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2403 Plants Found

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Scientific Name	Common Name	†	Map‡
Lithospermum canescens (Michx.) Lehm.	hoary puccoon
Scutellaria incana Biehler	Hoary Skullcap
Desmodium canescens (L.) DC.	hoary ticktrefoil
Verbena stricta Vent.	Hoary Vervain
Prunus umbellata Elliott	hog plum
Croton capitatus Michx.	Hogwort
Triodanis holzingeri McVaugh	Holzinger's Venus' looking-glass
Cryptotaenia canadensis (L.) DC.	Honewort	✓
Prosopis glandulosa Torr.	Honey Mesquite
Gleditsia triacanthos L.	Honeylocust
Cynanchum laeve (Michx.) Pers.	Honeyvine
Sagittaria calycina Engelm.	hooded arrowhead
Eryngium hookeri Walp.	Hooker's eryngo
Oenothera elata Kunth	Hooker's evening primrose
Croptilon hookerianum (Torr. & A. Gray) House	Hooker's scratchdaisy
Carex lupulina Muhl. ex Willd.	hop sedge
Zannichellia palustris L.	Horned Pondweed
Podostemum ceratophyllum Michx.	Hornleaf Riverweed
Paspalum repens P.J.Bergius	Horsetail Paspalum
Conyza canadensis (L.) Cronquist	Horseweed	✓
Prunus hortulana L.H. Bailey	Hortulan Plum
Cynoglossum officinale L.	Houndstongue
Amsonia hubrichtii Woodson	Hubricht's Bluestar
Utricularia gibba L.	Humped Bladderwort
Physalis pubescens L.	Husk Tomato
Gleditsia ×texana Sarg.	Hybrid Honeylocust
Quercus ×filialis Little	Hybrid Oak
Eupatorium hyssopifolium L.	Hyssopleaf Thoroughwort
Desmanthus illinoensis (Michx.) MacMill. ex B.L. Rob. & Fernald	Illinois Bundleflower
Eleusine indica (L.) Gaertn.	Indian goosegrass
Heliotropium indicum L.	Indian Heliotrope
Aeschynomene indica L.	Indian jointvetch
Lobelia inflata L.	Indian Tobacco
Rotala indica (Willd.) Koehne	Indian toothcup
Carex grisea Wahlenb.	inflated narrow-leaf sedge
Muhlenbergia glabrifloris Scribn.	Inland Muhly
Ceanothus herbaceus Raf.	Inland New Jersey Tea
Juncus interior Wiegand	inland rush
Carex interior L.H. Bailey	inland sedge
Apocynum ×floribundum	Intermediate Dogbane
Arum italicum Mill.	Italian lords and ladies
Physalis hederifolia A. Gray	ivyleaf groundcherry
Ipomoea hederacea Jacq.	Ivyleaf Morning-Glory
Veronica hederifolia L.	ivyleaf speedwell
Arisaema triphyllum (L.) Schott	Jack in the Pulpit
Polemonium reptans L.	Jacob's Ladder
Holosteum umbellatum L.	Jagged Chickweed
Pomaria jamesii (Torr. & A. Gray) Walp.	James' holdback
Carex jamesii Schwein.	James' sedge
Berberis thunbergii DC.	Japanese barberry
Lygodium japonicum (Thunb.) Sw.	Japanese climbing fern
Kummerowia striata (Thunb.) Schindl.	Japanese Clover
Lonicera japonica Thunb.	Japanese Honeysuckle	✓
Acer palmatum Thunb.	Japanese Maple
Mazus pumilus (Burm. f.) Steenis	Japanese mazus
Cyrtomium falcatum (L. f.) C. Presl	Japanese netvein hollyfern
Ligustrum japonicum Thunb.	Japanese Privet
Microstegium vimineum (Trin.) A. Camus	Japanese Stiltgrass
Wisteria floribunda (Willd.) DC.	Japanese wisteria
Senna obtusifolia (L.) Irwin & Barneby	Java-Bean
Helianthus tuberosus L.	Jerusalem Artichoke
Impatiens capensis Meerb.	Jewelweed
Datura stramonium L.	Jimsonweed
Viola tricolor L.	johnny jumpup
Sorghum halepense (L.) Pers.	Johnsongrass
