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2377 Plants Found

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Ordered by common name.

Scientific Name	Common Name	†	Map‡
Berteroa incana (L.) DC.	hoary alyssum
Philadelphus pubescens Loisel.	Hoary Mock Orange
Lithospermum canescens (Michx.) Lehm.	hoary puccoon
Dieteria canescens (Pursh) Nutt.	Hoary Tansyaster
Desmodium canescens (L.) DC.	hoary ticktrefoil
Verbena stricta Vent.	Hoary Vervain
Solanum physalifolium Rusby	hoe nightshade
Alcea rosea L.	hollyhock
Crataegus holmesiana Ashe	Holmes' Hawthorn
Cryptotaenia canadensis (L.) DC.	Honewort	✓
Gleditsia triacanthos L.	Honeylocust
Sagittaria calycina Engelm.	hooded arrowhead
Corallorhiza striata Lindl.	hooded coralroot
Spiranthes romanzoffiana Cham.	hooded lady's tresses
Setaria verticillata (L.) P. Beauv.	hooked bristlegrass
Viola adunca Sm.	hookedspur violet
Platanthera hookeri (Torr. ex A. Gray) Lindl.	Hooker's orchid
Carex hookeriana Dewey	Hooker's sedge
Carex lupulina Muhl. ex Willd.	hop sedge
Thelesperma megapotamicum (Spreng.) Kuntze	Hopi Tea Greenthread
Utricularia cornuta Michx.	Horned Bladderwort
Zannichellia palustris L.	Horned Pondweed
Aesculus hippocastanum L.	horse chestnut
Baptisia tinctoria (L.) R. Br.	Horseflyweed
Armoracia rusticana G. Gaertn., B. Mey. & Scherb.	Horseradish
Conyza canadensis (L.) Cronquist	Horseweed	✓
Cyperus houghtonii Torr.	Houghton's flatsedge
Carex houghtoniana Torr. ex Dewey	Houghton's sedge
Cynoglossum officinale L.	Houndstongue
Antennaria howellii Greene	Howell's pussytoes
Utricularia gibba L.	Humped Bladderwort
Platanthera huronensis (Nutt.) Lindl.	Huron green orchid
Physalis pubescens L.	Husk Tomato
Hyssopus officinalis L.	hyssop
Desmanthus illinoensis (Michx.) MacMill. ex B.L. Rob. & Fernald	Illinois Bundleflower
Smilax illinoensis Mangaly	Illinois greenbrier
Desmodium illinoense A. Gray	Illinois ticktrefoil
Medeola virginiana L.	Indian cucumber
Eleusine indica (L.) Gaertn.	Indian goosegrass
Achnatherum hymenoides (Roem. & Schult.) Barkworth	Indian Ricegrass
Lobelia inflata L.	Indian Tobacco
Carex grisea Wahlenb.	inflated narrow-leaf sedge
Ceanothus herbaceus Raf.	Inland New Jersey Tea
Juncus interior Wiegand	inland rush
Carex interior L.H. Bailey	inland sedge
Amelanchier interior E.L. Nielsen	inland serviceberry
Apocynum ×floribundum	Intermediate Dogbane
Nuphar ×rubrodisca Morong	Intermediate Pond-Lily
Dryopteris intermedia (Muhl. ex Willd.) A. Gray	intermediate woodfern
Osmunda claytoniana L.	interrupted fern
Salvia pratensis L.	introduced sage
Lycopodiella inundata (L.) Holub	inundated clubmoss
Botrychium campestre W.H. Wagner & Farrar	Iowa moonwort
Anchusa azurea Mill.	Italian Bugloss
Rubus ithacanus L.H. Bailey	Ithaca blackberry
Ipomoea hederacea Jacq.	Ivyleaf Morning-Glory
Arisaema triphyllum (L.) Schott	Jack in the Pulpit
Pinus banksiana Lamb.	Jack Pine
Tragopogon pratensis L.	Jack-go-to-bed-at-noon
Polemonium reptans L.	Jacob's Ladder
