| Scientific Name |
Common Name |
Native Status |
|
|
|
|
|
Pachysandra terminalis Sieb. & Zucc.
|
Pachysandra, Japanese-spurge |
I |
|
Packera anonyma (Wood) W.A. Weber & A. Love
|
Small's Ragwort |
N |
|
Packera antennariifolia (Britton) W.A. Weber & A. Love
|
Shale-barren Ragwort |
N |
|
Packera aurea (L.) A. & D. Love
|
Golden Ragwort, Heartleaf Ragwort |
N |
|
Packera crawfordii (Britton) A.M. Mahoney & R.R. Kowal
|
Crawford's Ragwort |
N |
|
Packera millefolium (T. & G.) W.A. Weber & A. Love
|
Yarrow-leaved Ragwort |
N |
|
Packera obovata (Muhl. ex Willd.) W.A. Weber & A. Love
|
Round-leaved Ragwort, Running Ragwort |
N |
|
Packera paupercula (Michaux) Á. & D. Löve var. appalachiana A.M. Mahoney;
|
Appalachian Ragwort |
N |
|
Packera paupercula (Michx.) A. & D. Love var. paupercula
|
Balsam Ragwort |
N |
|
Packera tomentosa (Michx.) C. Jeffrey
|
Woolly Ragwort |
N |
|
Pallavicinia lyellii (Hook.) Carruth.
|
|
N |
|
Palustricodon aparinoides (Pursh) Morin var. aparinoides
|
Marsh Bellflower |
N |
|
Panax quinquefolius L.
|
Ginseng, American Ginseng, Sang |
N |
|
Panicum amarulum Hitchc. & Chase
|
Beach Panic Grass, Southern Seabeach Grass |
N |
|
Panicum amarum complex
|
Sea-beach Grass, Beach Panic Grass |
N |
|
Panicum amarum Ell.
|
Bitter Seabeach Grass |
N |
|
Panicum capillare L. ssp. capillare
|
Witch Grass |
N |
|
Panicum dichotomiflorum Michx. var. dichotomiflorum
|
Spreading Panic Grass, Fall Panic Grass |
N |
|
Panicum flexile (Gattinger) Scribn.
|
Wiry Panic Grass |
N |
|
Panicum hemitomon J.A. Schultes
|
Maidencane |
N |
|
Panicum miliaceum L. ssp. miliaceum
|
Broomcorn Millet, Hog Millet |
I |
|
Panicum philadelphicum Bernh. ex Trin. ssp. gattingeri (Nash) Freckm. & Lelong
|
Gattinger's Panic Grass |
N |
|
Panicum philadelphicum Bernh. ex Trin. ssp. philadelphicum
|
Philadelphia Panic Grass |
N |
|
Panicum virgatum L.
|
Switchgrass |
N |
|
Panicum virgatum L. var. cubense Griseb.
|
Blunt Switchgrass |
N |
|
Panicum virgatum L. var. spissum Linder
|
Tufted Switchgrass |
N |
|
Panicum virgatum L. var. virgatum
|
Switchgrass |
N |
|
Papaver dubium L.
|
Field Poppy, Long-headed Poppy |
I |
|
Papaver orientale L.
|
Oriental Poppy |
I |
|
Papaver rhoeas L.
|
Corn Poppy |
I |
|
Papaver somniferum L.
|
Opium Poppy, Common Poppy |
I |
|
Paraleucobryum longifolium (Ehrh. ex Hedw.) Loeske
|
Silver Broom Moss |
N |
|
Parapholis incurva (L.) C.E. Hubbard
|
Sickle Grass |
I |
|
Parietaria judaica L.
|
Spreading Pellitory, Pellitory-of-the-wall |
I |
|
Parietaria pensylvanica Muhl. ex Willd.
|
Pennsylvania Pellitory, Rock Pellitory |
N |
|
Parnassia asarifolia Vent.
|
Kidney-leaved Grass-of-Parnassus, Appalachian Grass-of-Parnassus, Brook Parnassia |
N |
|
Parnassia grandifolia DC.
|
Large-leaved Grass-of-Parnassus, Bigleaf Grass-of-Parnassus |
N |
|
Parogonum ciliinode (Michaux) Desjardins & J.P. Bailey
|
Fringed Bindweed, Fringed Black Bindweed |
N |
|
Paronychia argyrocoma (Michx.) Nutt.
|
Silverling, Silver Whitlow-wort |
N |
|
Paronychia baldwinii (Torr. & Gray) Fenzl ex Walp. ssp riparia (Chapman) Chaudhri
|
Baldwin's Nailwort |
N |
|
Paronychia canadensis (L.) Wood
|
Smooth Forked Nailwort |
N |
|
Paronychia fastigiata (Raf.) Fern.
|
Hairy Forked Nailwort |
N |
|
Paronychia montana (Small) Pax & K. Hoffmann
|
Mountain Nailwort |
N |
|
Paronychia virginica Spreng. var. virginica
|
Yellow Nailwort |
N |
|
Parthenium auriculatum Britt.
|
Glade Wild Quinine |
N |
|
Parthenium integrifolium L. var. integrifolium
|
Common Wild Quinine |
N |
|
Parthenium integrifolium L. var. mabryanum Mears
|
Mabry's Wild Quinine |
N |
|
Parthenocissus inserta (Kern.) Fritsch
|
Thicket Creeper, Woodbine |
|
|
Parthenocissus quinquefolia (L.) Planch.
|
Virginia-creeper |
N |
|
Parthenocissus tricuspidata (Sieb. & Zucc.) Planch.
|
Boston-ivy |
I |
|
Paspalum bifidum (Bertol.) Nash
|
Pitchfork Paspalum, Pitchfork Crowngrass |
N |
|
Paspalum boscianum Fluegge
|
Bull Paspalum |
N |
|
Paspalum dilatatum Poir.
|
Dallis Grass |
I |
|
Paspalum dissectum (L.) L.
|
Walter's Paspalum, Mudbank Crowngrass |
N |
|
Paspalum distichum L.