Eleocharis equisetoides (Elliott) Torr.	jointed spikesedge
Narcissus jonquilla L.	Jonquil
Iresine rhizomatosa Standl.	Juda's bush
Persicaria virginiana L.	Jumpseed
Echinochloa colona (L.) Link	Jungle Rice
Polypremum procumbens L.	juniper leaf
Sagittaria ambigua J.G. Sm.	Kansas Arrowhead
Crataegus coccinioides Ashe	Kansas Hawthorn
Salvinia molesta Mitchell	kariba-weed
Isolepis carinata Hook. & Arn. ex Torr.	keeled bulrush
Gymnocladus dioicus (L.) K. Koch	Kentucky Coffeetree
Cypripedium kentuckiense C.F. Reed	Kentucky Lady's Slipper
Cladrastis kentukea (Dum. Cours.) Rudd	Kentucky Yellowwood
Parnassia asarifolia Vent.	Kidneyleaf Grass-of-Parnassus
Heteranthera reniformis Ruiz & Pav.	kidneyleaf mudplantain
Carex reniformis (L.H. Bailey) Small	kidneyshape sedge
Portulaca pilosa L.	kiss me quick
Oenothera suffulta (Engelm. ex A. Gray) W.L. Wagner & Hoch	kisses
Actinidia chinensis Planch.	Kiwi
Paspalum distichum L.	knotgrass
Trifolium striatum L.	knotted clover
Torilis nodosa (L.) Gaertn.	knotted hedgeparsley
Juncus nodosus L.	knotted rush
Kummerowia stipulacea (Maxim.) Makino	Korean Clover
Zoysia japonica Steud.	Korean lawngrass
Polystichum luctuosum (Kunze) T.Moore	Korean Rockfern
Selaginella kraussiana (Kunze) A. Braun	Krauss' spikemoss
Pueraria montana (Lour.) Merr.	Kudzu
Echinocereus reichenbachii (Terscheck ex Walp.) hort ex Haage	lace hedgehog cactus
Eragrostis capillaris (L.) Nees	Lace Lovegrass
Ptilimnium nuttallii (DC.) Britton	laceflower
Zeltnera texensis (Griseb.) G.Mans. ex J.S.Pringle	Lady Bird's Centaury
Rorippa aquatica (Eaton) E.J.Palmer & Steyerm.	Lakecress
Galium divaricatum Pourr. ex Lam.	Lamarck's bedstraw
Gaillardia aestivalis (Walter) H. Rock	lanceleaf blanketflower
Rhamnus lanceolata Pursh	lanceleaf buckthorn
Phyla lanceolata (Michx.) Greene	Lanceleaf Fogfruit
Smilax smallii Morong	lanceleaf greenbrier
Lysimachia lanceolata Walter	Lanceleaf Loosestrife
Ambrosia bidentata Michx.	Lanceleaf Ragweed
Salvia reflexa Hornem.	Lanceleaf Sage
Eupatorium lancifolium (Torr. & A. Gray) Small	lanceleaf thoroughwort
Coreopsis lanceolata L.	Lanceleaf Tickseed
Polanisia erosa (Nutt.) Iltis	large clammyweed
Isotria verticillata Raf.	large whorled pogonia
Vicia grandiflora Scop.	Large Yellow Vetch
Ludwigia grandiflora (Michx.) Greuter & Burdet	large-flower primrose-willow
Desmodium cuspidatum (Muhl. ex Willd.) DC. ex D. Don	Largebract Ticktrefoil
Plantago aristata Michx.	Largebracted Plantain
Nemophila phacelioides Nutt.	largeflower baby blue eyes
Uvularia grandiflora Sm.	largeflower bellwort
Phemeranthus calycinus (Engelm.) Kiger	Largeflower Fameflower
Coreopsis grandiflora Hogg ex Sweet	Largeflower Tickseed
Aureolaria grandiflora (Benth.) Pennell	largeflower yellow false foxglove
Parnassia grandifolia DC.	Largeleaf Grass of Parnassus
Hydrocotyle bonariensis Comm. ex Lam.	largeleaf pennywort
Potamogeton amplifolius Tuck.	largeleaf pondweed
Myosotis macrosperma Engelm.	largeseed forget-me-not
Eupatorium serotinum Michx.	Late Boneset	✓
Symphyotrichum patens (Aiton) G.L. Nesom	Late Purple Aster
Smilax laurifolia L.	laurel greenbrier