Holosteum umbellatum L.	Jagged Chickweed
Polanisia jamesii (Torr. & A. Gray) Iltis	James' clammyweed
Carex jamesii Schwein.	James' sedge
Berberis thunbergii DC.	Japanese barberry
Lonicera japonica Thunb.	Japanese Honeysuckle	✓
Spiraea japonica L. f.	Japanese meadowsweet
Kerria japonica (L.) DC.	Japanese rose
Helianthus tuberosus L.	Jerusalem Artichoke
Dysphania botrys (L.) Mosyakin & Clemants	Jerusalem Oak Goosefoot
Crataegus jesupii Sarg.	Jesup's hawthorn
Primula fassettii A.R.Mast & Reveal	Jeweled Shootingstar
Impatiens capensis Meerb.	Jewelweed
Datura stramonium L.	Jimsonweed
Viola tricolor L.	johnny jumpup
Sorghum halepense (L.) Pers.	Johnsongrass
Eleocharis equisetoides (Elliott) Torr.	jointed spikesedge
Juncus articulatus L.	jointleaf rush
Persicaria virginiana L.	Jumpseed
Rubus uvidus L.H. Bailey	Kalamazoo Dewberry
Hypericum kalmianum L.	Kalm's St. Johnswort
Cymbalaria muralis G. Gaertn., B. Mey. & Scherb.	Kenilworth Ivy
Rubus kennedyanus Fernald	Kennedy's blackberry
Gymnocladus dioicus (L.) K. Koch	Kentucky Coffeetree
Cladrastis kentukea (Dum. Cours.) Rudd	Kentucky Yellowwood
Thalictrum pubescens Pursh	King of the Meadow
Rubus multifer L.H. Bailey	kinnickinnick dewberry
Arctostaphylos uva-ursi (L.) Spreng.	Kinnikinnick
Salvia officinalis L.	kitchen sage
Rubus bellobatus L.H. Bailey	Kittatinny Blackberry
Carex retrorsa Schwein.	knotsheath sedge
Juncus nodosus L.	knotted rush
Kummerowia stipulacea (Maxim.) Makino	Korean Clover
Zoysia japonica Steud.	Korean lawngrass
Pueraria montana (Lour.) Merr.	Kudzu
Ranunculus rhomboideus Goldie	Labrador Buttercup
Eragrostis capillaris (L.) Nees	Lace Lovegrass
Tanacetum bipinnatum (L.) Sch. Bip.	Lake Huron Tansy
Isoetes lacustris L.	lake quillwort
Rorippa aquatica (Eaton) E.J.Palmer & Steyerm.	Lakecress
Senecio integerrimus Nutt.	lambstongue ragwort
Scrophularia lanceolata Pursh	lanceleaf figwort
Phyla lanceolata (Michx.) Greene	Lanceleaf Fogfruit
Botrychium lanceolatum (S.G. Gmel.) Angstr.	lanceleaf grapefern
Lysimachia lanceolata Walter	Lanceleaf Loosestrife
Ambrosia bidentata Michx.	Lanceleaf Ragweed
Salvia reflexa Hornem.	Lanceleaf Sage
Coreopsis lanceolata L.	Lanceleaf Tickseed
Galium lanceolatum Torr.	lanceleaf wild licorice
Rhododendron lapponicum (L.) Wahlenb.	Lapland Rosebay
Vaccinium macrocarpon Aiton	Large Cranberry
Leucophysalis grandiflora (Hook.) Rydb.	large false groundcherry
Pediomelum esculentum (Pursh) Rydb.	large Indian breadroot
Hypericum majus (A. Gray) Britton	large St. Johnswort
Cardamine maxima (Nutt.) Alph. Wood	large toothwort
Isotria verticillata Raf.	large whorled pogonia
Lysimachia punctata L.	large yellow loosestrife
Penstemon bradburyi Pursh	Large-flowered Beardtongue
Camelina sativa (L.) Crantz	Large-seeded False Flax
Populus grandidentata Michx.	Large-tooth Aspen
Desmodium cuspidatum (Muhl. ex Willd.) DC. ex D. Don	Largebract Ticktrefoil
Plantago aristata Michx.	Largebracted Plantain
Uvularia grandiflora Sm.	largeflower bellwort
