List of Canadian plants by family PQ

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Main page: List of Canadian plants by family

Revisions and sourced additions are welcome.

Families: A | B | C | D | E | F | G | H | I J K | L | M | N | O | P Q | R | S | T | U V W | X Y Z

Contents

[edit] Paeoniaceae

[edit] Pallaviciniaceae

  • Moerckia blyttii
  • Moerckia hibernica
  • Pallavicinia lyellii — pallavicinia

[edit] Papaveraceae

  • Meconella oregana — white meconella
  • Papaver alboroseum — pale poppy
  • Papaver alpinum — dwarf poppy
  • Papaver dahlianum — polar poppy
  • Papaver gorodkovii — Russian poppy
  • Papaver lapponicum — Lapland poppy
  • Papaver macounii — Macoun's poppy

[edit] Pelliaceae

  • Pellia endiviifolia
  • Pellia epiphylla — common pellia
  • Pellia neesiana

[edit] Phytolaccaceae

[edit] Pinaceae

[edit] Plagiochilaceae

  • Pedinophyllum interruptum
  • Plagiochila arctica
  • Plagiochila asplenioides
  • Plagiochila austinii
  • Plagiochila porelloides
  • Plagiochila satoi
  • Plagiochila schoefieldiana
  • Plagiochila semidecurrens

[edit] Plagiotheciaceae

  • Plagiothecium berggrenianum
  • Plagiothecium cavifolium
  • Plagiothecium denticulatum
  • Plagiothecium laetum
  • Plagiothecium latebricola — lurking leskea
  • Plagiothecium piliferum
  • Plagiothecium undulatum

[edit] Plantaginaceae

  • Littorella uniflora — American shoregrass
  • Plantago bigelovii — Bigelow's plantain
  • Plantago canescens — hairy plantain
  • Plantago cordata — heartleaf plantain
  • Plantago elongata — slender plantain
  • Plantago eriopoda — saline plantain
  • Plantago macrocarpa — Alaska plantain
  • Plantago maritima — seaside plantain
  • Plantago patagonica — woolly plantain
  • Plantago rugelii — blackseed plantain
  • Plantago tweedyi — Tweedy's plantain

