Index / States / Illinois / St. Clair
§1County listing — Illinois
St. Clair County
Illinois
- FIPS
- 17163
- Taxa recorded
- 1,648
- State
- Illinois
Filter
Showing 1,001–1,050 of 1,648.
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Nuphar lutea (L.) Sm. Native NULUyellow pond-lily · Nymphaeaceae - Nuphar lutea (L.) Sm. ssp. advena (Aiton) Kartesz & Gandhi Native NULUAyellow pond-lily · Nymphaeaceae
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Nyssa sylvatica Marshall Native NYSYblackgum · Cornaceae -
Oenothera biennis L. Native OEBIcommon evening primrose · Onagraceae -
Oenothera curtiflora W.L. Wagner & Hoch Native OECU2velvetweed · Onagraceae -
Oenothera filiformis (Small) W.L. Wagner & Hoch Native OEFI2longflower beeblossom · Onagraceae -
Oenothera gaura W.L. Wagner & Hoch Native OEGAbiennial beeblossom · Onagraceae -
Oenothera laciniata Hill Native OELAcutleaf evening primrose · Onagraceae -
Oenothera macrocarpa Nutt. Native OEMAbigfruit evening primrose · Onagraceae - Oenothera macrocarpa Nutt. ssp. macrocarpa Native OEMAMbigfruit evening primrose · Onagraceae
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Oenothera pilosella Raf. Native OEPI2meadow evening primrose · Onagraceae - Oenothera pilosella Raf. ssp. pilosella Native OEPIPmeadow evening primrose · Onagraceae
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Oenothera rhombipetala Nutt. ex Torr. & A. Gray Native OERHfourpoint evening primrose · Onagraceae -
Oenothera speciosa Nutt. Native OESP2pinkladies · Onagraceae -
Oligoneuron riddellii (Frank ex Riddell) Rydb. Native OLRI2Riddell's goldenrod · Asteraceae -
Oligoneuron rigidum (L.) Small Native OLRIstiff goldenrod · Asteraceae - Oligoneuron rigidum (L.) Small var. rigidum Native OLRIRstiff goldenrod · Asteraceae
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Onoclea sensibilis L. Native ONSEsensitive fern · Dryopteridaceae -
Onosmodium bejariense DC. ex A. DC. Native ONBEsoft-hair marbleseed · Boraginaceae - Onosmodium bejariense DC. ex A. DC. var. bejariense Native ONBEBsoft-hair marbleseed · Boraginaceae
- Onosmodium bejariense DC. ex A. DC. var. occidentale (Mack.) B.L. Turner Native ONBEOwestern marbleseed · Boraginaceae
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Ophioglossum pusillum Raf. Native OPPU3northern adderstongue · Ophioglossaceae -
Opuntia humifusa (Raf.) Raf. Native OPHUdevil's-tongue · Cactaceae -
Orbexilum onobrychis (Nutt.) Rydb. Native ORONFrench-grass · Fabaceae -
Orbexilum pedunculatum (Mill.) Rydb. Native ORPESampson's snakeroot · Fabaceae - Orbexilum pedunculatum (Mill.) Rydb. var. pedunculatum Native ORPEP2Sampson's snakeroot · Fabaceae
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Ornithogalum umbellatum L. Introduced ORUMstar of Bethlehem · Liliaceae -
Orobanche uniflora L. Native ORUNoneflowered broomrape · Orobanchaceae -
Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCLClayton's sweetroot · Apiaceae -
Osmorhiza longistylis (Torr.) DC. Native OSLOlongstyle sweetroot · Apiaceae -
Ostrya virginiana (Mill.) K. Koch Native OSVIhophornbeam · Betulaceae -
Oxalis dillenii Jacq. Native OXDI2slender yellow woodsorrel · Oxalidaceae -
Oxalis stricta L. Native OXSTcommon yellow oxalis · Oxalidaceae -
Oxalis violacea L. Native OXVIviolet woodsorrel · Oxalidaceae -
Packera obovata (Muhl. ex Willd.) W.A. Weber & Á. Löve Native PAOB6roundleaf ragwort · Asteraceae -
Packera plattensis (Nutt.) W.A. Weber & Á. Löve Native PAPL12prairie groundsel · Asteraceae -
Panax quinquefolius L. Native PAQUAmerican ginseng · Araliaceae -
Panicum anceps Michx. Native PAANbeaked panicgrass · Poaceae -
Panicum capillare L. Native PACA6witchgrass · Poaceae -
Panicum dichotomiflorum Michx. Native PADIfall panicgrass · Poaceae - Panicum dichotomiflorum Michx. var. dichotomiflorum Native PADIDfall panicgrass · Poaceae
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Panicum flexile (Gattinger) Scribn. Native PAFL2wiry panicgrass · Poaceae -
Panicum gattingeri Nash Native PAGAGattinger's panicgrass · Poaceae -
Panicum philadelphicum Bernh. ex Trin. Native PAPHPhiladelphia panicgrass · Poaceae -
Panicum rigidulum Bosc ex Nees Native PARI4redtop panicgrass · Poaceae - Panicum rigidulum Bosc ex Nees var. rigidulum Native PARIRredtop panicgrass · Poaceae
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Panicum virgatum L. Native PAVI2switchgrass · Poaceae - Panicum virgatum L. var. virgatum Native PAVIVswitchgrass · Poaceae
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Parietaria pensylvanica Muhl. ex Willd. Native PAPE5Pennsylvania pellitory · Urticaceae -
Paronychia canadensis (L.) Alph. Wood Native PACA11smooth forked nailwort · Caryophyllaceae