Coreopsis grandiflora Hogg ex Sweet	Largeflower Tickseed
Aureolaria grandiflora (Benth.) Pennell	largeflower yellow false foxglove
Sanicula trifoliata E.P. Bicknell	Largefruit Blacksnakeroot
Geum macrophyllum Willd.	largeleaf avens
Potamogeton amplifolius Tuck.	largeleaf pondweed
Lechea intermedia Leggett ex Britton	largepod pinweed
Eupatorium serotinum Michx.	Late Boneset	✓
Salix pentandra L.	Laurel Willow
Utricularia resupinata B.D. Greene ex Bigelow	lavender bladderwort
Bellis perennis L.	lawndaisy
Astragalus laxmannii Jacq.	Laxmann's milkvetch
Amorpha canescens Pursh	Lead Plant
Potamogeton foliosus Raf.	Leafy Pondweed
Dalea foliosa (A. Gray) Barneby	Leafy Prairie Clover
Chamaedaphne calyculata (L.) Moench	Leatherleaf
Polygonum achoreum S.F. Blake	leathery knotweed
Dichanthelium leibergii (Vasey) Freckmann	Leiberg's panicum
Nymphaea leibergii Morong	Leiberg's waterlily
Thymus pulegioides L.	lemon thyme
Vicia tetrasperma (L.) Schreb.	lentil vetch
Utricularia minor L.	lesser bladderwort
Carex adusta Boott	lesser brown sedge
Arctium minus Bernh.	Lesser Burdock
Hypericum canadense L.	lesser Canadian St. Johnswort
Gentianopsis virgata (Raf.) Holub	lesser fringed gentian
Centaurea nigra L.	lesser knapweed
Carex diandra Schrank	lesser panicled sedge
Carex acutiformis Ehrh.	Lesser Pond Sedge
Platanthera psycodes (L.) Lindl.	Lesser Purple Fringed Orchid
Goodyera repens (L.) R. Br.	Lesser Rattlesnake Plantain
Platanthera orbiculata (Pursh) Lindl.	lesser roundleaved orchid
Cypripedium parviflorum Salisb.	Lesser Yellow Lady's Slipper
Linum lewisii Pursh	Lewis flax
Galium circaezans Michx.	licorice bedstraw
Penstemon gracilis Nutt.	Lilac Penstemon
Lonicera dioica L.	Limber Honeysuckle
Cardamine douglassii Britton	limestone bittercress
Clinopodium arkansanum (Nutt.) House	limestone calamint
Carex granularis Muhl. ex Willd.	limestone meadow sedge
Galium brevipes Fernald & Wiegand	limestone swamp bedstraw
Symphyotrichum ciliolatum (Lindl.) Á. Löve & D. Löve	Lindley's aster
Vaccinium vitis-idaea L.	lingonberry
Hordeum pusillum Nutt.	Little Barley
Schizachyrium scoparium (Michx.) Nash	Little Bluestem
Lemna obscura (Austin) Daubs	little duckweed
Oenothera perennis L.	Little Evening Primrose
Botrychium mormo W.H. Wagner	little goblin moonwort
Botrychium simplex E. Hitchc.	little grapefern
Carex viridula Michx.	little green sedge
Eragrostis minor Host	little lovegrass
Chamaerhodos erecta (L.) Bunge	little rose
Rhinanthus minor L.	little yellow rattle
Antennaria microphylla Rydb.	littleleaf pussytoes
Camelina microcarpa Andrz. ex DC.	littlepod false flax
Pyrola asarifolia Michx.	Liverleaf Wintergreen
Carex livida (Wahlenb.) Willd.	livid sedge
Populus nigra L.	Lombardy poplar
Phegopteris connectilis (Michx.) Watt	long beechfern
Carex inops L.H. Bailey	Long-stolon Sedge
Rhynchospora scirpoides (Torr.) A. Gray	longbeak beaksedge
Ranunculus longirostris Godr.	Longbeak Buttercup