[edit] Pleuroziaceae

  • Pleurozia purpurea

[edit] Pleuroziopsidaceae

  • Pleuroziopsis ruthenica

[edit] Plumbaginaceae

  • Limonium carolinianum — sea-lavender

[edit] Poaceae

  • Achnatherum hymenoides — Indian mountain-ricegrass
  • Achnatherum lemmonii — Lemmon's needlegrass
  • Achnatherum nelsonii — Nelson's needlegrass
  • Achnatherum occidentale — western needlegrass
  • Achnatherum richardsonii — Canada mountain-ricegrass
  • Agrostis aequivalvis — northern bentgrass
  • Agrostis alascana — Alaska bentgrass
  • Agrostis clavata — clubbed bentgrass
  • Agrostis diegoensis — leafy bentgrass
  • Agrostis exarata — spike bentgrass
  • Agrostis geminata — hairgrass
  • Agrostis humilis — mountain bentgrass
  • Agrostis hyemalis — winter bentgrass
  • Agrostis idahoensis — Idaho bentgrass
  • Agrostis mertensii — Arctic bentgrass
  • Agrostis microphylla — small-leaf bentgrass
  • Agrostis oregonensis — Oregon bentgrass
  • Agrostis pallens — seashore bentgrass
  • Agrostis perennans — perennial bentgrass
  • Agrostis scabra — rough bentgrass
  • Agrostis stolonifera — creeping bentgrass
  • Agrostis thurberiana — Thurber's bentgrass
  • Agrostis variabilis — variable bentgrass
  • Alopecurus aequalis — shortawn foxtail
  • Alopecurus alpinus — mountain foxtail
  • Alopecurus carolinianus — tufted foxtail
  • Ammophila breviligulata — American beachgrass
  • Andropogon gerardii — big bluestem
  • Andropogon hallii — sand bluestem
  • Andropogon virginicus — common broom-sedge
  • Arctagrostis latifolia — broadleaf arctagrostis
  • Arctophila fulva — pendant-grass
  • Aristida basiramea — forked three-awn grass
  • Aristida dichotoma — Shinner's three-awn grass
  • Aristida longespica — slimspike three-awn grass
  • Aristida purpurascens — purple needlegrass
  • Aristida purpurea — purple three-awn grass
  • Beckmannia syzigachne — American sloughgrass
  • Bouteloua curtipendula — side-oats gramma
  • Bouteloua gracilis — blue gramma
  • Bouteloua hirsuta — hairy gramma
  • Brachyelytrum erectum — bearded shorthusk
  • Brachyelytrum septentrionale — northern shorthusk
  • Bromus anomalus — nodding brome
  • Bromus carinatus — California brome
  • Bromus ciliatus — fringed brome
  • Bromus inermis — awnless brome
  • Bromus kalmii — wild chess
  • Bromus latiglumis — broad-glumed brome
  • Bromus nottowayanus — Nottoway brome
  • Bromus pacificus — Pacific brome
  • Bromus porteri — Porter's chess
  • Bromus pubescens — hairy wood brome
  • Bromus sitchensis — Alaska brome
  • Bromus vulgaris — narrow-flowered brome
  • Buchloe dactyloides — buffalo grass
  • Calamagrostis canadensis — bluejoint reedgrass
  • Calamagrostis coarctata — Nuttall's reedgrass
  • Calamagrostis deschampsioides — circumpolar small-reedgrass
  • Calamagrostis holmii — Holm's small-reedgrass
  • Calamagrostis lapponica — Lapland reedgrass
  • Calamagrostis montanensis — plains reedgrass
  • Calamagrostis nutkaensis — Pacific small-reedgrass
  • Calamagrostis pickeringii — Pickering's reed bentgrass
  • Calamagrostis purpurascens — purple reedgrass
  • Calamagrostis rubescens — pine reedgrass
  • Calamagrostis sesquiflora — one-and-a-half-flower small-reedgrass
  • Calamagrostis stricta — slimstem small-reedgrass
  • Calamovilfa longifolia — sand reedgrass
  • Catabrosa aquatica — brook grass
  • Cenchrus longispinus — longspine sandbur
  • Chasmanthium latifolium — Indian sea-oats
  • Cinna arundinacea — stout wood reedgrass
  • Cinna latifolia — slender wood reedgrass
  • Coleanthus subtilis — moss grass
  • Danthonia californica — California oatgrass
  • Danthonia compressa — flattened oatgrass
  • Danthonia intermedia — Vasey's oatgrass
  • Danthonia parryi — Parry's oatgrass
  • Danthonia spicata — poverty oatgrass
  • Danthonia unispicata — few-flowered oatgrass
  • Deschampsia alpina — alpine hairgrass
  • Deschampsia beringensis — Bering hairgrass
  • Deschampsia brevifolia — shortleaf hairgrass
  • Deschampsia caespitosa — tufted hairgrass
  • Deschampsia danthonioides — annual hairgrass
  • Deschampsia elongata — slender hairgrass
  • Deschampsia flexuosa — wavy hairgrass
  • Deschampsia holciformis — Pacific hairgrass
  • Deschampsia mackenzieana — MacKenzie's hairgrass
  • Diarrhena americana — American beakgrain
  • Diarrhena obovata — beak grass
  • Dichanthelium acuminatum — tapered rosette grass
  • Dichanthelium boreale — northern witchgrass
  • Dichanthelium boscii — Bosc's witchgrass
  • Dichanthelium clandestinum — deer-tongue witchgrass
  • Dichanthelium depauperatum — starved witchgrass
  • Dichanthelium dichotomum — cypress witchgrass
  • Dichanthelium latifolium — broadleaf witchgrass
  • Dichanthelium leibergii — Leiberg's rosette grass
  • Dichanthelium leucothrix — roughish witchgrass
  • Dichanthelium linearifolium — slimleaf witchgrass
  • Dichanthelium longiligulatum — coastal plain witchgrass
  • Dichanthelium meridionale — matting witchgrass
  • Dichanthelium oligosanthes — Heller's witchgrass
  • Dichanthelium ovale — egg-leaf witchgrass
  • Dichanthelium sabulorum — hemlock witchgrass
  • Dichanthelium scabriusculum — woolly witchgrass
  • Dichanthelium sphaerocarpon — roundfruit panicgrass
  • Dichanthelium spretum — Eaton's witchgrass
  • Dichanthelium villosissimum — whitehair witchgrass
