Index / States / Illinois / Cook
§1County listing — Illinois
Cook County
Illinois
- FIPS
- 17031
- Taxa recorded
- 2,148
- State
- Illinois
Filter
Showing 1,351–1,400 of 2,148.
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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 -
Ornithogalum umbellatum L. Introduced ORUMstar of Bethlehem · Liliaceae -
Orobanche fasciculata Nutt. Native ORFAclustered broomrape · Orobanchaceae -
Orobanche uniflora L. Native ORUNoneflowered broomrape · Orobanchaceae -
Orthilia secunda (L.) House Native ORSEsidebells wintergreen · Pyrolaceae -
Oryzopsis asperifolia Michx. Native ORASroughleaf ricegrass · Poaceae -
Osmorhiza claytonii (Michx.) C.B. Clarke Native OSCLClayton's sweetroot · Apiaceae -
Osmorhiza longistylis (Torr.) DC. Native OSLOlongstyle sweetroot · Apiaceae -
Osmunda cinnamomea L. Native OSCIcinnamon fern · Osmundaceae - Osmunda cinnamomea L. var. cinnamomea Native OSCICcinnamon fern · Osmundaceae
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Osmunda claytoniana L. Native OSCL2interrupted fern · Osmundaceae -
Osmunda regalis L. Native OSREroyal fern · Osmundaceae - Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRESroyal fern · Osmundaceae
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Ostrya virginiana (Mill.) K. Koch Native OSVIhophornbeam · Betulaceae -
Oxalis corniculata L. Native OXCOcreeping woodsorrel · Oxalidaceae -
Oxalis dillenii Jacq. Native OXDI2slender yellow woodsorrel · Oxalidaceae -
Oxalis stricta L. Native OXSTcommon yellow oxalis · Oxalidaceae -
Oxalis violacea L. Native OXVIviolet woodsorrel · Oxalidaceae -
Oxydendrum arboreum (L.) DC. Native OXARsourwood · Ericaceae -
Oxypolis rigidior (L.) Raf. Native OXRIstiff cowbane · Apiaceae -
Packera aurea (L.) Á. Löve & D. Löve Native PAAU3golden ragwort · Asteraceae -
Packera paupercula (Michx.) Á. Löve & D. Löve Native PAPA20balsam groundsel · 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
- Panicum dichotomiflorum Michx. var. puritanorum Svens. Native PADIPfall panicgrass · Poaceae
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Panicum flexile (Gattinger) Scribn. Native PAFL2wiry panicgrass · Poaceae -
Panicum miliaceum L. Introduced PAMI2proso millet · Poaceae - Panicum miliaceum L. ssp. miliaceum Introduced PAMIMbroomcorn millet · Poaceae
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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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Papaver rhoeas L. Introduced PARH2corn poppy · Papaveraceae -
Parietaria pensylvanica Muhl. ex Willd. Native PAPE5Pennsylvania pellitory · Urticaceae -
Parnassia glauca Raf. Native PAGL3fen grass of Parnassus · Saxifragaceae -
Paronychia canadensis (L.) Alph. Wood Native PACA11smooth forked nailwort · Caryophyllaceae -
Paronychia fastigiata (Raf.) Fernald Native PAFA3hairy forked nailwort · Caryophyllaceae -
Parthenium hysterophorus L. Introduced PAHYSanta Maria feverfew · Asteraceae -
Parthenium integrifolium L. Native PAIN3wild quinine · Asteraceae - Parthenium integrifolium L. var. integrifolium Native PAINIwild quinine · Asteraceae
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Parthenocissus quinquefolia (L.) Planch. Native PAQU2Virginia creeper · Vitaceae -
Parthenocissus vitacea (Knerr) Hitchc. Native PAVI5woodbine · Vitaceae -
Pascopyrum smithii (Rydb.) Á. Löve Native PASMwestern wheatgrass · Poaceae -
Pastinaca sativa L. Introduced PASA2wild parsnip · Apiaceae