Dactylorhiza viridis (L.) R.M. Bateman, A.M. Pridgeon & M.W. Chase	Longbract Frog Orchid
Tradescantia bracteata Small	longbract spiderwort
Crocanthemum canadense (L.) Britton	Longbranch Frostweed
Oenothera filiformis (Small) W.L. Wagner & Hoch	Longflower Beeblossom
Carex comosa Boott	longhair sedge
Symphyotrichum robynsianum (Rouss.) L. Brouillet & Labrecque	longleaf aster
Physalis longifolia Nutt.	Longleaf Groundcherry
Asclepias longifolia Michx.	longleaf milkweed
Potamogeton nodosus Poir.	longleaf pondweed
Stellaria longifolia Muhl. ex Willd.	longleaf starwort
Houstonia longifolia Gaertn.	longleaf summer bluet
Viola rostrata Pursh	longspur violet
Carex pedunculata Muhl. ex Willd.	longstalk sedge
Stellaria longipes Goldie	longstalk starwort
Juncus longistylis Torr.	longstyle rush
Osmorhiza longistylis (Torr.) DC.	longstyle sweetroot
Astragalus tenellus Pursh	Looseflower Milkvetch
Astragalus lotiflorus Hook.	lotus milkvetch
Cynanchum louiseae Kartesz & Gandhi	Louise's swallow-wort
Orobanche ludoviciana Nutt.	Louisiana Broomrape
Gypsophila muralis L.	Low Baby's-Breath
Calystegia spithamaea (L.) Pursh	low false bindweed
Malva pusilla Sm.	Low Mallow
Carex concinna R. Br.	low northern sedge
Scleria verticillata Muhl. ex Willd.	low nutrush
Myriophyllum humile (Raf.) Morong	low watermilfoil
Vaccinium angustifolium Aiton	Lowbush Blueberry
Cystopteris protrusa (Weath.) Blasdell	lowland bladderfern
Rotala ramosior (L.) Koehne	lowland rotala
Lysimachia hybrida Michx.	Lowland Yellow Loosestrife
Rubus roribaccus (L.H. Bailey) Rydb.	Lucretia Dewberry
Arabidopsis lyrata (L.) O'Kane & Al-Shehbaz	Lyrate Rockcress
Ranunculus macounii Britton	Macoun's buttercup
Pseudognaphalium macounii (Greene) Kartesz	Macoun's cudweed
Euphorbia helioscopia L.	madwoman's milk
Dianthus deltoides L.	maiden pink
Asplenium trichomanes L.	maidenhair spleenwort
Silene vulgaris (Moench) Garcke	maidenstears
Diplachne fusca (L.) P.Beauv. ex Roem. & Schult.	Malabar Sprangletop
Dryopteris filix-mas (L.) Schott	male fern
Thladiantha dubia Bunge	Manchu tubergourd
Ludwigia polycarpa Short & Peter	Manyfruit Primrose-willow
Carex sychnocephala Carey	manyhead sedge
Chenopodiastrum simplex (Torr.) S.Fuentes, Uotila & Borsch	Mapleleaf Goosefoot
Viburnum acerifolium L.	Mapleleaf Viburnum
Dryopteris marginalis (L.) A. Gray	marginal woodfern
Cannabis sativa L.	Marijuana
Campanula aparinoides Pursh	marsh bellflower
Viola cucullata Aiton	Marsh Blue Violet
Gnaphalium uliginosum L.	marsh cudweed
Tephroseris palustris (L.) Schrenk ex Rchb.	Marsh Fleabane
Parnassia palustris L.	marsh grass of Parnassus
Stachys palustris L.	Marsh Hedgenettle
Equisetum palustre L.	marsh horsetail
Proserpinaca palustris L.	marsh mermaidweed
Muhlenbergia racemosa "(Michx.) Britton	marsh muhly
Lathyrus palustris L.	marsh pea
Ludwigia palustris (L.) Elliott	marsh seedbox
Scutellaria galericulata L.	marsh skullcap
Cirsium palustre (L.) Scop.	marsh thistle
Epilobium palustre L.	marsh willowherb
Sanicula marilandica L.	Maryland Sanicle
