Index / States / Illinois / St. Clair
§1County listing — Illinois
St. Clair County
Illinois
- FIPS
- 17163
- Taxa recorded
- 1,648
- State
- Illinois
Filter
Showing 401–450 of 1,648.
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Comandra umbellata (L.) Nutt. ssp. umbellata Native COUMUbastard toadflax · Santalaceae -
Commelina communis L. Introduced COCO3Asiatic dayflower · Commelinaceae -
Commelina diffusa Burm. f. Native CODI5climbing dayflower · Commelinaceae - Commelina diffusa Burm. f. var. diffusa Native CODID3climbing dayflower · Commelinaceae
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Commelina erecta L. Native COERwhitemouth dayflower · Commelinaceae -
Conium maculatum L. Introduced COMA2poison hemlock · Apiaceae -
Conoclinium coelestinum (L.) DC. Native COCO13blue mistflower · Asteraceae -
Conringia orientalis (L.) Dumort. Introduced COORhare's ear mustard · Brassicaceae -
Consolida ajacis (L.) Schur Introduced COAJdoubtful knight's-spur · Ranunculaceae -
Convolvulus arvensis L. Introduced COAR4field bindweed · Convolvulaceae -
Conyza canadensis (L.) Cronquist Native COCA5Canadian horseweed · Asteraceae - Conyza canadensis (L.) Cronquist var. canadensis Native COCAC3Canadian horseweed · Asteraceae
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Conyza ramosissima Cronquist Native CORA4dwarf horseweed · Asteraceae -
Corallorhiza odontorhiza (Willd.) Poir. Native COOD7autumn coralroot · Orchidaceae - Corallorhiza odontorhiza (Willd.) Poir. var. odontorhiza Native COODO2autumn coralroot · Orchidaceae
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Corallorhiza wisteriana Conrad Native COWI5spring coralroot · Orchidaceae -
Coreopsis grandiflora Hogg ex Sweet Native COGR5largeflower tickseed · Asteraceae -
Coreopsis lanceolata L. Native COLA5lanceleaf tickseed · Asteraceae -
Coreopsis palmata Nutt. Native COPA10stiff tickseed · Asteraceae -
Coreopsis pubescens Elliott Native COPU2star tickseed · Asteraceae - Coreopsis pubescens Elliott var. pubescens Native COPUPstar tickseed · Asteraceae
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Coreopsis tripteris L. Native COTR4tall tickseed · Asteraceae -
Cornus amomum Mill. Native COAM2silky dogwood · Cornaceae -
Cornus drummondii C.A. Mey. Native CODRroughleaf dogwood · Cornaceae -
Cornus florida L. Native COFL2flowering dogwood · Cornaceae -
Cornus obliqua Raf. Native COOB9silky dogwood · Cornaceae -
Cornus racemosa Lam. Native CORA6gray dogwood · Cornaceae -
Cornus sericea L. Native COSE16redosier dogwood · Cornaceae - Cornus sericea L. ssp. sericea Native COSESredosier dogwood · Cornaceae
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Corydalis flavula (Raf.) DC. Native COFL3yellow fumewort · Fumariaceae -
Corydalis micrantha (Engelm. ex A. Gray) A. Gray Native COMI2smallflower fumewort · Fumariaceae -
Corylus americana Walter Native COAM3American hazelnut · Betulaceae -
Crataegus chrysocarpa Ashe Native CRCHfireberry hawthorn · Rosaceae - Crataegus chrysocarpa Ashe var. chrysocarpa Native CRCHC2red haw · Rosaceae
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Crataegus crus-galli L. Native CRCR2cockspur hawthorn · Rosaceae -
Crataegus mollis Scheele Native CRMO2downy hawthorn · Rosaceae - Crataegus nitida (Engelm.) Sarg. Native CRNIglossy hawthorn · Rosaceae
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Crataegus phaenopyrum (L. f.) Medik. Native CRPHWashington hawthorn · Rosaceae -
Crataegus punctata Jacq. Native CRPUdotted hawthorn · Rosaceae -
Crataegus viridis L. Native CRVI2green hawthorn · Rosaceae - Crataegus viridis L. var. viridis Native CRVIV2green hawthorn · Rosaceae
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Crotalaria sagittalis L. Native CRSA4arrowhead rattlebox · Fabaceae -
Croton capitatus Michx. Native CRCA6hogwort · Euphorbiaceae - Croton capitatus Michx. var. capitatus Native CRCAC2hogwort · Euphorbiaceae
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Croton glandulosus L. Both CRGL2vente conmigo · Euphorbiaceae - Croton glandulosus L. var. septentrionalis Müll. Arg. Native CRGLSvente conmigo · Euphorbiaceae
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Croton michauxii G.L. Webster Native CRMI8Michaux's croton · Euphorbiaceae - Croton michauxii G.L. Webster var. ellipticus (Willd.) B.W. van Ee & P.E. Berry Native CRMIEMichaux's croton · Euphorbiaceae
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Croton monanthogynus Michx. Native CRMO6prairie tea · Euphorbiaceae -
Crypsis schoenoides (L.) Lam. Introduced CRSCswamp pricklegrass · Poaceae