|
Joint Paspalum, Knotgrass |
N |
|
Paspalum floridanum Michx.
|
Florida Paspalum |
N |
|
Paspalum laeve Michx.
|
Field Paspalum |
N |
|
Paspalum notatum Fluegge
|
Bahia Grass |
I |
|
Paspalum praecox Walter var. curtisianum (Steud.) Vasey
|
Early Paspalum |
N |
|
Paspalum pubiflorum Rupr. ex Fourn. var. glabrum Vasey
|
Hairy-seed Paspalum, Hairy-seed Crown-grass |
N |
|
Paspalum repens P.J. Bergius
|
Water Paspalum, Horsetail Paspalum |
N |
|
Paspalum setaceum Michx.
|
Thin Paspalum, Slender Paspalum |
N |
|
Paspalum setaceum Michx. var. ciliatifolium (Michx.) Vasey
|
Hairy Slender Paspalum |
N |
|
Paspalum setaceum Michx. var. mühlenbergii (Nash) Fern.
|
Muhlenberg's Slender Paspalum |
N |
|
Paspalum setaceum Michx. var. setaceum
|
Thin Paspalum, Slender Paspalum |
N |
|
Paspalum urvillei Steud.
|
Vasey's Grass |
I |
|
Passiflora incarnata L.
|
Purple Passionflower, Maypop |
N |
|
Passiflora lutea L.
|
Yellow Passionflower |
N |
|
Pastinaca sativa L.
|
Wild Parsnip |
I |
|
Patis racemosa (Sm.) Romasch., P.M. Peterson, & Soreng
|
Black-seed Ricegrass |
N |
|
Paulownia tomentosa (Thunb.) Steud.
|
Royal Paulownia, Princess Tree, Empress Tree |
I |
|
Paxistima canbyi A. Gray
|
Canby's Mountain-lover, Cliff-green, Rat-stripper |
N |
|
Pedicularis canadensis L.
|
Lousewort, Wood-betony |
N |
|
Pedicularis lanceolata Michx.
|
Swamp Lousewort |
N |
|
Pediomelum canescens (Michx.) Rydb.
|
Buckroot, Hoary Scurfpea |
N |
|
Pellaea atropurpurea (L.) Link
|
Purple Cliff-brake |
N |
|
Pellaea glabella Mett. ex Kuhn ssp. glabella
|
Smooth Cliff-brake |
N |
|
Pellia endiviifolia (Dicks.) Dumort.
|
|
N |
|
Pellia epiphylla (L.) Corda
|
|
N |
|
Pellia neesiana (Gottsche) Limpr.
|
|
N |
|
Peltandra virginica (L.) Schott
|
Arrow-arum, Tuckahoe |
N |
|
Penstemon australis Small
|
Southern Beard-tongue, Sandhill Beard-tongue |
N |
|
Penstemon brevisepalus Pennell
|
Short-sepaled Beard-tongue |
N |
|
Penstemon calycosus Small
|
Calico Beard-tongue, Long-sepal Beard-tongue |
N |
|
Penstemon canescens (Britt.) Britt.
|
Gray Beard-tongue, Eastern Gray Beard-tongue |
N |
|
Penstemon digitalis Nutt. ex Sims
|
Foxglove Beard-tongue, Tall White Beard-tongue |
|
|
Penstemon hirsutus (L.) Willd.
|
Hairy Beard-tongue |
N |
|
Penstemon laevigatus Aiton
|
Smooth Beard-tongue, Eastern Smooth Beard-tongue |
N |
|
Penstemon pallidus Small
|
Eastern Pale Beard-tongue |
N |
|
Penthorum sedoides L.
|
Ditch Stonecrop |
N |
|
Perilla frutescens (L.) Britt.
|
Perilla, Beefsteak Plant |
I |
|
Persicaria amphibia (L.) Gray
|
Water Smartweed |
N |
|
Persicaria arifolia (L.) Haraldson
|
Halberd-leaf Tearthumb |
N |
|
Persicaria densiflora (Meisner) Moldenke
|
Dense-flowered Smartweed |
N |
|
Persicaria extremiorientalis (Vorosch.) Tzvelev.
|
East Asian Smartweed |
I |
|
Persicaria filiformis (Thunb.) Nakai
|
Japanese Jumpseed |
I |
|
Persicaria hydropiper (L.) Spach
|
Marsh-pepper Smartweed, Water-pepper |
I |
|
Persicaria hydropiperoides (Michx.) Small
|
Mild Water-pepper, Marsh-pepper Smartweed |
N |
|
Persicaria lapathifolia (L.) Gray
|
Dock-leaf Smartweed, Pale Smartweed |
N |
|
Persicaria longiseta (Bruijn) Kitagawa
|
Long-bristled Smartweed, Bristly Lady's-Thumb |
I |
|
Persicaria maculosa Gray
|
Lady's-thumb, Spotted Lady's-thumb |
I |
|
Persicaria orientalis (L.) Spach
|
Kiss-me-over-the-garden-gate, Prince's-feather, Prince's-plume |
I |
|
Persicaria pensylvanica (L.) M. Gomez
|
Pennsylvania Smartweed, Pinkweed |
N |
|
Persicaria perfoliata (L.) H. Gross
|
Mile-a-minute Weed, Mile-a-minute Vine, Asiatic Tearthumb |
I |
|
Persicaria posumbu (Buch.-Ham. ex D. Don) H. Gross
|
Oriental Lady's-thumb |
I |
|
Persicaria punctata (Ell.) Small
|
Dotted Smartweed |
N |
|
Persicaria robustior (Small) E.P. Bicknell
|
Stout Smartweed |
N |
|
Persicaria sagittata (L.) H. Gross ex Nakai
|
Arrow-leaf Tearthumb |
N |
|
Persicaria setacea (Baldw.) Small
|
Bog Smartweed, Swamp Smartweed |
N |
|
Persicaria virginiana (L.) Gaertn.