Amaranthus blitoides S. Watson	Mat Amaranth
Muhlenbergia richardsonis (Trin.) Rydb.	mat muhly
Cenchrus longispinus (Hack.) Fernald	Mat Sandbur
Botrychium matricariifolium (A. Braun ex Dowell) A. Braun ex W.D.J. Koch	matricary grapefern
Lycium barbarum L.	matrimony vine
Eleocharis intermedia Schult.	matted spikerush
Helianthus maximiliani Schrad.	Maximilian Sunflower
Podophyllum peltatum L.	Mayapple	✓
Salix maccalliana Rowlee	McCalla's willow
Carex meadii Dewey	Mead's sedge
Oenothera pilosella Raf.	Meadow Evening Primrose
Schedonorus pratensis (Huds.) P. Beauv.	meadow fescue
Alopecurus pratensis L.	meadow foxtail
Allium canadense L.	Meadow Garlic
Hieracium caespitosum Dumort.	meadow hawkweed
Equisetum pratense Ehrh.	meadow horsetail
Thaspium trifoliatum (L.) A. Gray	Meadow Parsnip
Lathyrus pratensis L.	meadow pea
Stellaria palustris Ehrh. ex Hoffm.	Meadow Starwort
Salix petiolaris Sm.	meadow willow
Azolla microphylla Kaulf.	Mexican Mosquito Fern
Muhlenbergia mexicana (L.) Trin.	Mexican Muhly
Dysphania ambrosioides (L.) Mosyakin & Clemants	Mexican Tea
Minuartia michauxii (Fenzl) Farw.	Michaux's stitchwort
Lilium michiganense Farw.	Michigan lily
Botrychium minganense Victorin	Mingan Moonwort
Erythronium propullans A. Gray	Minnesota Fawnlily
Lemna perpusilla Torr.	minute duckweed
Crataegus jonesiae Sarg.	Miss Jones' hawthorn
Rubus missouricus L.H. Bailey	Missouri Dewberry
Solidago missouriensis Nutt.	Missouri goldenrod
Ribes missouriense Nutt.	Missouri Gooseberry
Salix eriocephala Michx.	Missouri River Willow
Viola missouriensis Greene	Missouri violet
Primula mistassinica Michx.	Mistassini primrose
Cypripedium acaule Aiton	Moccasin Flower
Dracocephalum moldavica L.	Moldavian Dragonhead
Lunaria annua L.	Money Plant	✓
Juncus stygius L.	moor rush
Lonicera morrowii A. Gray	Morrow's Honeysuckle
Scirpus hattorianus Makino	mosquito bulrush
Phlox subulata L.	Moss Phlox
Verbascum blattaria L.	Moth Mullein
Anticlea elegans (Pursh) Rydb.	Mountain Deathcamas
Lonicera villosa (Michx.) Schult.	mountain fly honeysuckle
Acer spicatum Lam.	Mountain Maple
Betula cordifolia	Mountain Paper Birch
Piptatheropsis pungens "(Torr.) Romasch.	mountain ricegrass
Descurainia incana (Bernh. ex Fisch. & C.A. Mey.) Dorn	Mountain Tansymustard
Valeriana uliginosa (Torr. & A. Gray) Rydb.	mountain valerian
Oxalis montana Raf.	Mountain Woodsorrel
Arabidopsis thaliana (L.) Heynh.	mouseear cress
Hieracium pilosella L.	mouseear hawkweed
Solidago simplex Kunth	Mt. Albert goldenrod
Carex limosa L.	mud sedge
Carex muehlenbergii Schkuhr ex Willd.	Muhlenberg's sedge
Rosa multiflora Thunb.	Multiflora Rose
Malva moschata L.	Musk Mallow
Mimulus moschatus Douglas ex Lindl.	muskflower
Carex muskingumensis Schwein.	Muskingum Sedge
Adoxa moschatellina L.	muskroot
Mitella nuda L.	naked miterwort
Hylodesmum nudiflorum (L.) H.Ohashi & R.R.Mill	Nakedflower Ticktrefoil
Prunus tomentosa Thunb.	Nanking cherry
Viburnum lentago L.	Nannyberry