  • Dichanthelium wilcoxianum — Wilcox' panicgrass
  • Dichanthelium xanthophysum — slender dichanthelium
  • Digitaria cognata — mountain hairgrass
  • Distichlis spicata — seashore saltgrass
  • Dupontia fisheri — Fisher's dupontia
  • Echinochloa muricata — rough barnyard grass
  • Echinochloa walteri — Walter's barnyard grass
  • Elymus alaskanus — Alaska wild rye
  • Elymus albicans — Montana wild rye
  • Elymus calderi — Calder's wild rye
  • Elymus canadensis — nodding wild rye
  • Elymus diversiglumis — interrupted wild rye
  • Elymus elymoides — bottlebrush squirrel-tail
  • Elymus glaucus — smooth wild rye
  • Elymus hirsutus — boreal wild rye
  • Elymus hystrix — bottlebrush grass
  • Elymus lanceolatus — streamside wild rye
  • Elymus macrourus — thickspike wild rye
  • Elymus riparius — river wild rye
  • Elymus scribneri — Scribner's wild rye
  • Elymus sibiricus — Siberian wild rye
  • Elymus submuticus — wild rye
  • Elymus trachycaulus — slender wild rye
  • Elymus villosus — hairy wild rye
  • Elymus virginicus — Virginia wild rye
  • Elymus vulpinus — Rydberg's wild rye
  • Elymus wiegandii — Wiegand's wild rye
  • Elymus x dorei — Dore's wild rye
  • Elymus x ebingeri — Ebinger's wild rye
  • Elymus x hansenii — Hansen's wild rye
  • Elymus x maltei — Malte's wild rye
  • Elymus x mossii — Moss' wild rye
  • Elymus x palmerensis — Palmer's wild rye
  • Elymus x pseudorepens — quackgrass
  • Eragrostis capillaris — tiny lovegrass
  • Eragrostis frankii — Frank's lovegrass
  • Eragrostis hypnoides — teal lovegrass
  • Eragrostis pectinacea — purple lovegrass
  • Eragrostis spectabilis — purple lovegrass
  • Festuca altaica — rough fescue
  • Festuca baffinensis — Baffin fescue
  • Festuca brachyphylla — shortleaf fescue
  • Festuca brevissima — Alaska fescue
  • Festuca campestris — blue rough fescue
  • Festuca edlundiae — Arctic festuca
  • Festuca frederikseniae — North Atlantic fescue
  • Festuca hallii — Hall's rough fescue
  • Festuca heteromalla — spreading fescue
  • Festuca hyperborea — boreal fescue
  • Festuca idahoensis — Idaho fescue
  • Festuca lenensis — tundra fescue
  • Festuca minutiflora — smallflower fescue
  • Festuca occidentalis — western fescue
  • Festuca richardsonii — Richardson's fescue
  • Festuca rubra — red fescue
  • Festuca saximontana — Rocky Mountain fescue
  • Festuca subulata — nodding fescue
  • Festuca subuliflora — crinkle-awn fescue
  • Festuca subverticillata — nodding fescue
  • Festuca viridula — mountain fescue
  • Festuca viviparoidea — northern fescue
  • Glyceria borealis — small floating mannagrass
  • Glyceria canadensis — Canada mannagrass
  • Glyceria elata — tall mannagrass
  • Glyceria grandis — American mannagrass
  • Glyceria laxa — northern mannagrass
  • Glyceria leptostachya — slimhead mannagrass
  • Glyceria melicaria — slender mannagrass
  • Glyceria obtusa — blunt mannagrass
  • Glyceria occidentalis — northwestern mannagrass
  • Glyceria pulchella — MacKenzie Valley mannagrass
  • Glyceria septentrionalis — floating mannagrass
  • Glyceria striata — fowl mannagrass
  • Glyceria x gatineauensis — Gatineau mannagrass
  • Helictotrichon hookeri — spike-oat
  • Hesperostipa comata — needle-and-thread
  • Hesperostipa curtiseta — western porcupine grass
  • Hesperostipa spartea — porcupine needlegrass
  • Hierochloe alpina — alpine sweet grass
  • Hierochloe hirta — northern sweet grass
  • Hierochloe odorata — vanilla grass
  • Hierochloe pauciflora — Arctic sweet grass
  • Hordeum brachyantherum — meadow barley
  • Hordeum jubatum — foxtail barley
  • Hordeum pusillum — little barley
  • Koeleria asiatica — Oriental junegrass
  • Koeleria macrantha — prairie junegrass
  • Leersia oryzoides — rice cutgrass
  • Leersia virginica — Virginia cutgrass
  • Leymus cinereus — Great Basin lyme grass
  • Leymus innovatus — northwestern wildrye
  • Leymus mollis — sea lyme grass
  • Leymus triticoides — beardless lyme grass
  • Leymus x vancouverensis — Vancouver Island lyme grass
  • Melica bulbosa — western melicgrass
  • Melica fugax — small melicgrass
  • Melica harfordii — Harford's melicgrass
  • Melica hitchcockii — Alberta melicgrass
  • Melica smithii — Smith's melicgrass
  • Melica spectabilis — showy melicgrass
  • Melica subulata — Alaska onion grass
  • Milium effusum — tall millet grass
  • Monroa squarrosa — munro grass
  • Muhlenbergia andina — foxtail muhly
  • Muhlenbergia asperifolia — alkali muhly
  • Muhlenbergia cuspidata — plains mühlenbergia
  • Muhlenbergia filiformis — Pullup muhly
  • Muhlenbergia frondosa — wirestem muhly
  • Muhlenbergia glomerata — marsh muhly
  • Muhlenbergia mexicana — Mexican muhly
  • Muhlenbergia racemosa — green muhly
  • Muhlenbergia richardsonis — softleaf muhly
  • Muhlenbergia schreberi — Schreiber's muhly
  • Muhlenbergia sobolifera — cliff muhly
  • Muhlenbergia sylvatica — woodland muhly
  • Muhlenbergia tenuiflora — slender muhly
  • Muhlenbergia uniflora — fall dropseed muhly
  • Nassella viridula — green needlegrass
  • Oryzopsis asperifolia — white-grained mountain-ricegrass
  • Panicum capillare — old witch panicgrass
  • Panicum dichotomiflorum — spreading panicgrass
  • Panicum flexile — wiry witch grass
  • Panicum gattingeri — Gattinger's panicgrass