|
Virginia Knotweed, Jumpseed |
N |
|
Petrorhagia prolifera (L.) P.W. Ball & Heywood
|
Childing Pink, Proliferous Pink |
I |
|
Petrorhagia saxifraga (L.) Link var. saxifraga
|
Saxifrage Pink |
I |
|
Petunia ×atkinsiana Loudon
|
|
I |
|
Phacelia bipinnatifida Michx.
|
Fernleaf Phacelia, Forest Phacelia |
N |
|
Phacelia covillei S. Wats. ex A. Gray
|
Coville’s Phacelia |
N |
|
Phacelia dubia (L.) Trel. var. dubia
|
Appalachian Phacelia |
N |
|
Phacelia fimbriata Michx.
|
Fringed Phacelia, Fringed Scorpion-weed |
N |
|
Phacelia purshii Buckl.
|
Miami-mist |
N |
|
Phaeoceros carolinianus (Michx.) Prosk.
|
|
N |
|
Phaeoceros laevis (L.) Prosk.
|
|
N |
|
Phalaris arundinacea L.
|
Reed Canary Grass, Ribbon Grass |
|
|
Phalaris canariensis L.
|
Annual Canary Grass, Common Canary Grass, Birdseed Grass |
I |
|
Phalaris caroliniana Walt.
|
Carolina Canary Grass, Maygrass |
N |
|
Phanopyrum gymnocarpon (Ell.) Nash
|
Savanna Panic Grass, Clustered Panic Grass |
N |
|
Phaseolus polystachios (L.) BSP
|
Wild Bean, Thicket Bean |
N |
|
Phegopteris hexagonoptera (Michx.) Fee
|
Broad Beech Fern |
N |
|
Phelipanche ramosa L.
|
Branching Broomrape, Hemp Broomrape |
I |
|
Phellodendron amurense Ruprecht
|
Amur Cork-tree, Japanese Cork-tree |
I |
|
Phemeranthus piedmontanus Ware
|
Piedmont Fameflower |
N |
|
Phemeranthus teretifolius (Pursh) Raf.
|
Roundleaf Fameflower, Quill Fameflower, Appalachian Fameflower |
N |
|
Philadelphus coronarius L.
|
Sweet Mock Orange |
I |
|
Philadelphus hirsutus Nutt.
|
Hairy Mock Orange |
N |
|
Philadelphus inodorus L.
|
Scentless Mock Orange |
N |
|
Philadelphus pubescens Loisel.
|
Hoary Mock Orange |
I |
|
Philonotis fontana (Hedw.) Brid. var. fontana
|
Fountain Moss |
N |
|
Philonotis gracillima Ångström
|
|
N |
|
Philonotis longiseta (Michx.) E. Britton
|
|
N |
|
Philonotis marchica (Hedw.) Brid.
|
|
N |
|
Philonotis uncinata (Schwagr.) Bridel
|
|
N |
|
Phleum pratense L.
|
Timothy |
I |
|
Phlox amplifolia Britt.
|
Large-leaf Phlox |
N |
|
Phlox buckleyi Wherry
|
Sword-leaf Phlox |
N |
|
Phlox carolina L.
|
Carolina Phlox, Thick-leaf Phlox |
N |
|
Phlox divaricata L.
|
Wild Blue Phlox, Woodland Phlox |
N |
|
Phlox drummondii Hook.
|
Annual Phlox |
I |
|
Phlox glaberrima L.
|
Smooth Phlox |
N |
|
Phlox maculata L.
|
Meadow Phlox, Wild Sweet-william |
N |
|
Phlox nivalis Lodd. ex Sweet ssp. hentzii (Nutt.) Wherry
|
Trailing Phlox |
N |
|
Phlox ovata L.
|
Mountain Phlox, Appalachian Phlox |
N |
|
Phlox paniculata L.
|
Fall Phlox, Garden Phlox |
N |
|
Phlox pilosa L. ssp. pilosa
|
Downy Phlox |
N |
|
Phlox stolonifera Sims
|
Creeping Phlox |
N |
|
Phlox subulata L.
|
Moss Phlox, Moss-pink |
N |
|
Phoradendron leucarpum (Raf.) Reveal & M.C. Johnston ssp. leucarpum
|
American Mistletoe, Eastern Mistletoe |
N |
|
Photinia serratifolia (Desf.) Kalkm.
|
Taiwanese Photinia |
I |
|
Phragmites americanus (Saltonstall P.M. Peterson, & Soreng) A. Haines
|
American Common Reed |
N |
|
Phragmites australis (Cav.) Trin. ex Steud.
|
Common Reed |
I |
|
Phryma leptostachya L.
|
Lopseed, American Lopseed |
N |
|
Phyla lanceolata (Michx.) Greene
|
Frogfruit, Lance-leaf Frogfruit |
N |
|
Phyla nodiflora (L.) Greene
|
Sawtooth Frogfruit, Turkey-tangle Frogfruit |
N |
|
Phyllanthus caroliniensis Walt. ssp. caroliniensis
|
Carolina Leaf-flower |
N |
|
Phyllostachys aurea Carr. ex A. & C. Riviere
|
Golden Bamboo |
I |
|
Phyllostachys aureosulcata McClure
|
Yellowgroove Bamboo |
I |
|
Phyllostachys bissetii McClure
|
Bisset's Bamboo |
I |
|
Phyllostachys nigra (Lodd. ex Lindl.) Munro
|
Black Bamboo |
I |
|
Physalis angulata L.
|
Cut-leaf Ground-cherry |
N |
|
Physalis grisea (Waterfall) M. Martinez
|
Gray Ground-cherry |
N |
|
Physalis heterophylla Nees
|
Clammy Ground-cherry |
N |
|
Physalis longifolia Nuttall var. subglabrata (Mackenzie & Bush) Cronq.
|
Longleaf Ground-cherry |
N |
|
Physalis philadelphica Lamarck
|
Tomatillo |
I |
|
Physalis pubescens L.