Quercus laurifolia Michx.	Laurel Oak
Hydrocotyle sibthorpioides Lam.	lawn marshpennywort
Mitreola petiolata (J.F. Gmel.) Torr. & A. Gray	lax hornpod
Xyris laxifolia Mart.	laxleaf yelloweyed grass
Amorpha canescens Pursh	Lead Plant
Scirpus polyphyllus Vahl	Leafy Bulrush
Potamogeton foliosus Raf.	Leafy Pondweed
Juncus capitatus Weigel	leafybract dwarf rush
Ophioglossum nudicaule L. f.	least adderstongue
Lemna minuta Kunth	Least Duckweed
Juncus coriaceus Mack.	leathery rush
Eryngium leavenworthii Torr. & A. Gray	Leavenworth's eryngo
Carex leavenworthii Dewey	Leavenworth's sedge
Melissa officinalis L.	Lemon Balm
Monarda citriodora Cerv. ex Lag.	Lemon Beebalm
Heterotheca camporum (Greene) Shinners	Lemonyellow False Goldenaster
Vicia tetrasperma (L.) Schreb.	lentil vetch
Lespedeza ×acuticarpa Mack. & Bush	Lespedeza
Cardiospermum halicacabum L.	Lesser Balloon Vine
Arctium minus Bernh.	Lesser Burdock
Juncus repens Michx.	lesser creeping rush
Lemna aequinoctialis Welw.	lesser duckweed
Cypripedium parviflorum Salisb.	Lesser Yellow Lady's Slipper
Linum lewisii Pursh	Lewis flax
Valerianella locusta (L.) Lat.	Lewiston cornsalad
Galium circaezans Michx.	licorice bedstraw
Callirhoe alcaeoides (Michx.) A. Gray	Light Poppymallow
Lonicera dioica L.	Limber Honeysuckle
Ophioglossum engelmannii Prantl	limestone adderstongue
Cardamine douglassii Britton	limestone bittercress
Clinopodium arkansanum (Nutt.) House	limestone calamint
Carex granularis Muhl. ex Willd.	limestone meadow sedge
Isoetes butleri Engelm.	Limestone Quillwort
Eleocharis occulta S.G. Sm.	Limestone Spike-Rush
Ruellia strepens L.	limestone wild petunia
Carex striatula Michx.	lined sedge
Hordeum pusillum Nutt.	Little Barley
Schizachyrium scoparium (Michx.) Nash	Little Bluestem
Medicago minima (L.) L.	little bur-clover
Lemna obscura (Austin) Daubs	little duckweed
Utricularia radiata Small	little floating bladderwort
Spiranthes tuberosa Raf.	little lady's tresses
Eragrostis minor Host	little lovegrass
Briza minor L.	little quakinggrass
Heuchera parviflora Bartlett	Littleflower Alumroot
Scleria oligantha Michx.	littlehead nutrush
Crataegus spathulata Michx.	littlehip hawthorn
Carex microdonta Torr. & Hook.	littletooth sedge
Quercus virginiana Mill.	Live Oak
Saururus cernuus L.	Lizard's Tail
Asplenium pinnatifidum Nutt.	Lobed Spleenwort
Pinus taeda L.	Loblolly Pine	✓
Dryopteris celsa "(Wm. Palmer) Knowlt.	log fern
Carex longii Mack.	Long's sedge
Rhynchospora scirpoides (Torr.) A. Gray	longbeak beaksedge
Ranunculus longirostris Godr.	Longbeak Buttercup
Tradescantia bracteata Small	longbract spiderwort
Helenium quadridentatum Labill.	Longdisk Sneezeweed
Oenothera filiformis (Small) W.L. Wagner & Hoch	Longflower Beeblossom
Carex comosa Boott	longhair sedge
Eriogonum longifolium Nutt.	longleaf buckwheat
Cologania angustifolia Kunth	longleaf cologania
Physalis longifolia Nutt.	Longleaf Groundcherry
Asclepias longifolia Michx.	longleaf milkweed
Potamogeton nodosus Poir.	longleaf pondweed
Houstonia longifolia Gaertn.	longleaf summer bluet
Sphenopholis filiformis (Chapm.) Scribn.	longleaf wedgescale