  • Panicum philadelphicum — Philadelphia panicgrass
  • Panicum rigidulum — redtop panicgrass
  • Panicum virgatum — old switch panicgrass
  • Pascopyrum smithii — western wheatgrass
  • Paspalum setaceum — slender paspalum
  • Phalaris arundinacea — reed canarygrass
  • Phippsia algida — ice grass
  • Phippsia concinna — snow grass
  • Phleum alpinum — mountain timothy
  • Phragmites australis — common reed
  • Piptatherum canadense — Canada mountain ricegrass
  • Piptatherum exiguum — little ricegrass
  • Piptatherum micranthum — little mountain-ricegrass
  • Piptatherum pungens — slender mountain-ricegrass
  • Piptatherum racemosum — blackfruit mountain-ricegrass
  • Piptochaetium avenaceum — blackseed needlegrass
  • Pleuropogon refractus — nodding false semaphore grass
  • Pleuropogon sabinei — sabine-grass
  • Poa abbreviata — northern bluegrass
  • Poa alpina — alpine bluegrass
  • Poa alsodes — grove meadow grass
  • Poa arctica — Arctic bluegrass
  • Poa arida — prairie bluegrass
  • Poa confinis — dune bluegrass
  • Poa cusickii — Cusick's bluegrass
  • Poa eminens — largeflower bluegrass
  • Poa fendleriana — muttongrass
  • Poa flexuosa — flexible bluegrass
  • Poa gaspensis — Gaspé Peninsula bluegrass
  • Poa glauca — white bluegrass
  • Poa hartzii — Hartz' bluegrass
  • Poa howellii — Howell's bluegrass
  • Poa interior — inland bluegrass
  • Poa laxa — Mt. Washington bluegrass
  • Poa laxiflora — loose-flowered bluegrass
  • Poa leibergii — Leiberg's bluegrass
  • Poa leptocoma — bog bluegrass
  • Poa lettermanii — Letterman's bluegrass
  • Poa macrantha — sand-dune bluegrass
  • Poa marcida — weak bluegrass
  • Poa nemoralis — woods bluegrass
  • Poa nervosa — Hooker's bluegrass
  • Poa palustris — fowl bluegrass
  • Poa porsildii — Porsild's bluegrass
  • Poa pratensis — Kentucky bluegrass
  • Poa pseudoabbreviata — polar bluegrass
  • Poa reflexa — nodding bluegrass
  • Poa saltuensis — drooping bluegrass
  • Poa secunda — curly bluegrass
  • Poa stenantha — narrowflower bluegrass
  • Poa suksdorfii — western bluegrass
  • Poa sylvestris — woodland bluegrass
  • Poa tolmatchewii — Tolmatchew's bluegrass
  • Poa wheeleri Wheeler's bluegrass
  • Poa x limosa — Lassen County bluegrass
  • Pseudoroegneria spicataBluebunch wheatgrass
  • Puccinellia agrostidea — tundra alkali grass
  • Puccinellia ambigua — Alberton alkali grass
  • Puccinellia americana — American alkali grass
  • Puccinellia andersonii — Anderson's alkali grass
  • Puccinellia angustata — northern alkali grass
  • Puccinellia arctica — Arctic alkali grass
  • Puccinellia bruggemannii — Prince Patrick alkali grass
  • Puccinellia deschampsioides — polar alkali grass
  • Puccinellia distans — spreading alkali grass
  • Puccinellia fasciculata — saltmarsh goosegrass
  • Puccinellia grandis — Pacific alkali grass
  • Puccinellia interior — inland alkali grass
  • Puccinellia kurilensis — dwarf alkali grass
  • Puccinellia laurentiana — Tracadigash Mountain alkali grass
  • Puccinellia lemmonii — Lemmon's alkali grass
  • Puccinellia lucida — shining alkali grass
  • Puccinellia macra — Bonaventure Island alkali grass
  • Puccinellia nutkaensis — Alaska alkali grass
  • Puccinellia nuttalliana — Nuttall's alkali grass
  • Puccinellia phryganodes — creeping alkali grass
  • Puccinellia poacea — floodplain alkali grass
  • Puccinellia tenella — tundra alkali grass
  • Puccinellia vaginata — Arctic tussock alkali grass
  • Puccinellia vahliana — Vahl's alkali grass
  • Schedonnardus paniculatus — tumble grass
  • Schizachne purpurascens — purple oat
  • Schizachyrium scoparium — little bluestem
  • Scolochloa festucacea — sprangletop
  • Sorghastrum nutans — yellow Indiangrass
  • Spartina alterniflora — saltwater cordgrass
  • Spartina gracilis — alkali cordgrass
  • Spartina patens — saltmeadow cordgrass
  • Spartina pectinata — freshwater cordgrass
  • Spartina x caespitosa — marsh cordgrass
  • Sphenopholis intermedia — slender wedgescale
  • Sphenopholis nitida — shiny wedgegrass
  • Sphenopholis obtusata — prairie wedgegrass
  • Sporobolus airoides — alkali sacaton
  • Sporobolus compositus — tall dropseed
  • Sporobolus cryptandrus — sand dropseed
  • Sporobolus heterolepis — northern dropseed
  • Sporobolus neglectus — small dropseed
  • Sporobolus vaginiflorus — sheathed dropseed
  • Torreyochloa pallida — pale manna grass
  • Triplasis purpurea — purple sandgrass
  • Trisetum canescens — nodding trisetum
  • Trisetum melicoides — purple false oats
  • Trisetum montanum — mountain oats
  • Trisetum sibiricum — Siberian false oats
  • Trisetum spicatum — narrow false oats
  • Trisetum wolfii — beardless oats
  • Vahlodea atropurpurea — mountain hairgrass
  • Vulpia microstachys — small six-weeks grass
  • Vulpia octoflora — slender eight-flowered fescue
  • Zizania aquatica — eastern wild rice
  • Zizania palustris — northern wild rice
  • x Agroelymus bowdenii
  • x Dupoa labradorica
  • x Elyhordeum chatangensis
  • x Elyhordeum macounii
  • x Elyhordeum montanense
  • x Elyhordeum schaackianum
  • x Elyleymus colvillensis
  • x Elyleymus hirtiflorus
  • x Elyleymus jamesensis
  • x Elyleymus turneri
  • x Elyleymus uclueletensis
  • x Elyleymus ungavensis
  • x Pucciphippsia vacillans

