Index / States / Pennsylvania / Allegheny
§1County listing — Pennsylvania
Allegheny County
Pennsylvania
- FIPS
- 42003
- Taxa recorded
- 1,943
- State
- Pennsylvania
Filter
Showing 1,151–1,200 of 1,943.
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Ocimum basilicum L. Introduced OCBAsweet basil · Lamiaceae -
Oenothera biennis L. Native OEBIcommon evening primrose · Onagraceae -
Oenothera fruticosa L. Native OEFRnarrowleaf evening primrose · Onagraceae - Oenothera fruticosa L. ssp. fruticosa Native OEFRFnarrowleaf evening primrose · Onagraceae
- Oenothera fruticosa L. ssp. tetragona (Roth) W.L. Wagner Native OEFRTnarrowleaf evening primrose · Onagraceae
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Oenothera gaura W.L. Wagner & Hoch Native OEGAbiennial beeblossom · Onagraceae -
Oenothera laciniata Hill Native OELAcutleaf evening primrose · Onagraceae -
Oenothera nutans Atk. & Bartlett Native OENU2nodding evening primrose · Onagraceae -
Oenothera parviflora L. Native OEPA5northern evening primrose · Onagraceae -
Oenothera perennis L. Native OEPElittle evening primrose · Onagraceae -
Oenothera pilosella Raf. Native OEPI2meadow evening primrose · Onagraceae - Oenothera pilosella Raf. ssp. pilosella Native OEPIPmeadow evening primrose · Onagraceae
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Oenothera speciosa Nutt. Native OESP2pinkladies · Onagraceae -
Onoclea sensibilis L. Native ONSEsensitive fern · Dryopteridaceae -
Onopordum acanthium L. Introduced ONACScotch cottonthistle · Asteraceae -
Opuntia humifusa (Raf.) Raf. Native OPHUdevil's-tongue · Cactaceae -
Origanum majorana L. Introduced ORMAsweet marjoram · Lamiaceae -
Origanum vulgare L. Introduced ORVUoregano · Lamiaceae -
Ornithogalum nutans L. Introduced ORNUdrooping star of Bethlehem · Liliaceae -
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 -
Osmunda cinnamomea L. Native OSCIcinnamon fern · Osmundaceae -
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 grandis Small Native OXGRgreat 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 obovata (Muhl. ex Willd.) W.A. Weber & Á. Löve Native PAOB6roundleaf ragwort · Asteraceae -
Panax quinquefolius L. Native PAQUAmerican ginseng · Araliaceae -
Panax trifolius L. Native PATR2dwarf ginseng · Araliaceae -
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 gattingeri Nash Native PAGAGattinger's panicgrass · Poaceae -
Panicum miliaceum L. Introduced PAMI2proso millet · Poaceae - Panicum miliaceum L. ssp. miliaceum Introduced PAMIMbroomcorn millet · Poaceae
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Panicum philadelphicum Bernh. ex Trin. Native PAPHPhiladelphia panicgrass · Poaceae -
Panicum virgatum L. Native PAVI2switchgrass · Poaceae -
Papaver orientale L. Introduced PAOR5Oriental poppy · Papaveraceae -
Papaver somniferum L. Introduced PASO2opium poppy · Papaveraceae -
Parietaria pensylvanica Muhl. ex Willd. Native PAPE5Pennsylvania pellitory · Urticaceae