Claytonia virginica L.	Narrow-leaved Spring Beauty
Cardamine impatiens L.	narrowleaf bittercress
Sisyrinchium angustifolium Mill.	narrowleaf blue-eyed grass
Sparganium angustifolium Michx.	narrowleaf bur-reed
Typha angustifolia L.	narrowleaf cattail
Echinacea angustifolia DC.	narrowleaf coneflower
Melampyrum lineare Desr.	narrowleaf cowwheat
Rumex stenophyllus Ledeb.	narrowleaf dock
Crepis tectorum L.	narrowleaf hawksbeard
Galeopsis angustifolia Ehrh. ex Hoffm.	Narrowleaf Hempnettle
Pycnanthemum tenuifolium Schrad.	narrowleaf mountainmint
Lechea tenuifolia Michx.	narrowleaf pinweed
Plantago lanceolata L.	Narrowleaf Plantain
Potamogeton strictifolius Benn.	narrowleaf pondweed
Lithospermum incisum Lehm.	narrowleaf stoneseed
Verbena simplex Lehm.	Narrowleaf Vervain
Alisma gramineum Lej.	narrowleaf water plantain
Juncus brevicaudatus (Engelm.) Fernald	narrowpanicle rush
Carex projecta Mack.	necklace sedge
Carex ormostachya Wiegand	necklace spike sedge
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
Carex duriuscula C.A. Mey.	needleleaf sedge
Sisyrinchium mucronatum Michx.	needletip blue-eyed grass
Carex leptonervia (Fernald) Fernald	nerveless woodland sedge
Scleria reticularis Michx.	netted nutrush
Symphyotrichum novae-angliae (L.) G.L. Nesom	New England Aster	✓
Viola novae-angliae House	New England Blue Violet
Carex novae-angliae Schwein.	New England sedge
Ceanothus americanus L.	New Jersey tea
Parathelypteris noveboracensis (L.) Ching	New York Fern
Crataegus ×desueta Sarg.	New York Hawthorn
Silene noctiflora L.	nightflowering silene
Muhlenbergia schreberi J.F. Gmel.	Nimblewill
Achillea nobilis L.	noble yarrow
Bidens cernua L.	Nodding Beggartick
Cerastium nutans Raf.	nodding chickweed
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
Salvia nutans L.	Nodding Sage
Carex gynandra Schwein.	nodding sedge
Hackelia deflexa (Wahlenb.) Opiz	nodding stickseed
Trillium flexipes Raf.	nodding wakerobin
Najas flexilis (Willd.) Rostk. & Schmidt	Nodding Waternymph
Ventenata dubia (Leers) Coss.	North Africa grass
Carex cryptolepis Mack.	northeastern sedge
Ophioglossum pusillum Raf.	northern adderstongue
Galium boreale L.	northern bedstraw
Ribes hudsonianum Richardson	Northern Black Currant
Symphyotrichum boreale (Torr. & A. Gray) Á. Löve & D. Löve	northern bog aster
Galium labradoricum (Wiegand) Wiegand	northern bog bedstraw
Carex gynocrates Wormsk. ex Drejer	northern bog sedge
Viola nephrophylla Greene	northern bog violet
Lycopus uniflorus Michx.	Northern Bugleweed
Diervilla lonicera Mill.	northern bush honeysuckle
Catalpa speciosa (Warder) Warder ex Engelm.	Northern Catalpa
Carex arcta Boott	northern cluster sedge
Rubus flagellaris Willd.	Northern Dewberry
Oenothera parviflora L.	northern evening primrose
Platanthera aquilonis Sheviak	northern green orchid
Juncus alpinoarticulatus Chaix	northern green rush
Crataegus dissona Sarg.	northern hawthorn
Polystichum lonchitis (L.) Roth	northern hollyfern