[edit] Podostemaceae

  • Podostemum ceratophyllum — threadfoot

[edit] Polemoniaceae

  • Collomia grandiflora — largeflower collomia
  • Collomia heterophylla — varied-leaved collomia
  • Collomia linearis — narrow-leaved collomia
  • Collomia tenella — diffuse collomia
  • Gilia sinuata — rosy gilia
  • Gilia tenerrima — delicate gilia
  • Ipomopsis aggregata — scarlet skyrocket
  • Ipomopsis minutiflora — smallflower standing-cypress
  • Leptodactylon pungens — granite prickly-phlox
  • Linanthus bicolor — bicoloured desert-gold
  • Linanthus harknessii — harkness linanthus
  • Linanthus septentrionalis — northern desert-gold
  • Navarretia divaricata — mountain navarretia
  • Navarretia intertexta — needleleaf navarretia
  • Navarretia leucocephala — whiteflower navarretia
  • Navarretia squarrosa — skunkweed
  • Phlox alyssifolia — alyssum-leaf phlox
  • Phlox caespitosa — carpet phlox
  • Phlox diffusa — spreading phlox
  • Phlox divaricata — wild blue phlox
  • Phlox gracilis — slender phlox
  • Phlox hoodii — Hood's phlox
  • Phlox longifolia — longleaf phlox
  • Phlox maculata — northern meadow phlox
  • Phlox richardsonii — Richardson's phlox
  • Phlox sibirica — Siberian phlox
  • Phlox speciosa — showy phlox
  • Polemonium acutiflorum — tall Jacob's-ladder
  • Polemonium boreale — northern Jacob's-ladder
  • Polemonium californicum — California polemonium
  • Polemonium elegans — elegant polemonium
  • Polemonium micranthum — annual polemonium
  • Polemonium occidentale — western Jacob's-ladder
  • Polemonium pulcherrimum — showy Jacob's-ladder
  • Polemonium vanbruntiae — bog Jacob's-ladder
  • Polemonium viscosum — skunk polemonium

[edit] Polygalaceae

  • Polygala alba — white milkwort
  • Polygala incarnata — pink milkwort
  • Polygala paucifolia — gaywing milkwort
  • Polygala polygama — racemed milkwort
  • Polygala sanguinea — field milkwort
  • Polygala senega — Seneca snakeroot
  • Polygala verticillata — whorled milkwort

[edit] Polygonaceae

  • Eriogonum androsaceum — rock-jasmine wild buckwheat
  • Eriogonum cernuum — nodding wild buckwheat
  • Eriogonum flavum — yellow wild buckwheat
  • Eriogonum heracleoides — parsnip-flower wild buckwheat
  • Eriogonum niveum — snow wild buckwheat
  • Eriogonum ovalifolium — oval-leaf buckwheat
  • Eriogonum pauciflorum — smallflower wild buckwheat
  • Eriogonum pyrolifolium — pyrola-leaved wild buckwheat
  • Eriogonum strictum — blue mountain wild buckwheat
  • Eriogonum umbellatum — sulphur-flower wild buckwheat
  • Koenigia islandica — island kœnigia
  • Oxyria digyna — mountain-sorrel
  • Polygonella articulata — eastern jointweed
  • Polygonum achoreum — leathery knotweed
  • Polygonum alpinum — alpine smartweed
  • Polygonum amphibium — water smartweed
  • Polygonum arifolium — halberd-leaf tearthumb
  • Polygonum bellardii — narrowleaf knotweed
  • Polygonum bistorta — meadow bistort
  • Polygonum bistortoides — American bistort
  • Polygonum boreale — northern knotweed
  • Polygonum buxiforme — Small's knotweed
  • Polygonum careyi — Carey's smartweed
  • Polygonum caurianum — Alaska knotweed
  • Polygonum cilinode — fringed black-bindweed
  • Polygonum douglasii — Douglas' knotweed
  • Polygonum erectum — erect knotweed
  • Polygonum fowleri — Fowler's knotweed
  • Polygonum franktonii — Nova Scotia knotweed
  • Polygonum hudsonianum — Hudson Bay knotweed
  • Polygonum hydropiper — marshpepper smartweed
  • Polygonum hydropiperoides — mild water-pepper
  • Polygonum lapathifolium — dockleaf smartweed
  • Polygonum minimum — leafy dwarf knotweed
  • Polygonum oxyspermum — sharpfruit knotweed
  • Polygonum paronychia — beach knotweed
  • Polygonum pensylvanicum — Pennsylvania smartweed
  • Polygonum polygaloides — white-margin knotweed
  • Polygonum punctatum — dotted smartweed
  • Polygonum raii — Ray's knotweed
  • Polygonum ramosissimum — bushy knotweed
  • Polygonum robustius — stout smartweed
  • Polygonum sagittatum — arrowleaf tearthumb
  • Polygonum scandens — climbing false buckwheat
  • Polygonum tenue — slender knotweed
  • Polygonum virginianum — Virginia knotweed
  • Polygonum viviparum — viviparous knotweed
  • Rumex acetosa — garden sorrel
  • Rumex altissimus — tall dock
  • Rumex aquaticus — western dock
  • Rumex arcticus — Arctic dock
  • Rumex beringensis — Bering Sea dock
  • Rumex maritimus — seaside dock
  • Rumex occidentalis
  • Rumex orbiculatus — water dock
  • Rumex pallidus — seabeach dock
  • Rumex paucifolius — alpine sheep sorrel
  • Rumex salicifolius — willow dock
  • Rumex venosus — veined dock
  • Rumex verticillatus — swamp dock
  • Rumex x alexidis
  • Rumex x franktonis — Frankton's dock

