

Opuntia fragilis

Fragile Prickly Pear

Orobanche fasciculata

Clustered Broomrape

Penstemon grandiflorus

Large-flowered Beard Tongue

Penstemon tubaeflorus

Tube Beard Tongue

Persicaria careyi

Carey's Heartsease

Phacelia gilioides

Ozark Phacelia

Phemeranthus calycinus

Fameflower

Phlox pilosa subsp. sangamonensis

Sangamon Phlox

Physaria ludoviciana

Silvery Bladderpod

Plantago cordata

Heart-leaved Plantain

Polanisia jamesii

James' Clammyweed

Polygala incarnata

Pink Milkwort

Populus balsamifera

Balsam Poplar

Primula mistassinica

Bird's-eye Primrose

Ptilimnium nuttallii

Mock Bishop's Weed

Quercus texana

Nuttall's Oak

Ranunculus rhomboideus

Prairie Buttercup

Rhamnus alnifolia

Alder Buckthorn

Rhexia mariana

Dull Meadow Beauty

Ribes hirtellum

Northern Gooseberry

Rosa acicularis

Bristly Rose

Sabatia campestris

Prairie Rose Gentian

Salix cordata

Dune Willow

Salix serissima

Autumn Willow

Sambucus racemosa subsp. pubens

Red-berried Elder

Sanguisorba canadensis

American Burnet

Sanicula smallii

Southern Black Snakeroot

Sarracenia purpurea

Pitcher Plant

Shepherdia canadensis

Buffaloberry

Sideroxylon lanuginosum

Wooly Buckthorn

Silene ovata

Ovate Catchfly

Silene regia

Royal Catchfly

Sorbus americana

American Mountain Ash

Stellaria pubera

Great Chickweed

Stylisma pickeringii var. pattersonii

Patterson's Bindweed

Styrax grandifolius

Bigleaf Snowbell Bush

Symphoricarpos albus var. albus

Snowberry

Tetraneuris herbacea*

Lakeside Daisy

Tilia americana var. heterophylla

White Basswood

Tracaulon arifolium

Halberd-leaved Tearthumb

Trientalis borealis

Star-flower

Ulmus thomasii

Rock Elm

Utricularia cornuta

Horned Bladderwort

Utricularia minor

Small Bladderwort

Utricularia subulata

Hair Bladderwort

Vaccinium corymbosum

Highbush Blueberry

Vaccinium macrocarpon

Large Cranberry

Vaccinium oxycoccos

Small Cranberry

Vaccinium stamineum

Deerberry

Valeriana uliginosa

Marsh Valerian

Valerianella umbilicata

Corn Salad

Veronica americana

American Brooklime

Vicia caroliniana

Wood Vetch

Viola blanda

Hairy White Violet

Viola canadensis

Canada Violet

Viola primulifolia

Primrose Violet

Viola rugulosa

Western Tall White Violet

Viola viarum

Limestone Riverbank Violet

 

d)         ANGIOSPERMS – MONOCOTS

 

Avenella flexuosa

Hairgrass

Beckmannia syzigachne

American Slough Grass

Bouteloua gracilis

Blue Grama

Calamagrostis porteri subsp. insperata

Hollow Reed Grass

Calla palustris

Water Arum

Calopogon oklahomensis

Oklahoma Grass Pink Orchid

Calopogon tuberosus

Grass Pink Orchid

Camassia angusta

Wild Hyacinth

Carex alata

Winged Sedge

Carex albicans var. australis

Bellow's Beak Sedge

Carex albolutescens

Greenish-white Oval 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 inops subsp. heliophila

