Index / States / Arkansas / Washington
§1County listing — Arkansas
Washington County
Arkansas
- FIPS
- 05143
- Taxa recorded
- 1,975
- State
- Arkansas
Filter
Showing 1,201–1,250 of 1,975.
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Oenothera villosa Thunb. ssp. villosa Native OEVIVhairy evening primrose · Onagraceae -
Oligoneuron album (Nutt.) G.L. Nesom Native OLAL2prairie 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
- Onosmodium bejariense DC. ex A. DC. var. subsetosum (Mack. & Bush) B.L. Turner Native ONBESsofthair marbleseed · Boraginaceae
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Ophioglossum engelmannii Prantl Native OPENlimestone adderstongue · Ophioglossaceae -
Ophioglossum vulgatum L. Native OPVUsouthern adderstongue · Ophioglossaceae -
Oplismenus hirtellus (L.) P. Beauv. Both OPHIbasketgrass · Poaceae - Oplismenus hirtellus (L.) P. Beauv. ssp. setarius (Lam.) Mez ex Ekman Native OPHISbasketgrass · Poaceae
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Opuntia humifusa (Raf.) Raf. Native OPHUdevil's-tongue · Cactaceae -
Opuntia macrorhiza Engelm. Native OPMA2twistspine pricklypear · Cactaceae - Opuntia macrorhiza Engelm. var. macrorhiza Native OPMAM3twistspine pricklypear · Cactaceae
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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 -
Oryza sativa L. Introduced ORSArice · Poaceae -
Osmorhiza longistylis (Torr.) DC. Native OSLOlongstyle sweetroot · Apiaceae -
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 rubra A. St.-Hil. Introduced OXRUwindowbox woodsorrel · Oxalidaceae
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Oxalis stricta L. Native OXSTcommon yellow oxalis · Oxalidaceae -
Oxalis violacea L. Native OXVIviolet woodsorrel · Oxalidaceae -
Oxypolis rigidior (L.) Raf. Native OXRIstiff cowbane · Apiaceae -
Packera aurea (L.) Á. Löve & D. Löve Native PAAU3golden ragwort · Asteraceae -
Packera glabella (Poir.) C. Jeffrey Native PAGL17butterweed · Asteraceae -
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 obtusum Kunth Native PAOBvine mesquite · 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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Papaver rhoeas L. Introduced PARH2corn poppy · Papaveraceae -
Parietaria pensylvanica Muhl. ex Willd. Native PAPE5Pennsylvania pellitory · Urticaceae -
Paronychia fastigiata (Raf.) Fernald Native PAFA3hairy forked nailwort · Caryophyllaceae - Paronychia fastigiata (Raf.) Fernald var. fastigiata Native PAFAFhairy forked nailwort · Caryophyllaceae
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Parthenium hysterophorus L. Introduced PAHYSanta Maria feverfew · Asteraceae