[edit] Polypodiaceae

  • Polypodium amorphum — irregular polypody
  • Polypodium appalachianum — Appalachian rockcap fern
  • Polypodium glycyrrhiza — licorice fern
  • Polypodium hesperium — western polypody
  • Polypodium scouleri — coast polypody
  • Polypodium sibiricum — Siberian polypody
  • Polypodium virginianum — rock polypody
  • Polypodium x incognitum

[edit] Polytrichaceae

  • Atrichum altecristatum
  • Atrichum angustatum
  • Atrichum crispum
  • Atrichum haussknechtii
  • Atrichum oerstedianum
  • Atrichum selwynii
  • Atrichum tenellum
  • Atrichum undulatum — wavy catherinea
  • Bartramiopsis lescurii
  • Oligotrichum aligerum
  • Oligotrichum falcatum
  • Oligotrichum hercynicum
  • Oligotrichum parallelum
  • Pogonatum brachyphyllum — haircap
  • Pogonatum contortum
  • Pogonatum dentatum — haircap
  • Pogonatum pensilvanicum
  • Pogonatum urnigerum — haircap
  • Polytrichastrum alpinum — alpine polytrichastrum moss
  • Polytrichum commune — common haircap moss
  • Polytrichum formosum
  • Polytrichum hyperboreum
  • Polytrichum juniperinum — juniper moss
  • Polytrichum longisetum — haircap
  • Polytrichum lyallii
  • Polytrichum ohioense
  • Polytrichum pallidisetum
  • Polytrichum piliferum — hairmoss
  • Polytrichum sexangulare
  • Polytrichum sphaerothecium
  • Polytrichum strictum — bog haircap moss
  • Polytrichum swartzii
  • Psilopilum cavifolium
  • Psilopilum laevigatum

[edit] Pontederiaceae

[edit] Porellaceae

  • Porella cordaeana
  • Porella navicularis
  • Porella pinnata
  • Porella platyphylla
  • Porella platyphylloidea
  • Porella roellii

[edit] Portulacaceae

  • Calandrinia ciliata — red maids
  • Cistanthe tweedyi — Tweedy's bitterroot
  • Cistanthe umbellata — Mount Hood pussy-paws
  • Claytonia caroliniana — Carolina spring-beauty
  • Claytonia cordifolia — heartleaf spring-beauty
  • Claytonia exigua — serpentine spring-beauty
  • Claytonia lanceolata — lanceleaf spring-beauty
  • Claytonia megarhiza — alpine spring-beauty
  • Claytonia ogilviensis — Ogilve Mountain spring-beauty
  • Claytonia parviflora — littleflower spring-beauty
  • Claytonia perfoliata — miner's-lettuce
  • Claytonia rubra — redstem spring-beauty
  • Claytonia sarmentosa — Alaska spring-beauty
  • Claytonia scammaniana — Scamman's spring-beauty
  • Claytonia sibirica — Siberian spring-beauty
  • Claytonia tuberosa — tuber spring-beauty
  • Claytonia virginica — narrowleaf spring-beauty
  • Claytonia washingtoniana — Washington spring-beauty
  • Lewisia columbiana — Columbian bitterroot
  • Lewisia pygmaea — alpine bitterroot
  • Lewisia rediviva — Oregon bitterroot
  • Lewisia triphylla — three-leaf bitterroot
  • Montia bostockii — Bostock's miner's-lettuce
  • Montia chamissoi — Chamisso's miner's-lettuce
  • Montia dichotoma — dwarf miner's-lettuce
  • Montia diffusa — diffuse montia
  • Montia fontana — fountain miner's-lettuce
  • Montia howellii — Howell's miner's-lettuce
  • Montia linearis — linearleaf miner's-lettuce
  • Montia parvifolia — littleleaf miner's-lettuce
  • Talinum sediforme — Okanogan flameflower