Chasmanthium sessiliflorum (Poir.) Yates	longleaf woodoats
Tridens strictus (Nutt.) Nash	Longspike Tridens
Ophioglossum petiolatum Hook.	longstem adderstongue
Osmorhiza longistylis (Torr.) DC.	longstyle sweetroot
Valeriana matheziana Christenh. & Byng	Longtube Cornsalad
Justicia lanceolata (Chapm.) Small	looseflower water-willow
Juncus secundus P. Beauv. ex Poir.	lopsided rush
Astragalus lotiflorus Hook.	lotus milkvetch
Glinus lotoides L.	lotus sweetjuice
Carex louisianica L.H. Bailey	Louisiana sedge
Vicia ludoviciana Nutt.	Louisiana vetch
Scleria verticillata Muhl. ex Willd.	low nutrush
Argythamnia humilis (Engelm. & A. Gray) Müll. Arg.	low silverbush
Ranunculus pusillus Poir.	low spearwort
Kyllinga pumila Michx.	low spikesedge
Carex socialis Mohlenbr. & Schwegm.	Low Woodland Sedge
Cystopteris protrusa (Weath.) Blasdell	lowland bladderfern
Rotala ramosior (L.) Koehne	lowland rotala
Lysimachia hybrida Michx.	Lowland Yellow Loosestrife
Salvia lyrata L.	lyreleaf sage
Rosa bracteata J.C. Wendl.	Macartney rose
Calystegia macounii (Greene) Brummitt	Macoun's False Bindweed
Asplenium trichomanes L.	maidenhair spleenwort
Diplachne fusca (L.) P.Beauv. ex Roem. & Schult.	Malabar Sprangletop
Lindernia crustacea (L.) F. Muell.	Malaysian false pimpernel
Lyonia ligustrina (L.) DC.	Maleberry
Ipomoea pandurata (L.) G. Mey.	man of the earth
Cyperus lancastriensis Porter ex A. Gray	Manyflower Flatsedge
Hydrocotyle umbellata L.	manyflower marshpennywort
Symphyotrichum anomalum (Engelm.) G.L. Nesom	Manyray Aster
Cyperus polystachyos Rottb.	Manyspike Flatsedge
Chenopodiastrum simplex (Torr.) S.Fuentes, Uotila & Borsch	Mapleleaf Goosefoot
Vitis acerifolia Raf.	Mapleleaf Grape
Quercus acerifolia (Palmer) Stoynoff & Hess	Mapleleaf Oak
Viburnum acerifolium L.	Mapleleaf Viburnum
Dryopteris marginalis (L.) A. Gray	marginal woodfern
Cannabis sativa L.	Marijuana
Setaria parviflora (Poir.) Kerguélen	marsh bristlegrass
Cyperus pseudovegetus Steud.	Marsh Flatsedge
Spiranthes odorata (Nutt.) Lindl.	marsh lady's tresses
Proserpinaca palustris L.	marsh mermaidweed
Cyclospermum leptophyllum (Pers.) Sprague ex Britton & P. Wilson	marsh parsley
Ludwigia palustris (L.) Elliott	marsh seedbox
Mirabilis jalapa L.	marvel of Peru
Rhexia mariana L.	Maryland meadowbeauty
Polygala mariana Mill.	Maryland milkwort
Senna marilandica (L.) Link	Maryland senna
Amaranthus blitoides S. Watson	Mat Amaranth
Cenchrus longispinus (Hack.) Fernald	Mat Sandbur
Lycium barbarum L.	matrimony vine
Callitriche peploides Nutt.	matted water-starwort
Morella cerifera (L.) Small	Max Myrtle
Helianthus maximiliani Schrad.	Maximilian Sunflower
Podophyllum peltatum L.	Mayapple	✓
Carex meadii Dewey	Mead's sedge
Oenothera pilosella Raf.	Meadow Evening Primrose
Schedonorus pratensis (Huds.) P. Beauv.	meadow fescue
Linum pratense (Norton) Small	meadow flax
Allium canadense L.	Meadow Garlic
Thaspium trifoliatum (L.) A. Gray	Meadow Parsnip
Selaginella apoda (L.) Spring	meadow spikemoss
Corydalis crystallina Engelm.	Mealy Fumewort
Salvia farinacea Benth.	mealycup sage
Eragrostis barrelieri Daveau	Mediterranean lovegrass