|
Downy Ground-cherry |
N |
|
Physalis virginiana P. Miller
|
Virginia Ground-cherry |
N |
|
Physalis walteri Nutt.
|
Dune Ground-cherry |
N |
|
Physaria gordonii (A. Gray) O'Kane & Al-Shehbaz
|
Gordon's Bladderpod |
I |
|
Physcomitrella patens (Hedw.) Bruch & Schimp.
|
|
N |
|
Physcomitrium collenchymatum Gier
|
|
N |
|
Physcomitrium pyriforme (Hedw.) Hampe
|
|
N |
|
Physocarpus opulifolius (L.) Maxim. var. opulifolius
|
Common Ninebark, Eastern Ninebark |
N |
|
Physostegia leptophylla Small
|
Slender-leaf False Dragonhead |
N |
|
Physostegia virginiana (L.) Benth.
|
Obedient-plant |
N |
|
Phytolacca americana L. var. americana
|
Common Pokeweed |
N |
|
Phytolacca americana L. var. rigida (Small) Caulkins & Wyatt
|
Seaside Pokeweed |
N |
|
Picea abies (L.) H. Karsten
|
Norway Spruce |
I |
|
Picea rubens Sargent
|
Red Spruce |
N |
|
Picris hieracioides L.
|
Hawkweed Ox-tongue, Cat's-ear |
I |
|
Pieris floribunda (Pursh) Benth. & Hook. f.
|
Evergreen Mountain Fetterbush, Mountain Andromeda |
N |
|
Pilea fontana (Lunell) Rydb.
|
Lesser Clearweed, Blackfruit Clearweed |
N |
|
Pilea microphylla (L.) Liebm.
|
Rockweed |
I |
|
Pilea pumila (L.) Gray
|
Clearweed, Greenfruit Clearweed |
N |
|
Pilosella aurantiaca (L.) F. Schultz & Schultz Bip.
|
Orange Hawkweed, Orange King-devil |
I |
|
Pilosella caespitosa (Dum.) P.D. Sell & C. West
|
Meadow Hawkweed, Yellow King-devil |
I |
|
Pilosella floribunda (Wimmer & Grabowski) Arvet-Touvet
|
Glaucous Hawkweed |
I |
|
Pilosella officinarum F. Schultz & Schultz Bip.
|
Mouse-ear Hawkweed |
I |
|
Pilosella piloselloides (Villars) Soják
|
Tall Hawkweed |
I |
|
Pimpinella saxifraga L. ssp. saxifraga
|
Burnet Saxifrage |
I |
|
Pinellia ternata (Thunb.) Makino ex Breitenbach
|
Crow-dipper |
I |
|
Pinus echinata Miller
|
Shortleaf Pine |
N |
|
Pinus palustris Miller
|
Longleaf Pine |
N |
|
Pinus pungens Lambert
|
Table-mountain Pine |
N |
|
Pinus resinosa Aiton
|
Red Pine |
I |
|
Pinus rigida Miller
|
Pitch Pine |
N |
|
Pinus serotina Michaux
|
Pond Pine |
N |
|
Pinus strobus L.
|
Eastern White Pine |
N |
|
Pinus taeda L.
|
Loblolly Pine |
N |
|
Pinus virginiana Miller
|
Virginia Pine, Scrub Pine |
N |
|
Piptochaetium avenaceum (L.) Parodi
|
Eastern Needlegrass |
N |
|
Pistia stratiotes L.
|
Water Lettuce |
I |
|
Pityopsis aspera (Shuttlw. ex Small) Small var. adenolepis (Fern.) Semple & Bowers
|
Pineland Golden-aster |
N |
|
Pityopsis nervosa (Willd.) Dress
|
Grass-leaved Golden-aster |
N |
|
Plagiochasma rupestre (J.R. Forst. & G. Forst.) Steph. var. rupestre
|
|
N |
|
Plagiochila appalachiana Inoue
|
|
N |
|
Plagiochila austinii A. Evans
|
|
N |
|
Plagiochila echinata R.M. Schuster
|
|
N |
|
Plagiochila exigua (Taylor) Taylor
|
|
N |
|
Plagiochila porelloides (Torr. ex Nees) Lindenb.
|
|
N |
|
Plagiochila raddiana Lindenb.
|
|
N |
|
Plagiochila sullivantii Gottsche ex A. Evans
|
|
N |
|
Plagiochila virginica A. Evans
|
|
N |
|
Plagiomnium ciliare (Müll. Hal.) T.J. Kop.
|
|
N |
|
Plagiomnium cuspidatum (Hedw.) T.J. Kop.
|
|
N |
|
Plagiomnium drummondii (Bruch & Schimp.) T.J. Kop.
|
|
N |
|
Plagiomnium ellipticum (Brid.) T.J. Kop.
|
|
N |
|
Plagiomnium medium (Bruch & Schimp.) T.J. Kop.
|
|
N |
|
Plagiomnium rostratum (Schrad.) T.J. Kop.
|
|
N |
|
Plagiopus oederianus (Sw.) H.A. Crum & L.E. Anderson
|
|
N |
|
Plagiothecium cavifolium (Brid.) Z. Iwats.
|
|
N |
|
Plagiothecium denticulatum (Hedw.) Schimp.
|
|
N |
|
Plagiothecium laetum Schimp.
|
|
N |
|
Plagiothecium latebricola Bruch, Schimper, & W. Gümbel
|
Lurking Leskea |
N |
|
Planodes virginicum (L.) E.L. Greene
|
Virginia Winged Rock Cress |
N |
|
Plantago aristata Michxaux
|
Bracted Plantain, Large-bracted Plantain |
I |
|
Plantago cordata Lamarck
|
King-root, Heart-leaved Plantain |
N |
|
Plantago heterophylla Nuttall
|
Slender Plantain |
N |
|
Plantago indica L.
|
Leafy-stemmed Plantain |
I |
|
Plantago lanceolata L.
|
English Plantain, Rib-grass |
I |
|
Plantago major L.