Plains Sedge

Carex limosa

Mud Sedge

Carex nigromarginata

Black-edged Sedge

Carex oligosperma

Few-seeded Sedge

Carex opaca

Opaque Oval Sedge

Carex pallescens

Pale 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

Chamaelirium luteum

Fairy Wand

Corallorhiza maculata

Spotted Coral-root Orchid

Cypripedium acaule

Moccasin Flower

Cypripedium parviflorum var. makasin

Small Yellow Lady's Slipper

Cypripedium reginae

Showy Lady's Slipper

Dichanthelium boreale

Northern Panic Grass

Dichanthelium joorii

Panic Grass

Dichanthelium portoricense

Hemlock Panic Grass

Dichanthelium ravenelii

Ravenel's Panic Grass

Dichanthelium yadkinense

Panic Grass

Echinodorus tenellus

Small Burhead

Eleocharis olivacea

Capitate Spikerush

Eleocharis quinqueflora

Few-flowered Spikerush

Elymus trachycaulus

Bearded Wheat Grass

Eriophorum gracile

Slender Cotton Sedge

Eriophorum virginicum

Rusty Cotton Grass

Fimbristylis vahlii

Vahl's Fimbry

Glyceria arkansana

Arkansas Manna Grass

Heteranthera reniformis

Mud Plantain

Hexalectris spicata

Crested Coralroot Orchid

Isotria medeoloides*

Small Whorled Pogonia

Isotria verticillata

Whorled Pogonia

Juncus vaseyi

Vasey's Rush

Luzula acuminata

Hairy Woodrush

Medeola virginiana

Indian Cucumber Root

Melanthium virginicum

Virginia Bunchflower

Melica mutica

Two-Flowered Melic Grass

Platanthera ciliaris

Orange Fringed Orchid

Platanthera clavellata

Wood Orchid

Platanthera leucophaea*

Eastern Prairie Fringed Orchid

Platanthera psycodes

Purple Fringed Orchid

Poa alsodes

Grove Bluegrass

Poa saltuensis subsp. languida

Weak Bluegrass

Poa wolfii

Wolf's Bluegrass

Pogonia ophioglossoides

Snake-mouth

Polygonatum pubescens

Downy Solomon's Seal

Potamogeton praelongus

White-stemmed Pondweed

Potamogeton pulcher

Spotted Pondweed

Potamogeton robbinsii

Fern Pondweed

Potamogeton strictifolius

Stiff Pondweed

Rhynchospora alba

Beaked Rush

Rhynchospora glomerata

Clustered Beak Rush

Sagittaria australis

Arrowhead

Schizachne purpurascens

False Melic Grass

Schoenoplectiella purshiana

Pursh's Bulrush

Schoenoplectiella smithii

Smith's Bulrush

Scirpus hattorianus

Bulrush

Scirpus microcarpus

Small-fruited Bulrush

Scirpus polyphyllus

Leafy Bulrush

Scleria muhlenbergii

Muhlenberg's Nut Rush

Scleria oligantha

Littlehead Nutrush

Scleria pauciflora

Carolina Whipgrass

Sisyrinchium atlanticum

Eastern Blue-eyed Grass

Sisyrinchium montanum

Mountain Blue-eyed Grass

Sparganium americanum

American Bur-reed

Sparganium emersum

Green-fruited Bur-reed

Spiranthes lucida

Yellow-lipped Ladies' Tresses

Spiranthes vernalis

Spring Ladies' Tresses

Torreyochloa pallida

Pole Manna-Grass

Tradescantia bracteata

Prairie Spiderwort

Trichophorum cespitosum

Tufted Bulrush

Trillium cernuum

Nodding Trillium

Trillium erectum

Ill-scented Trillium

Trillium viride

Green Trillium

Zigadenus elegans

White Camass

 

*          Federally designated threatened species

 

**        Federally designated endangered species

 

(Source:  Amended at 49 Ill. Reg. 14774, effective October 30, 2025)

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 1050.40 THREATENED FLORA OF ILLINOIS

 

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 https://www.fws.gov/program/endangered-species/ for a complete listing of all federally designated endangered and threatened species and subspecies.

 

SCIENTIFIC NAME                         COMMON NAME

 

a)         FERNS AND ALLIES

 

Equisetum pratense

Meadow Horsetail

Huperzia porophila

Cliff Clubmoss

 

b)         ANGIOSPERMS – DICOTS

 

Agalinis skinneriana

Pale False Foxglove

Amelanchier interior

Shadbush

Boltonia decurrens*

Decurrent False Aster

Buchnera americana

Bluehearts

Cakile edentula var. lacustris

Sea Rocket

Chamaedaphne calyculata

Leatherleaf

Dodecatheon frenchii

French's Shootingstar

Drosera intermedia

Narrow-leaved Sundew

Euonymus americanus

American Strawberry Buh

Euphorbia polygonifolia

Seaside Spurge

Eurybia furcate

Forked Aster

Filipendula rubra

Queen-of-the-Prairie

Hylotelephium telephioides

American Orpine

Lathryus ochroleucus

Pale Vetchling

Melothria pendula

Squirting Cucumber

Menyanthes trifoliata

Buckbean

Minuartia patula

Slender Sandwort

Monarda clinopodia

White Bergamot

Orobanche ludoviciana

Broomrape

Oxalis illinoensis

Illinois Wood Sorrel

Phemeranthus parviflorus

Small Flower-of-an-hour

Planera aquatica

Water Elm

Quercus montana

Rock Chestnut Oak

Quercus phellos

Willow Oak

Ranunculus harveyi

Harvey's Buttercup

Rubus pubescens

Dwarf Raspberry

Rubus setosus

Bristly Blackberry

Rudbeckia missouriensis

Missouri Orange Coneflower

Salvia azurea var.grandiflora

Blue Sage

Solidago sciaphila

Cliff Goldenrod

Styrax americanus

Storax

Sullivantia sullivantii

Sullivantia

Synandra hispidula

Hairy Synandra

Synthyris bullii

Kitten Tails

Trifolium reflexum

Buffalo Clover

Urtica chamaedryoides

Nettle

Utricularia intermedia

Flat-leaved Bladderwort

Veronica scutellata

Marsh Speedwell

Viburnum molle

Arrowwood

 

c)         ANGIOSPERMS – MONOCOTS

 

Ammophila breviligulata

Marram Grass

Carex atlantica

Sedge

Carex aurea

Golden Sedge

Carex bromoides

Sedge

Carex cryptolepsis

Yellow Sedge

Carex intumescens

Swollen Sedge

Carex oxylepis var. 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

Festuca paradoxa

Cluster Fescue

Juncus alpinoarticulatus

Richardson's Rush

Platanthera flava var. flava

Tubercled Orchid

Potamogeton gramineus

Grass-leaved Pondweed

Schoenoplectiella hallii

Hall's Bulrush

Stenanthium gramineum

Grass-leaved Lily

Triantha glutinosa

False Asphodel

Triglochin maritima

Common Bog Arrowgrass

Triglochin palustris

Slender Bog Arrowgrass

Uvularia floridana

Florida Bellwort

 

d)         LICHEN

 

Phaeophyscia leana

Lea's Bog Lichen

 

*          Federally designated threatened species

 

**        Federally designated endangered species.

 

(Source:  Amended at 49 Ill. Reg. 14774, effective October 30, 2025)