Azolla microphylla Kaulf.	Mexican Mosquito Fern
Muhlenbergia mexicana (L.) Trin.	Mexican Muhly
Prunus mexicana S. Watson	Mexican plum
Dysphania ambrosioides (L.) Mosyakin & Clemants	Mexican Tea
Croton michauxii G.L. Webster	Michaux's croton
Minuartia michauxii (Fenzl) Farw.	Michaux's stitchwort
Lilium michiganense Farw.	Michigan lily
Erythronium mesochoreum Knerr	Midland Fawnlily
Lemna perpusilla Torr.	minute duckweed
Ranunculus laxicaulis (Torr. & A. Gray) Darby	Mississippi buttercup
Rudbeckia missouriensis Engelm. ex C.L. Boynt. & Beadle	Missouri Coneflower
Escobaria missouriensis (Sweet) D.R. Hunt	Missouri foxtail cactus
Solidago missouriensis Nutt.	Missouri goldenrod
Ribes missouriense Nutt.	Missouri Gooseberry
Cucurbita foetidissima Kunth	Missouri Gourd
Vernonia missurica Raf.	Missouri Ironweed
Phyllanthopsis phyllanthoides (Nutt.) Voronts. & Petra Hoffm.	Missouri Maidenbush
Salix eriocephala Michx.	Missouri River Willow
Viola missouriensis Greene	Missouri violet
Carya tomentosa (Lam.) Nutt.	Mockernut Hickory
Lunaria annua L.	Money Plant	✓
Phlox subulata L.	Moss Phlox
Verbascum blattaria L.	Moth Mullein
Rhododendron canescens (Michx.) Sweet	mountain azalea
Asplenium montanum Willd.	mountain spleenwort
Eragrostis lugens Nees	mourning lovegrass
Hordeum murinum L.	mouse barley
Arabidopsis thaliana (L.) Heynh.	mouseear cress
Helianthus simulans E.E. Watson	Muck Sunflower
Paspalum dissectum (L.) L.	mudbank crowngrass
Scleria muehlenbergii Steud.	Muehlenberg's nutrush
Carex muehlenbergii Schkuhr ex Willd.	Muhlenberg's sedge
Dasistoma macrophylla (Nutt.) Raf.	Mullein Foxglove
Tephrosia onobrychoides Nutt.	multibloom hoarypea
Rosa multiflora Thunb.	Multiflora Rose
Vitis rotundifolia Michx.	muscadine
Vitis mustangensis Buckley	mustang grape
Hylodesmum nudiflorum (L.) H.Ohashi & R.R.Mill	Nakedflower Ticktrefoil
Saccharum baldwinii Spreng.	narrow plumegrass
Claytonia virginica L.	Narrow-leaved Spring Beauty
Sisyrinchium angustifolium Mill.	narrowleaf blue-eyed grass
Typha angustifolia L.	narrowleaf cattail
Echinacea angustifolia DC.	narrowleaf coneflower
Oenothera fruticosa L.	Narrowleaf Evening Primrose
Physostegia angustifolia Fernald	narrowleaf false dragonhead
Mirabilis linearis (Pursh) Heimerl	Narrowleaf Four O'clock
Grindelia lanceolata Nutt.	narrowleaf gumweed
Vernonia lettermannii Engelm. ex A. Gray	Narrowleaf Ironweed
Montia linearis (Douglas ex Hook.) Greene	narrowleaf minerslettuce
Ipomoea shumardiana (Torr.) Shinners	Narrowleaf Morning-Glory
Pycnanthemum tenuifolium Schrad.	narrowleaf mountainmint
Leucospora multifida (Michx.) Nutt.	Narrowleaf Paleseed
Lechea tenuifolia Michx.	narrowleaf pinweed
Plantago lanceolata L.	Narrowleaf Plantain
Ludwigia linearis Walter	narrowleaf primrose-willow
Cleomella angustifolia Torr.	narrowleaf rhombopod
Sabatia brachiata Elliott	narrowleaf rose gentian
Pityopsis graminifolia (Michx.) Nutt.	narrowleaf silkgrass
Lithospermum incisum Lehm.	narrowleaf stoneseed
Helianthus angustifolius L.	Narrowleaf Sunflower	✓
Verbena simplex Lehm.	Narrowleaf Vervain
Veronica peregrina L.	neckweed