[edit] Potamogetonaceae

  • Potamogeton alpinus — northern pondweed
  • Potamogeton amplifolius — largeleaf pondweed
  • Potamogeton bicupulatus — snail-seed pondweed
  • Potamogeton confervoides — algæ-like pondweed
  • Potamogeton epihydrus — Nuttall's pondweed
  • Potamogeton filiformis — slender pondweed
  • Potamogeton foliosus — leafy pondweed
  • Potamogeton friesii — Fries' pondweed
  • Potamogeton gramineus — grassy pondweed
  • Potamogeton hillii — Hill's pondweed
  • Potamogeton illinoensis — Illinois pondweed
  • Potamogeton methyensis — Methy Lake pondweed
  • Potamogeton natans — floating pondweed
  • Potamogeton nodosus — longleaf pondweed
  • Potamogeton oakesianus — Oakes' pondweed
  • Potamogeton oblongus — cinnamon-spot pondweed
  • Potamogeton obtusifolius — bluntleaf pondweed
  • Potamogeton ogdenii — Ogden's pondweed
  • Potamogeton pectinatus — Sago pondweed
  • Potamogeton perfoliatus — claspingleaf pondweed
  • Potamogeton praelongus — whitestem pondweed
  • Potamogeton pulcher — spotted pondweed
  • Potamogeton pusillus — slender pondweed
  • Potamogeton richardsonii — redheadgrass
  • Potamogeton robbinsii — flatleaf pondweed
  • Potamogeton spirillus — spiral pondweed
  • Potamogeton strictifolius — straightleaf pondweed
  • Potamogeton subsibiricus — Yenisei River pondweed
  • Potamogeton vaginatus — sheathed pondweed
  • Potamogeton vaseyi — Vasey's pondweed
  • Potamogeton x faxonii — Faxon's pondweed
  • Potamogeton x griffithii — Griffith's pondweed
  • Potamogeton x hagstroemii — Hagstrøm's pondweed
  • Potamogeton x haynesii — Haynes' pondweed
  • Potamogeton x nericus
  • Potamogeton x nitens
  • Potamogeton x saxonicus — Saxon pondweed
  • Potamogeton x schreberi — Schreiber's pondweed
  • Potamogeton x scoliophyllus
  • Potamogeton x sparganiifolius
  • Potamogeton x spathuliformis
  • Potamogeton x suecicus
  • Potamogeton zosteriformis — flatstem pondweed

[edit] Pottiaceae

  • Acaulon muticum
  • Acaulon triquetrum
  • Aloina bifrons
  • Aloina brevirostris
  • Aloina rigida
  • Anoectangium aestivum
  • Anoectangium tenuinerve
  • Astomum muehlenbergianum
  • Astomum phascoides
  • Barbula amplexifolia
  • Barbula convoluta
  • Barbula coreensis
  • Barbula eustegia
  • Barbula indica
  • Barbula unguiculata
  • Bryoerythrophyllum columbianum
  • Bryoerythrophyllum ferruginascens
  • Bryoerythrophyllum recurvirostre
  • Crossidium aberrans
  • Crossidium seriatum
  • Crumia latifolia
  • Desmatodon cernuus
  • Desmatodon convolutus
  • Desmatodon guepinii
  • Desmatodon heimii
  • Desmatodon latifolius
  • Desmatodon laureri
  • Desmatodon leucostoma
  • Desmatodon obtusifolius
  • Desmatodon porteri
  • Desmatodon randii
  • Desmatodon systylius
  • Didymodon asperifolius
  • Didymodon fallax
  • Didymodon johansenii
  • Didymodon leskeoides
  • Didymodon michiganensis
  • Didymodon nevadensis
  • Didymodon nigrescens
  • Didymodon rigidulus
  • Didymodon subandreaeoides
  • Didymodon tophaceus
  • Didymodon vinealis
  • Eucladium verticillatum — lime-seep eucladium
  • Geheebia gigantea
  • Gymnostomum aeruginosum
  • Gymnostomum calcareum
  • Gyroweisia reflexa
  • Gyroweisia tenuis
  • Hymenostylium insigne
  • Hymenostylium recurvirostre — hymenostylium moss
  • Hyophila involuta — hyophila moss
  • Molendoa sendtneriana
  • Oxystegus spiralis
  • Oxystegus tenuirostris
  • Paraleptodontium recurvifolium
  • Phascum cuspidatum
  • Phascum floerkeanum
  • Phascum vlassovii
  • Pleurochaete squarrosa
  • Pottia bryoides
  • Pottia davalliana
  • Pottia intermedia
  • Pottia nevadensis
  • Pottia truncata
  • Pottia wilsonii
  • Pseudocrossidium revolutum
  • Pterygoneurum kozlovii
  • Pterygoneurum lamellatum
  • Pterygoneurum ovatum
  • Pterygoneurum subsessile
  • Stegonia latifolia
  • Stegonia pilifera
  • Timmiella crassinervis
  • Tortella arctica
  • Tortella fragilis
  • Tortella humilis
  • Tortella inclinata
  • Tortella tortelloides
  • Tortella tortuosa — twisted moss
  • Tortula amplexa
  • Tortula bartramii
  • Tortula bolanderi
  • Tortula brevipes
  • Tortula cainii
  • Tortula caninervis — tortula moss
  • Tortula laevipila
  • Tortula latifolia
  • Tortula mucronifolia
  • Tortula muralis
  • Tortula norvegica
  • Tortula papillosa
  • Tortula papillosissima
  • Tortula princeps
  • Tortula ruralis — tortula moss
  • Tortula scotteri
  • Tortula subulata
  • Trichostomopsis australasiae
  • Trichostomum arcticum
  • Trichostomum crispulum
  • Weissia controversa
  • Weissia hedwigii

