Endangered Wild Flowers of Illinois

Source: Checklist of Endangered and Threatened Animals and Plants of Illinois
Illinois Endangered Species Protection Board, February 22, 2011

* = Federally Threatened    ** = Federally Endangered

Adoxa moschatellina   Moschatel
Asclepias lanuginosa   Wooly Milkweed
Asclepias meadii*    Mead’s Milkweed
Asclepias ovalifolia      Oval Milkweed
Asclepias stenophylla     Narrow-leaved Green Milkweed
Asplenium bradleyi Bradley’s Spleenwort
Asplenium resiliens Black Spleenwort
Astragalus distortus       Bent Milk Vetch
Astragalus tennesseensis Tennessee Milk Vetch
Baptisia tinctoria  Yellow Wild Indigo
Botrychium campestre      Prairie Moonwort
Botrychium matricariifolium Daisyleaf Grape Fern
Botrychium multifidum   Northern Grape Fern
Botrychium simplex  Dwarf Grape Fern
Calla palustris
Water Arum
Calopogon oklahomensis      Oklahoma Grass Pink Orchid
Calopogon tuberosus      Grass Pink Orchid
Camassia angusta     Wild Hyacinth
Cardamine pratensis var. palustris  Cuckoo Flower
Castilleja sessiliflora      Downy Yellow Painted Cup
Chamaelirium luteum      Fairy Wand
Chimaphila maculata     Spotted Wintergreen
Chimaphila umbellata    Pipsissewa
Cimicifuga americana    American Bugbane
Cimicifuga racemosa      False Bugbane
Circaea alpina   Small Enchanter’s Nightshade
Clematis crispa   Blue Jasmine
Clematis occidentalis      Mountain Clematis
Clematis viorna  Leatherflower
Collinsia violacea    Violet Collinsia
Comptonia peregrina      Sweetfern
Cornus canadensis   Bunchberry
Corydalis aurea Golden Corydalis
Corydalis halei
Hale’s Corydalis
Corydalis sempervirens  Pink Corydalis
Cynosciadium digitatum Cynosciadium
Cypripedium acaule Moccasin Flower
Cypripedium parviflorum var. makasin   Small Yellow Lady’s Slipper
Cypripedium reginae      Showy Lady’s Slipper
Cystopteris laurentiana  Laurentian Fragile Fern
Dalea foliosa**  Leafy Prairie Clover
Dennstaedtia punctilobula   Hay-scented Fern
Drosera rotundifolia Round-leaved Sundew
Dryopteris celsa Log Fern
Echinodorus tenellus      Small Burhead
Eryngium prostratum      Eryngo
Euonymus americanus    American Strawberry Bush
Eupatorium hyssopifolium    Hyssop-leaved Thoroughwort
Euphorbia spathulata     Spurge
Filipendula rubra     Queen-of-the-Prairie
Fimbristylis vahlii     Vahl’s Fimbristylis
Galium lanceolatum Wild Licorice
Geranium bicknellii  Northern Cranesbill
Gratiola quartermaniae Hedge Hyssop
Gymnocarpium dryopteris     Oak Fern
Gymnocarpium robertianum Scented Oak Fern
Helianthus giganteus      Tall Sunflower
Heliotropium tenellum    Slender Heliotrope
Heteranthera reniformis Mud Plantain
Hexalectris spicata   Crested Coralroot Orchid
Hudsonia tomentosa False Heather
Hydrolea uniflora     One-flowered Hydrolea
Hypericum adpressum     Shore St. John’s Wort
Hypericum kalmianum    Kalm’s St. John’s Wort
Iliamna remota   Kankakee Mallow
Iresine rhizomatosa  Bloodleaf
Isoetes butleri     Butler’s Quillwort
Isotria verticillata     Whorled Pogonia
Justicia ovata     Water Willow
Lespedeza leptostachya* Prairie Bush Clover
Lesquerella ludoviciana Silvery Bladderpod
Lonicera dioica var. glaucescens      Red Honeysuckle
Lonicera flava    Yellow Honeysuckle
Luzula acuminata     Hairy Woodrush
Lysimachia radicans Creeping Loosestrife
Malvastrum hispidum      False Mallow
Matelea decipiens     Climbing Milkweed
Medeola virginiana  Indian Cucumber Root
Megalodonta beckii Water Marigold
Melanthera nivea      White Melanthera
Melica mutica     Two-Flowered Melic Grass
Mimulus glabratus    Yellow Monkey Flower
Mirabilis hirsute Hairy Umbrella-wort
Nemophila triloba    Baby Blue-eyes
Nothocalais cuspidata    Prairie Dandelion
Opuntia fragilis  Fragile Prickly Pear
Orobanche fasciculata   Clustered Broomrape
Oxalis illinoensis      Illinois Wood Sorrel
Penstemon brevisepalus Short-sepaled Beard Tongue
Penstemon grandiflorus Large-flowered Beard Tongue
Penstemon tubaeflorus   Tube Beard Tongue
Phacelia gilioides     Ozark Phacelia
Phegopteris connectilis  Long Beech Fern
Phlox pilosa subsp. sangamonensis  Sangamon Phlox
Platanthera ciliaris  Orange Fringed Orchid
Platanthera clavellata    Wood Orchid
Platanthera flava var. flava Tubercled Orchid
Platanthera leucophaea* Eastern Prairie Fringed Orchid
Platanthera psycodes      Purple Fringed Orchid
Pogonia ophioglossoides      Snake-mouth
Polanisia jamesii      James’ Clammyweed
Polygala incarnata  Pink Milkwort
Polygonatum pubescens Downy Solomon’s Seal
Polygonum arifolium      Halberd-leaved Tearthumb
Polygonum careyi     Carey’s Heartsease
Primula mistassinica Bird’s-eye Primrose
Ptilimnium nuttallii  Mock Bishop’s Weed
Rhexia mariana  Dull Meadow Beauty
Rosa acicularis   Bristly Rose
Sabatia campestris   Prairie Rose Gentian
Sagittaria australis  Arrowhead
Sanguisorba canadensis American Burnet
Sanicula smallii Southern Sanicula
Sarracenia purpurea Pitcher Plant
Saxifraga virginiensis     Early Saxifrage
Silene ovata Ovate Catchfly
Silene regia  Royal Catchfly
Sisyrinchium montanum Mountain Blue-eyed Grass
Spiranthes lucida      Yellow-lipped Ladies’ Tresses
Spiranthes vernalis   Spring Ladies’ Tresses
Stellaria pubera Great Chickweed
Stenanthium gramineum Grass-leaved Lily
Stylisma pickeringii  Patterson’s Bindweed
Synandra hispidula  Hairy Synandra
Talinum calycinum   Fameflower
Tetraneuris herbacea*    Lakeside Daisy
Thelypteris noveboracensis  New York Fern
Trichomanes boschianum      Filmy fern
Trientalis borealis    Star-flower
Trillium cernuum Nodding Trillium
Trillium erectum Ill-scented Trillium
Trillium viride     Green Trillium
Utricularia cornuta  Horned Bladderwort
Utricularia minor      Small Bladderwort
Valeriana uliginosa Marsh Valerian
Valerianella chenopodifolia Corn Salad
Valerianella umbilicata Corn Salad
Veronica americana American Brooklime
Viola blanda Hairy White Violet
Viola canadensis  Canada Violet
Viola primulifolia     Primrose Violet
Woodsia ilvensis  Rusty Woodsia
Zigadenus elegans     White Camass