Rhynchospora capillacea Torr.	needle beaksedge
Eleocharis acicularis (L.) Roem. & Schult.	needle spikerush
Hesperostipa comata (Trin. & Rupr.) Barkworth	Needle-and-Thread Grass
Dichanthelium aciculare (Desv. ex Poir.) Gould & C.A. Clark	needleleaf rosette grass
Juncus scirpoides Lam.	needlepod rush
Celtis reticulata	Netleaf Hackberry
Clematis reticulata Walter	netleaf leather flower
Woodwardia areolata (L.) T. Moore	netted chainfern
Tragia urticifolia Michx.	nettleleaf noseburn
Symphyotrichum novae-angliae (L.) G.L. Nesom	New England Aster	✓
Ceanothus americanus L.	New Jersey tea
Rubus sons L.H. Bailey	New Orleans Dewberry
Parathelypteris noveboracensis (L.) Ching	New York Fern
Vernonia noveboracensis (L.) Michx.	New York Ironweed
Delphinium newtonianum D.M. Moore	Newton's Larkspur
Silene noctiflora L.	nightflowering silene
Muhlenbergia schreberi J.F. Gmel.	Nimblewill
Dalea enneandra Nutt.	nineanther prairie clover
Sagittaria papillosa Buchenau	nipplebract arrowhead
Hypericum drummondii (Grev. & Hook.) Torr. & A. Gray	nits and lice
Rhynchospora inexpansa (Michx.) Vahl	nodding beaksedge
Penstemon laxiflorus Pennell	Nodding Beardtongue
Bidens cernua L.	Nodding Beggartick
Festuca subverticillata (Pers.) Alexeev	nodding fescue
Spiranthes cernua (L.) Rich.	nodding lady's tresses
Allium cernuum Roth	Nodding Onion
Carduus nutans L.	nodding plumeless thistle
Nabalus crepidineus (Michx.) DC.	Nodding Rattlesnakeroot
Viola nephrophylla Greene	northern bog violet
Lycopus uniflorus Michx.	Northern Bugleweed
Catalpa speciosa (Warder) Warder ex Engelm.	Northern Catalpa
Rubus flagellaris Willd.	Northern Dewberry
Adiantum pedatum L.	Northern Maidenhair Fern
Quercus rubra L.	Northern Red Oak	✓
Chasmanthium latifolium (Michx.) Yates	Northern Sea Oats
Selaginella rupestris (L.) Spring	northern selaginella
Spiranthes lacera (Raf.) Raf.	Northern Slender Lady's Tresses
Lindera benzoin (L.) Blume	Northern Spicebush	✓
Hymenocallis occidentalis (Leconte) Kunth	northern spiderlily
Claytonia caroliniana Michx.	Northern Spring Beauty
Alisma triviale Pursh	Northern Water Plantain
Potentilla norvegica L.	Norwegian cinquefoil
Carya myristiciformis (Michx. f.) Nutt.	nutmeg hickory
Valeriana nuttallii (Torr. & A.Gray) Christenh. & Byng	Nuttall's Cornsalad
Toxicoscordion nuttallii (A.Gray) Rydb.	Nuttall's Deathcamas
Quercus texana Buckley	Nuttall's Oak
Nemastylis nuttallii Pickering ex R.C. Foster	Nuttall's Pleatleaf
Blitum nuttallianum Schult.	Nuttall's Povertyweed
Polytaenia nuttallii DC.	Nuttall's Prairie Parsley
Mimosa nuttallii (DC. ex Britton & Rose) B.L. Turner	Nuttall's sensitive-briar
Helianthus nuttallii Torr. & A. Gray	Nuttall's Sunflower
Desmodium nuttallii (Schindl.) B.G. Schub.	Nuttall's Ticktrefoil
Baptisia nuttalliana Small	Nuttall's wild indigo
Phoradendron leucarpum (Raf.) Reveal & M.C. Johnst.	Oak Mistletoe
Physostegia virginiana (L.) Benth.	obedient plant
Diarrhena obovata (Gleason) Brandenburg	Obovate Beakgrain
Phacelia ranunculacea (Nutt.) Constance	Oceanblue Phacelia
Spiranthes ovalis Lindl.	October lady's tresses
Aesculus glabra Willd.	Ohio Buckeye