|
Common Plantain |
I |
|
Plantago maritima L. var. juncoides (Lamarck) Gray
|
Seaside Plantain |
N |
|
Plantago patagonica Jacquin
|
Woolly Plantain |
I |
|
Plantago pusilla Nuttall
|
Dwarf Plantain |
I |
|
Plantago rugelii Dcne.
|
American Plantain, Broad-leaved Plantain, Blackseed Plantain |
N |
|
Plantago virginica L.
|
Virginia Plantain, Paleseed Plantain |
N |
|
Plantago wrightiana Dcne.
|
Wright's Plantain |
I |
|
Platanthera blephariglottis (Willd.) Lindl.
|
Small White Fringed Orchid |
N |
|
Platanthera ciliaris (L.) Lindl.
|
Yellow Fringed Orchid |
N |
|
Platanthera clavellata (Michx.) Luer
|
Small Green Wood Orchid |
N |
|
Platanthera cristata (Michx.) Lindl.
|
Crested Fringed Orchid, Golden Fringed Orchid |
N |
|
Platanthera flava (L.) Lindl.
|
Rein Orchid |
N |
|
Platanthera flava (L.) Lindl. var. flava
|
Southern Rein Orchid, Southern Gypsy-spike |
N |
|
Platanthera flava (L.) Lindl. var. herbiola (R.Br. ex Ait.f.) Luer
|
Tubercled Rein Orchid, Northern Gypsy-spike |
N |
|
Platanthera grandiflora (Bigelow) Lindl.
|
Large Purple Fringed Orchid |
N |
|
Platanthera hookeri (Torrey ex Gray) Lindley
|
Hooker's Orchid |
N |
|
Platanthera lacera (Michx.) G. Don
|
Ragged Fringed Orchid, Green Fringed Orchid |
N |
|
Platanthera leucophaea (Nutt.) Lindl.
|
Prairie Fringed Orchid |
N |
|
Platanthera orbiculata (Pursh) Lindl.
|
Large Round-leaved Orchid |
N |
|
Platanthera peramoena (Gray) Gray
|
Purple Fringeless Orchid, Purple Spire Orchid |
N |
|
Platanthera psycodes (L.) Lindl.
|
Small Purple Fringed Orchid |
N |
|
Platanthera shriveri P.M. Brown
|
Shriver's Frilly Orchid |
N |
|
Platanus occidentalis L.
|
Sycamore, American Sycamore |
N |
|
Platydictya confervoides (Brid.) H.A. Crum
|
|
N |
|
Platydictya minutissima (Sull. & Lesq.) H.A. Crum
|
|
N |
|
Platydictya subtilis (Hedw.) H.A. Crum
|
Algal Thread Moss |
N |
|
Platygyrium repens (Brid.) Schimp.
|
|
N |
|
Platylomella lescurii (Sull.) A. L. Andrews
|
Bordered Brook Moss |
N |
|
Pleioblastus fortunei (Van Houtte) Nakai
|
Pygmy Bamboo, Dwarf Fern-leaf Bamboo |
I |
|
Pleopeltis michauxiana (Weath.) Hickey & Sprunt
|
Resurrection Fern, Scaly Polypody |
N |
|
Pleuridium acuminatum Lindb.
|
|
N |
|
Pleuridium subulatum (Hedw.) Rabenh.
|
|
N |
|
Pleuridium sullivantii Austin
|
|
N |
|
Pleurochaete luteola (Besch.) Ther.
|
|
N |
|
Pleurozium schreberi (Willd. ex Brid.) Mitt.
|
Phoenix Feather Moss, Big Red Stem |
N |
|
Pluchea camphorata (L.) DC.
|
Camphorweed, Camphor Pluchea |
N |
|
Pluchea foetida (L.) DC. var. foetida
|
Stinking Camphorweed |
N |
|
Pluchea odorata (L.) Cass.
|
Salt Marsh Fleabane |
N |
|
Poa alsodes Gray
|
Grove Bluegrass |
N |
|
Poa annua L.
|
Annual Bluegrass |
I |
|
Poa arachnifera Torr,
|
Texas Bluegrass |
I |
|
Poa autumnalis Muhl. ex Ell.
|
Autumn Bluegrass |
N |
|
Poa bulbosa L. ssp. vivipara (Koel.) Arcang.
|
Bulbous Bluegrass |
I |
|
Poa chapmaniana Scribn.
|
Chapman's Bluegrass |
N |
|
Poa compressa L.
|
Flat-stemmed Bluegrass |
I |
|
Poa cuspidata Nutt.
|
Early Bluegrass, Short-leaved Bluegrass |
N |
|
Poa iconia Azn. var. iconia
|
|
I |
|
Poa languida Hitchc.
|
Drooping Bluegrass |
N |
|
Poa nemoralis L.
|
Wood Bluegrass |
I |
|
Poa paludigena Fern. & Wieg.
|
Bog Bluegrass |
N |
|
Poa palustris L.
|
Fowl Bluegrass |
N |
|
Poa pratensis L.
|
Kentucky Bluegrass |
I |
|
Poa saltuensis Fern. & Wieg.
|
Weak Bluegrass |
N |
|
Poa sylvestris Gray
|
Woodland Bluegrass |
N |
|
Poa trivialis L. ssp. trivialis
|
Rough Bluegrass |
I |
|
Podophyllum peltatum L.
|
Mayapple |
N |
|
Podostemum ceratophyllum Michx.
|
Horn-leaf Riverweed, Threadfoot |
N |
|
Pogonatum brachyphyllum (Michx.) P. Beauv.
|
|
N |
|
Pogonatum pensilvanicum (Hedw.) P. Beauv.
|
Algal Haircap Moss |
N |
|
Pogonia ophioglossoides (L.) Ker-Gawl.
|
Rose Pogonia |
N |
|
Pohlia annotina (Hedw.) Lindb.
|
|
N |
|
Pohlia camptotrachela (Renauld & Cardot) Broth.
|
|
N |
|
Pohlia cruda (Hedw.) Lindb.