[edit] Primulaceae

  • Anagallis minima — chaffweed
  • Androsace chamaejasme — sweetflower rock-jasmine
  • Androsace filiformis — slender rock-jasmine
  • Androsace occidentalis — western rock-jasmine
  • Androsace septentrionalis — pygmyflower rock-jasmine
  • Dodecatheon conjugens — Bonneville shootingstar
  • Dodecatheon dentatum — white shootingstar
  • Dodecatheon frigidum — northern shootingstar
  • Dodecatheon hendersonii — Henderson's shootingstar
  • Dodecatheon jeffreyi — Jeffrey's shootingstar
  • Dodecatheon meadia — shootingstar
  • Dodecatheon pulchellum — few-flower shootingstar
  • Douglasia alaskana — Alaska rock-jasmine
  • Douglasia arctica — MacKenzie's river douglasia
  • Douglasia gormanii — Gorman's douglasia
  • Douglasia laevigata — cliff douglasia
  • Douglasia montana — mountain douglasia
  • Douglasia ochotensis — Alaska douglasia
  • Glaux maritima — sea milkwort
  • Lysimachia ciliata — fringed loosestrife
  • Lysimachia hybrida — lanceleaf loosestrife
  • Lysimachia lanceolata — lanceleaf loosestrife
  • Lysimachia quadriflora — four-flower loosestrife
  • Lysimachia quadrifolia — whorled yellow loosestrife
  • Lysimachia terrestris — swamp loosestrife
  • Lysimachia thyrsiflora — water loosestrife
  • Lysimachia x commixta
  • Lysimachia x producta
  • Primula borealis — slender primrose
  • Primula cuneifolia — wedgeleaf primrose
  • Primula egaliksensis — Greenland primrose
  • Primula eximia — Arctic primrose
  • Primula incana — Jones' primrose
  • Primula laurentiana — St. Lawrence primrose
  • Primula mistassinica — bird's-eye primrose
  • Primula nutans — sleepy primrose
  • Primula stricta — stiff primrose
  • Samolus valerandi — Valerand's brookweed
  • Trientalis borealis — northern starflower
  • Trientalis europaea — Arctic starflower

[edit] Pseudolepicoleaceae

  • Blepharostoma trichophyllum

[edit] Pteridaceae

  • Adiantum aleuticum — Aleutian maidenhair fern
  • Adiantum capillus-veneris — southern maidenhair fern
  • Adiantum pedatum — northern maidenhair fern
  • Adiantum viridimontanum — green mountain maidenhair fern
  • Aspidotis densa — Indian's-dream
  • Cheilanthes feei — Fee's lipfern
  • Cheilanthes gracillima — lace lipfern
  • Cryptogramma acrostichoides — American rockbrake
  • Cryptogramma cascadensis — Cascade rockbrake
  • Cryptogramma sitchensis — Sitka rockbrake
  • Cryptogramma stelleri — fragile rockbrake
  • Pellaea atropurpurea — purplestem rockbrake
  • Pellaea gastonyi — Gastony's rockbrake
  • Pellaea glabella — smooth rockbrake
  • Pentagramma triangularis — western gold fern

[edit] Pterigynandraceae

  • Heterocladium dimorphum
  • Heterocladium macounii
  • Heterocladium procurrens
  • Iwatsukiella leucotricha
  • Myurella julacea
  • Myurella sibirica
  • Myurella tenerrima
  • Pterigynandrum filiforme

[edit] Ptilidiaceae

  • Ptilidium ciliare — northern naugehyde liverwort
  • Ptilidium pulcherrimum

[edit] Ptychomitriaceae

  • Campylostelium saxicola — rock-loving swan-necked moss
  • Ptychomitrium gardneri
  • Ptychomitrium incurvum

[edit] Pyrolaceae

  • Pyrola asarifolia — pink wintergreen
  • Pyrola chlorantha — greenflower wintergreen
  • Pyrola elliptica — shinleaf
  • Pyrola grandiflora — Arctic wintergreen
  • Pyrola minor — lesser wintergreen
  • Pyrola picta — whitevein wintergreen