Penstemon oklahomensis Pennell	Oklahoma Beardtongue
Rubus oklahomus L.H. Bailey	Oklahoma Blackberry
Calopogon oklahomensis D.H. Goldman	Oklahoma grasspink
Prunus gracilis Engelm. & A. Gray	Oklahoma plum
Carex oklahomensis Mack.	Oklahoma Sedge
Rubus alumnus L.H. Bailey	oldfield blackberry
Matelea decipiens (Alexander) Woodson	Oldfield Milkvine
Helenium campestre Small	Oldfield Sneezeweed
Hymenopappus artemisiifolius DC.	oldplainsman
Galium uniflorum Michx.	oneflower bedstraw
Hydrolea uniflora Raf.	oneflower false fiddleleaf
Cyperus retroflexus Buckley	oneflower flatsedge
Orobanche uniflora L.	oneflowered broomrape
Sicyos angulatus L.	Oneseed Bur Cucumber
Dichanthelium laxiflorum (Lam.) Gould	openflower rosette grass
Abdra aprica (Beadle) Al-Shehbaz, M.Koch & Jordon-Thaden	Openground Draba
Acmella repens (Walter) Rich.	Oppositeleaf Spotflower
Rudbeckia fulgida Aiton	Orange Coneflower
Hemerocallis fulva (L.) L.	orange daylily
Triosteum aurantiacum E.P. Bicknell	Orangefruit Horse-gentian
Hypericum gentianoides "(L.) Britton	orangegrass
Dactylis glomerata L.	Orchard Grass
Celastrus orbiculatus Thunb.	Oriental Bittersweet
Youngia japonica (L.) DC.	Oriental false hawksbeard
Persicaria longiseta	Oriental Lady's Thumb
Maclura pomifera (Raf.) C.K. Schneid.	Osage-orange	✓
Matteuccia struthiopteris (L.) Todaro	Ostrich Fern
Houstonia ouachitana (E.B. Sm.) Terrell	Ouachita Bluet
Amorpha ouachitensis Wilbur	Ouachita False Indigo
Solidago ouachitensis C.E.S. Taylor & R.J. Taylor	Ouachita Mountain Goldenrod
Carex ouachitana Kral, Manhart & Bryson	Ouachita Mountain Sedge
Carex cephalophora Muhl. ex Willd.	Oval-Headed Sedge
Hydrolea ovata Nutt. ex Choisy	ovate false fiddleleaf
Quercus lyrata Walter	Overcup Oak	✓
Leucanthemum vulgare Lam.	oxeye daisy
Astragalus distortus Torr. & A. Gray	Ozark milkvetch
Carex ozarkana P. Rothr. & Reznicek	Ozark Sedge
Tradescantia ozarkana E.S. Anderson & Woodson	Ozark Spiderwort
Hamamelis vernalis Sarg.	Ozark Witchhazel
Penstemon pallidus Small	Pale Beardtongue
Rumex altissimus Alph. Wood	pale dock
Arnoglossum atriplicifolium (L.) H. Rob.	Pale Indian Plantain
Clematis versicolor Small ex Rydb.	Pale Leather Flower
Lobelia appendiculata A. DC.	Pale Lobelia
Echinacea pallida (Nutt.) Nutt.	Pale Purple Coneflower
Persicaria lapathifolia (L.) Delarbre	Pale Smartweed
Impatiens pallida Nutt.	Pale Touch-Me-Not
Platanthera flava (L.) Lindl.	palegreen orchid
Helianthus strumosus L.	paleleaf woodland sunflower
Lobelia spicata Lam.	Palespike Lobelia
Ipomoea heptaphylla Sweet	Palm Leaf Morning Glory
Valeriana arkansana Christenh. & Byng	Palmer's Cornsalad
Pediomelum digitatum (Nutt. ex Torr. & A. Gray) Isely	palmleaf Indian breadroot
Callirhoe pedata (Nutt. ex Hook.) A. Gray	Palmleaf Poppymallow
Amorpha paniculata Torr. & A. Gray	Panicled False Indigo
Desmodium paniculatum (L.) DC.	panicledleaf ticktrefoil
Broussonetia papyrifera (L.) L'Hér. ex Vent.	Paper Mulberry
Malus pumila Mill.	paradise apple
Carex umbellata Schkuhr ex Willd.	Parasol Sedge
Antennaria parlinii Fernald	Parlin's pussytoes
Myriophyllum aquaticum (Vell.) Verdc.	Parrot Feather Watermilfoil