|
|
N |
|
Pohlia elongata Hedwig
|
|
N |
|
Pohlia lescuriana (Sullivant) Ochi
|
|
N |
|
Pohlia longicolla (Hedwig) Lindberg
|
|
N |
|
Pohlia melanodon (Brid.) A.J. Shaw
|
|
N |
|
Pohlia nutans (Hedw.) Lindb.
|
|
N |
|
Pohlia proligera (Kindb.) Lindb. ex Arnell
|
|
N |
|
Pohlia wahlenbergii (F. Weber & D. Mohr) A.L. Andrews
|
|
N |
|
Polanisia dodecandra (L.) A. DC. var. dodecandra
|
Common Clammy-weed |
N |
|
Polanisia dodecandra (L.) A. DC. var. trachysperma (Torrey & A. Gray) Iltis
|
Western Clammy-weed |
I |
|
Polemonium reptans L. var. reptans
|
Spreading Jacob's Ladder, Greek Valerian |
N |
|
Polycarpon tetraphyllum (L.) L.
|
Four-leaf Manyseed |
I |
|
Polygaloides paucifolia (Willd.) J.R. Abbott
|
Gaywings, Fringed Polygala |
N |
|
Polygonatum biflorum (Walt.) Ell.
|
Solomon's-seal |
N |
|
Polygonatum biflorum (Walt.) Ell. var. biflorum
|
Solomon's-seal |
N |
|
Polygonatum biflorum (Walt.) Ell. var. commutatum (J.A. & J.H. Schultes) Morong
|
Large Solomon's-seal, King Solomon's-seal |
N |
|
Polygonatum pubescens (Willd.) Pursh
|
Hairy Solomon's-seal, Downy Solomon's-seal |
N |
|
Polygonella articulata (L.) Meisn.
|
Coastal Jointweed, Sand Jointweed |
N |
|
Polygonella polygama (Vent.) Engelm. & Gray var. polygama
|
October-flower |
N |
|
Polygonum aviculare L.
|
Prostrate Knotweed, Knotgrass |
I |
|
Polygonum erectum L.
|
Erect Knotweed |
N |
|
Polygonum glaucum Nutt.
|
Sea-beach Knotweed |
N |
|
Polygonum ramosissimum Michx.
|
Bushy Knotweed |
N |
|
Polygonum tenue Michx.
|
Slender Knotweed |
N |
|
Polymnia canadensis L.
|
White-flowered Leafcup |
N |
|
Polypodium appalachianum Haufler & Windham
|
Appalachian Rock Polypody, Appalachian Rockcap Fern |
N |
|
Polypodium virginianum L.
|
Common Rock Polypody, Common Rockcap Fern |
N |
|
Polypogon monspeliensis (L.) Desf.
|
Annual Rabbitfoot Grass |
I |
|
Polypremum procumbens L.
|
Juniper-leaf, Rustweed, Polypremum |
N |
|
Polystichum acrostichoides (Michx.) Schott
|
Christmas Fern |
N |
|
Polytrichastrum alpinum (Hedw.) G. L. Sm. var. alpinum
|
Alpine Haircap Moss |
N |
|
Polytrichastrum appalachianum (L. E. Anderson) G. L. Smith
|
Appalachian Haircap Moss |
N |
|
Polytrichastrum formosum (Hedw.) G. L. Sm. var. densifolium (Mitten) Z. Iwatsuki & A. Noguchi
|
|
N |
|
Polytrichastrum ohioense (Renauld & Cardot) G.L. Sm.
|
|
N |
|
Polytrichastrum pallidisetum (Funck) G. L. Sm.
|
Mountain Haircap Moss |
N |
|
Polytrichum commune Hedwig var. commune
|
Common Haircap Moss |
N |
|
Polytrichum commune Hedwig var. perigoniale (Michx.) Hampe
|
|
N |
|
Polytrichum juniperinum Hedwig
|
Juniper Haircap Moss |
N |
|
Polytrichum piliferum Hedwig
|
Bristly Haircap Moss |
N |
|
Polytrichum strictum Bridel
|
Woolly Haircap Moss |
N |
|
Pontederia cordata L. var. cordata
|
Pickerelweed |
N |
|
Ponthieva racemosa (Walt.) C. Mohr
|
Shadow Witch Orchid |
N |
|
Populus alba L.
|
White Poplar, Silver Poplar |
I |
|
Populus balsamifera L.
|
Balsam poplar |
I |
|
Populus deltoides Bartram ex Marshall ssp. deltoides
|
Eastern Cottonwood |
N |
|
Populus grandidentata Michx.
|
Bigtooth Aspen |
N |
|
Populus heterophylla L.
|
Swamp Cottonwood |
N |
|
Populus nigra L.
|
Lombardy Poplar, Black Cottonwood |
I |
|
Populus tremuloides Michx.
|
Quaking Aspen |
N |
|
Populus ×canadensis Moench
|
|
I |
|
Populus ×canescens (Ait.) Sm.
|
Gray Poplar |
I |
|
Populus ×jackii Sargent
|
|
I |
|
Porella pinnata Linnaeus
|
|
N |
|
Porella platyphylla (L.) Pfeiffer
|
|
N |
|
Portulaca amilis Speg.
|
Paraguayan Purslane |
I |
|
Portulaca grandiflora Hook.
|
Rose-moss |
I |
|
Portulaca halimoides L.
|
Silkcotton purslane |
I |
|
Portulaca oleracea L.
|
Common Purslane, Garden Purslane |
I |
|
Portulaca pilosa L.
|
Kiss-me-quick |
I |
|
Portulaca smallii P. Wilson
|
Small's Purslane |
N |
|
Potamogeton amplifolius Tuckerman
|
Bigleaf Pondweed, Large-leaf Pondweed |
N |
|
Potamogeton berchtoldii Fieber
|
Slender Pondweed |
N |
|
Potamogeton bicupulatus Fernald
|
Snailseed Pondweed |
N |
|
Potamogeton crispus L.