Lomatium orientale J.M. Coult. & Rose	Northern Idaho biscuitroot
Carex folliculata L.	northern long sedge
Adiantum pedatum L.	Northern Maidenhair Fern
Sorbus decora (Sarg.) C.K. Schneid.	northern mountain ash
Dichanthelium boreale (Nash) Freckmann	northern panicgrass
Quercus rubra L.	Northern Red Oak	✓
Carex deflexa Hornem.	northern sedge
Selaginella rupestris (L.) Spring	northern selaginella
Brachyelytrum aristosum (Michx.) Trel.	northern shorthusk
Carex scirpoidea Michx.	northern singlespike sedge
Spiranthes lacera (Raf.) Raf.	Northern Slender Lady's Tresses
Lindera benzoin (L.) Blume	Northern Spicebush	✓
Claytonia caroliniana Michx.	Northern Spring Beauty
Hypericum boreale (Britton) E.P. Bicknell	Northern St. Johnswort
Hierochloe hirta (Schrank) Borbás	Northern Sweetgrass
Alisma triviale Pursh	Northern Water Plantain
Callitriche hermaphroditica L.	northern water-starwort
Wolffia borealis (Engelm. ex Hegelm.) Landolt ex Landolt & Wildi	northern watermeal
Thuja occidentalis L.	Northern White-Cedar	✓
Zizania palustris L.	Northern Wildrice
Viola septentrionalis Greene	Northern Woodland Violet
Xyris montana Ries	northern yelloweyed grass
Carex utriculata Boott	Northwest Territory sedge
Acer platanoides L.	Norway Maple	✓
Picea abies (L.) Karst.	Norway Spruce	✓
Potentilla norvegica L.	Norwegian cinquefoil
Puccinellia nuttalliana (Schult.) Hitchc.	Nuttall's Alkaligrass
Oenothera nuttallii Sweet	Nuttall's Evening Primrose
Blitum nuttallianum Schult.	Nuttall's Povertyweed
Polytaenia nuttallii DC.	Nuttall's Prairie Parsley
Helianthus nuttallii Torr. & A. Gray	Nuttall's Sunflower
Oenothera oakesiana (A. Gray) J.W. Robbins ex S. Watson & J.M. Coult.	Oakes' Evening Primrose
Potamogeton oakesianus J.W. Robbins	Oakes' pondweed
Physostegia virginiana (L.) Benth.	obedient plant
Amelanchier bartramiana (Tausch) M. Roem.	oblongfruit serviceberry
Diarrhena obovata (Gleason) Brandenburg	Obovate Beakgrain
Carex obtusata Lilj.	obtuse sedge
Aesculus glabra Willd.	Ohio Buckeye
Oligoneuron ohioense (Frank ex Riddell) G.N. Jones	Ohio goldenrod
Calopogon oklahomensis D.H. Goldman	Oklahoma grasspink
Abelmoschus esculentus (L.) Moench	Okra
Geum triflorum Pursh	Old Man's Whiskers
Rubus alumnus L.H. Bailey	oldfield blackberry
Poa saltuensis Fernald & Wiegand	oldpasture bluegrass
Artemisia stelleriana Besser	oldwoman
Lycopodium lagopus (Laest. ex Hartm.) Zinserl. ex Kuzen	one-cone clubmoss
Orobanche uniflora L.	oneflowered broomrape
Nasturtium microphyllum Boenn. ex Rchb.	onerow yellowcress
Sicyos angulatus L.	Oneseed Bur Cucumber
Crataegus monogyna Jacq.	oneseed hawthorn
Liatris cylindracea Michx.	Ontario blazing star
Crataegus nitidula Sarg.	Ontario Hawthorn
Lobelia kalmii L.	Ontario lobelia
Carex conoidea Schkuhr ex Willd.	openfield sedge
Papaver somniferum L.	opium poppy
Rudbeckia fulgida Aiton	Orange Coneflower
Hemerocallis fulva (L.) L.	orange daylily
Buddleja davidii Franch.	orange eye butterflybush
Verbascum phlomoides L.	orange mullein