Crataegus marshallii Eggl.	parsley hawthorn
Chamaecrista fasciculata (Michx.) Greene	Partridge Pea	✓
Mitchella repens L.	Partridgeberry	✓
Heliotropium tenellum (Nutt.) Torr.	pasture heliotrope
Cyperus brevifolioides Thieret & Delahouss.	Pasture Spikesedge
Asimina triloba (L.) Dunal	Pawpaw
Prunus persica (L.) Batsch	Peach
Crataegus calpodendron (Ehrh.) Medik.	pear hawthorn
Carya illinoinensis (Wangenh.) K. Koch	Pecan
Cardamine pensylvanica Muhl. ex Willd.	Pennsylvania bittercress
Rubus pensilvanicus Poir.	Pennsylvania Blackberry
Gamochaeta pensylvanica (Willd.) Cabrera	Pennsylvania everlasting
Parietaria pensylvanica Muhl. ex Willd.	Pennsylvania Pellitory
Carex pensylvanica Lam.	Pennsylvania sedge
Polygonum pensylvanicum L.	Pennsylvania Smartweed
Iva asperifolia Less.	Pensacola marsh elder
Mentha ×piperita	Peppermint
Nekemias arborea (L.) J. Wen & Boggan	Peppervine
Lathyrus latifolius L.	perennial pea
Lolium perenne L.	Perennial Ryegrass
Uvularia perfoliata L.	perfoliate bellwort
Gaillardia suavis (A. Gray & Engelm.) Britton & Rusby	perfumeballs
Desmodium perplexum B.G. Schub.	perplexed ticktrefoil
Albizia julibrissin Durazz.	Persian Silktree
Cuscuta obtusiflora Kunth	Peruvian dodder
Physalis peruviana L.	Peruvian Groundcherry
Lepuropetalon spathulatum Elliott	Petiteplant
Erigeron philadelphicus L.	Philadelphia Fleabane
Panicum philadelphicum Bernh. ex Trin.	Philadelphia panicgrass
Lilium philippinense Baker	Philippine Lily
Heliotropium convolvulaceum (Nutt.) A. Gray	phlox heliotrope
Pontederia cordata L.	Pickerelweed
Stylisma pickeringii (Torr. ex M.A. Curtis) A. Gray	Pickering's dawnflower
Cruciata pedemontana (Bellardi) Ehrend.	piedmont bedstraw
Lyonia mariana (L.) D. Don	Piedmont Staggerbush
Carya glabra (Mill.) Sweet	Pignut Hickory
Quercus palustris Münchh.	Pin Oak	✓
Cyperus retrorsus Chapm.	Pine Barren Flatsedge
Asclepias obovata Elliott	pineland milkweed
Acalypha ostryifolia Riddell	Pineland Threeseed Mercury
Streptanthus squamiformis Goodman	Pineoak Jewelflower
Sporobolus junceus (P. Beauv.) Kunth	pineywoods dropseed
Oenothera speciosa Nutt.	Pink Evening Primrose
Strophostyles umbellata (Muhl. ex Willd.) Britton	pink fuzzybean
Glandularia pumila (Rydb.) Umber	pink mock vervain
Fleischmannia incarnata (Walter) R.M. King & H. Rob.	pink thoroughwort
Liatris elegans (Walter) Michx.	pinkscale blazing star
Mononeuria patula (Michx.) Dillenb. & Kadereit	Pitcher's Stitchwort
Paspalum bifidum (Bertol.) Nash	pitchfork crowngrass
Chenopodium berlandieri Moq.	Pitseed Goosefoot
Gentiana alba Muhl. ex Nutt.	plain gentian
Eragrostis intermedia Hitchc.	plains lovegrass
Allium perdulce S.V. Fraser	plains onion
Ammoselinum popei Torr. & A. Gray	plains sandparsley
Froelichia floridana (Nutt.) Moq.	plains snakecotton
Planera aquatica J.F. Gmel.	Planertree
Astragalus plattensis Nutt.	Platte River milkvetch
Polygonum tenue Michx.	pleatleaf knotweed
Cyperus plukenetii Fernald	Plukenet's Flatsedge
Macleaya cordata (Willd.) R. Br.	Plume Poppy
Narcissus poeticus L.	poet's narcissus

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