|
Curled Pondweed, Curly Pondweed |
I |
|
Potamogeton diversifolius Raf.
|
Waterthread Pondweed, Common Snailseed Pondweed |
N |
|
Potamogeton epihydrus Raf.
|
Ribbonleaf Pondweed |
N |
|
Potamogeton foliosus Raf. var. foliosus
|
Leafy Pondweed |
N |
|
Potamogeton friesii Ruprecht
|
Fries' Pondweed |
N |
|
Potamogeton hillii Morong
|
Hill's Pondweed |
N |
|
Potamogeton illinoensis Morong
|
Illinois pondweed |
N |
|
Potamogeton nodosus L.
|
Longleaf Pondweed, American Pondweed |
N |
|
Potamogeton oakesianus Robbins
|
Oakes' pondweed |
N |
|
Potamogeton perfoliatus L.
|
Clasping-leaf Pondweed, Perfoliate Pondweed |
N |
|
Potamogeton pulcher Tuckerman
|
Spotted Pondweed |
N |
|
Potamogeton pusillus L.
|
Small Pondweed |
N |
|
Potamogeton robbinsii Oakes
|
Flatleaf Pondweed, Fern Pondweed |
N |
|
Potamogeton spirillus Tuckerman
|
Spiral Pondweed, Northern Snailseed Pondweed |
N |
|
Potamogeton strictifolius Bennett
|
Straightleaf Pondweed |
N |
|
Potamogeton tennesseensis Fernald
|
Tennessee Pondweed |
N |
|
Potamogeton zosteriformis Fernald
|
Flatstem Pondweed |
N |
|
Potentilla argentea L.
|
Silvery Cinquefoil |
I |
|
Potentilla canadensis L.
|
Dwarf Cinquefoil, Canada Cinquefoil |
N |
|
Potentilla indica (Andr.) T. Wolf
|
Indian-strawberry |
I |
|
Potentilla intermedia L.
|
Downy Cinquefoil |
I |
|
Potentilla norvegica L.
|
Rough Cinquefoil |
N |
|
Potentilla recta L.
|
Sulphur Cinquefoil, Rough-fruited Cinquefoil |
I |
|
Potentilla reptans L.
|
Creeping Cinquefoil, European Cinquefoil |
I |
|
Potentilla rivalis Nutt.
|
Brook Cinquefoil |
I |
|
Potentilla simplex Michx.
|
Common Cinquefoil |
N |
|
Poterium sanguisorba L. var. polygamum (Waldstein & Kitaibel) Visiani
|
Salad Burnet, Garden Burnet |
I |
|
Pourthiaea villosa (Thunb.) Decaisne
|
Smooth Oriental Photinia |
I |
|
Primula meadia (L.) A. R. Mast & Reveal
|
Eastern Shooting Star |
N |
|
Proboscidea louisianica (P. Miller) Thellung
|
Unicorn-plant, Devil's-claw |
I |
|
Prosartes lanuginosa (Michx.) D. Don
|
Yellow Mandarin, Yellow Fairybells |
N |
|
Prosartes maculata (Buckl.) Gray
|
Spotted Mandarin, Nodding Mandarin |
N |
|
Proserpinaca palustris L.
|
Common Mermaid-weed |
N |
|
Proserpinaca pectinata Lam.
|
Comb-leaf Mermaid-weed |
N |
|
Prunella laciniata (L.) L.
|
Cutleaf Self-heal |
I |
|
Prunella vulgaris L.
|
Self-heal, Heal-all |
N |
|
Prunus alleghaniensis Porter var. alleghaniensis
|
Allegheny Plum, Allegheny Sloe |
N |
|
Prunus americana Marshall
|
American Wild Plum |
N |
|
Prunus angustifolia Marshall
|
Chickasaw Plum |
N |
|
Prunus avium (L.) L.
|
Sweet Cherry, Bird Cherry |
I |
|
Prunus caroliniana (P. Miller) Aiton
|
Carolina Laurel Cherry |
I |
|
Prunus cerasifera Ehrh.
|
Cherry Plum |
I |
|
Prunus cerasus L.
|
Sour Cherry |
I |
|
Prunus domestica L. var. insititia (L.) Fiori & Paoletti
|
Damson Plum |
I |
|
Prunus hortulana Bailey
|
Hortulan plum |
I |
|
Prunus mahaleb L.
|
Mahaleb Cherry, Rock Cherry, Perfumed Cherry |
I |
|
Prunus maritima Marshall
|
Beach Plum |
|
|
Prunus munsoniana W. Wight & Hedrick
|
Wild Goose Plum |
I |
|
Prunus nigra Aiton
|
Canada Plum |
N |
|
Prunus pensylvanica L.f.
|
Pin Cherry, Fire Cherry |
N |
|
Prunus persica (L.) Batsch
|
Peach |
I |
|
Prunus serotina Ehrhart ssp. serotina
|
Black Cherry, Wild Black Cherry |
N |
|
Prunus subhirtella Miq.
|
Spring Cherry, Higan Cherry, Winter-flowering Cherry |
I |
|
Prunus susquehanae Hort. ex Willd.
|
Susquehanna Sand Cherry |
N |
|
Prunus virginiana L. var. virginiana
|
Choke Cherry |
N |
|
Pseudobryum cinclidioides (Huebener) T.J. Kop.
|
|
N |
|
Pseudocampylium radicale (P. Beauv.) Vanderpoorten & Hedenäs
|
|
N |
|
Pseudognaphalium helleri (Britt.) A. Anderb.
|
Heller's Cudweed, Heller's Rabbit Tobacco |
N |
|
Pseudognaphalium macounii (Greene) Kartesz
|
Clammy Everlasting, Winged Cudweed |
N |
|
Pseudognaphalium micradenium (Weatherby) Nesom
|
Small Rabbit Tobacco, Delicate Rabbit Tobacco |
N |
|
Pseudognaphalium obtusifolium (L.) Hilliard & Burtt
|
Sweet Everlasting, Catfoot, Rabbit Tobacco |
N |
|
Pseudognaphalium stramineum (Kunth) W.A. Weber
|
Cotton-batting Plant |
I |
|
Pseudolycopodiella caroliniana (L.) Holub
|
Carolina Bog Clubmoss, Slender Clubmoss |
N |
|
Pseudosasa japonica (Sieb. & Zucc. ex Steud.) Makino ex Nakai
|
Arrow Bamboo |
I |
|
Pseudotaxiphyllum distichaceum (Mitt.) Z. Iwats.