Triosteum aurantiacum E.P. Bicknell	Orangefruit Horse-gentian
Hypericum gentianoides "(L.) Britton	orangegrass
Dactylis glomerata L.	Orchard Grass
Origanum vulgare L.	Oregano
Woodsia oregana D.C. Eaton	Oregon cliff fern
Celastrus orbiculatus Thunb.	Oriental Bittersweet
Persicaria longiseta	Oriental Lady's Thumb
Papaver orientale L.	Oriental poppy
Matteuccia struthiopteris (L.) Todaro	Ostrich Fern
Carex cephalophora Muhl. ex Willd.	Oval-Headed Sedge
Asclepias ovalifolia Decne.	oval-leaf milkweed
Leucanthemum vulgare Lam.	oxeye daisy
Anemone multifida Poir.	Pacific Anemone
Agoseris glauca (Pursh) Raf.	pale agoseris
Penstemon pallidus Small	Pale Beardtongue
Botrychium pallidum W.H. Wagner	pale botrychium
Rumex altissimus Alph. Wood	pale dock
Torreyochloa pallida (Torr.) Church	Pale False Mannagrass
Arnoglossum atriplicifolium (L.) H. Rob.	Pale Indian Plantain
Alyssum alyssoides (L.) L.	pale madwort
Echinacea pallida (Nutt.) Nutt.	Pale Purple Coneflower
Carex pallescens L.	pale sedge
Persicaria lapathifolia (L.) Delarbre	Pale Smartweed
Hypericum ellipticum Hook.	pale St. Johnswort
Impatiens pallida Nutt.	Pale Touch-Me-Not
Platanthera flava (L.) Lindl.	palegreen orchid
Helianthus strumosus L.	paleleaf woodland sunflower
Lobelia spicata Lam.	Palespike Lobelia
Scirpus microcarpus J. Presl & C. Presl	panicled bulrush
Desmodium paniculatum (L.) DC.	panicledleaf ticktrefoil
Betula papyrifera Marshall	Paper Birch	✓
Malus pumila Mill.	paradise apple
Daphne mezereum L.	paradise plant
Carex umbellata Schkuhr ex Willd.	Parasol Sedge
Doellingeria umbellata (Mill.) Nees	parasol whitetop
Antennaria parlinii Fernald	Parlin's pussytoes
Chamaecrista fasciculata (Michx.) Greene	Partridge Pea	✓
Mitchella repens L.	Partridgeberry	✓
Prunus persica (L.) Batsch	Peach
Campanula persicifolia L.	peachleaf bellflower
Salix amygdaloides Andersson	peachleaf willow
Crataegus calpodendron (Ehrh.) Medik.	pear hawthorn
Carex peckii Howe	Peck's sedge
Cardamine pensylvanica Muhl. ex Willd.	Pennsylvania bittercress
Rubus pensilvanicus Poir.	Pennsylvania Blackberry
Ranunculus pensylvanicus L. f.	Pennsylvania buttercup
Potentilla pensylvanica L.	Pennsylvania cinquefoil
Lycopodium hickeyi (Beitel & R.C.Moran) W.H.Wagner, Beitel & R.C.Moran	Pennsylvania Clubmoss
Parietaria pensylvanica Muhl. ex Willd.	Pennsylvania Pellitory
Carex pensylvanica Lam.	Pennsylvania sedge
Polygonum pensylvanicum L.	Pennsylvania Smartweed
Mentha ×piperita	Peppermint
Centaurea montana L.	perennial cornflower
Scleranthus perennis L.	perennial knawel
Lathyrus latifolius L.	perennial pea
Briza media L.	perennial quakinggrass
Lolium perenne L.	Perennial Ryegrass
Diplotaxis tenuifolia (L.) DC.	perennial wallrocket
Desmodium perplexum B.G. Schub.	perplexed ticktrefoil
Erigeron philadelphicus L.	Philadelphia Fleabane
Panicum philadelphicum Bernh. ex Trin.	Philadelphia panicgrass
Pontederia cordata L.	Pickerelweed

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