|
|
N |
|
Pseudotaxiphyllum elegans (Brid.) Z. Iwats.
|
|
N |
|
Ptelea trifoliata L. var. mollis Torr. & Gray
|
Hairy Hop-tree |
N |
|
Ptelea trifoliata L. var. trifoliata
|
Hop-tree, Wafer-ash |
N |
|
Pteridium aquilinum (L.) Kuhn
|
Bracken Fern |
N |
|
Pteridium aquilinum (L.) Kuhn ssp. latiusculum (Desv.) Hulten
|
Eastern Bracken Fern |
N |
|
Pteridium aquilinum (L.) Kuhn ssp. pseudocaudatum (Clute) Hulten
|
Southern Bracken Fern |
N |
|
Pterigynandrum filiforme Hedwig
|
|
N |
|
Pteris multifida Poir.
|
Spider Fern |
I |
|
Ptilidium pulcherrimum (Weber) Vain.
|
|
N |
|
Ptilimnium capillaceum (Michx.) Raf.
|
Mock Bishop's-weed |
N |
|
Ptilium crista-castrensis (Hedw.) De Not.
|
Knight's Plume Moss |
N |
|
Ptychomitrium drummondii (Wilson) Sull.
|
|
N |
|
Ptychomitrium incurvum (Schwägr.) Spruce
|
|
N |
|
Ptychostomum creberrimum (Taylor) J.R. Spence & H.P. Ramsay
|
Scarlet Stalk Moss |
N |
|
Ptychostomum intermedium (Brid.) J.R. Spence
|
|
N |
|
Ptychostomum pallescens (Schleicher ex Schwägr.) J.R. Spence
|
|
N |
|
Ptychostomum pseudotriquetrum (Hedw.) J.R. Spence & H.P. Ramsay ex Holyoak & N. Pedersen
|
|
N |
|
Ptychostomum weigelii (Sprengel) J.R. Spence
|
|
N |
|
Puccinellia distans (Jacq.) Parl.
|
European Alkali Grass |
I |
|
Puccinellia fasciculata (Torr.) Bickn.
|
Eastern Alkali Grass, Saltmarsh Goosegrass |
|
|
Pueraria montana (Loureiro) Merritt var. lobata (Willd.) Maesen & S. Almeida
|
Kudzu |
I |
|
Pycnanthemum beadlei (Small) Fern.
|
Beadle's Mountain-mint |
N |
|
Pycnanthemum clinopodioides Torr. & Gray
|
Basil Mountain-mint |
N |
|
Pycnanthemum curvipes (Greene) Grant & Epling
|
Tennessee Mountain-mint |
N |
|
Pycnanthemum flexuosum (Walt.) B.S.P.
|
Savanna Mountain-mint, Hyssop-leaf Mountain-mint |
N |
|
Pycnanthemum incanum (L.) Michx. var. incanum
|
Hoary Mountain-mint |
N |
|
Pycnanthemum incanum complex
|
Hoary Mountain-mint |
N |
|
Pycnanthemum loomisii Nutt.
|
Loomis' Mountain-mint |
N |
|
Pycnanthemum monotrichum Fern.
|
One-hair Mountain-mint |
N |
|
Pycnanthemum muticum (Michx.) Pers.
|
Short-toothed Mountain-mint, Clustered Mountain-mint |
N |
|
Pycnanthemum pycnanthemoides (Leavenworth) Fern.
|
Southern Mountain-mint |
N |
|
Pycnanthemum setosum Nutt.
|
Awned Mountain-mint |
N |
|
Pycnanthemum tenuifolium Schrad.
|
Narrow-leaf Mountain-mint, Slender Mountain-mint |
N |
|
Pycnanthemum torreyi Benth.
|
Torrey's Mountain-mint |
N |
|
Pycnanthemum verticillatum (Michx.) Pers.
|
Whorled Mountain-mint |
N |
|
Pycnanthemum virginianum (L.) T. Dur. & B.D. Jackson ex B.L. Robins. & Fern.
|
Virginia Mountain-mint |
N |
|
Pylaisia condensata (Mitt.) A. Jaeger
|
Paintbrush Moss |
N |
|
Pylaisia intricata (Hedw.) Schimp.
|
|
N |
|
Pylaisia polyantha (Hedw.) Schimp.
|
|
N |
|
Pylaisiadelpha tenuirostris (Bruch & Schimp. ex Sull.) W.R. Buck
|
|
N |
|
Pyracantha coccinea M. Roemer
|
Scarlet Firethorn |
I |
|
Pyrola americana Sweet
|
Round-leaved Pyrola, American Wintergreen |
N |
|
Pyrola chlorantha Sw.
|
Green Pyrola, Green-flowered Wintergreen |
N |
|
Pyrola elliptica Nutt.
|
Shinleaf, Wax-flower Shinleaf |
N |
|
Pyrrhopappus carolinianus (Walt.) DC.
|
Carolina False Dandelion |
N |
|
Pyrularia pubera Michx.
|
Buffalo-nut, Oil-nut |
N |
|
Pyrus calleryana Dcne.
|
Callery Pear |
I |
|
Pyrus communis L.
|
Common Pear |
I |
|
Pyrus elaeagnifolia Pallas?
|
Oleaster-leaved Pear |
I |
|
Pyrus pyrifolia (Burm. f.) Nakai
|
Chinese Pear, Asian Pear |
I |
|
Pyxidanthera barbulata Michx. var. barbulata
|
Common Pyxie-moss, Flowering Pyxie-moss, Big Pyxie |
N |