Field mint
Lamiaceae
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Mentha piperita*
|
Peppermint
|
Lamiaceae
|
Menziesia ferruginea
|
Fool's huckleberry
|
Ericaceae
|
Mertensia platyphylla
|
Boradleaf bluebells
|
Boraginaceae
|
Microsteris gracilis
|
Pink microsteris
|
Polemoniaceae
|
Mimulus alsinoides
|
Chickweed monkey-flower
|
Scrophulariaceae
|
Mimulus dentatus
|
Toothed-leaf monkey-flower
|
Scrophulariaceae
|
Mimulus gutattus
|
Common monkey-flower
|
Scrophulariaceae
|
Mimulus moschatus
|
Musk-flower
|
Scrophulariaceae
|
Mimulus ringens*
|
Allegheny monkey-flower
|
Scrophulariaceae
|
Mitella caulescens
|
Leafy miterwort
|
Saxifragaceae
|
Mitella ovalis
|
Coastal mitrewort
|
Saxifragaceae
|
Mitella pentandra
|
Alpine miterwort
|
Saxifragaceae
|
Moneses uniflora
|
Woodnymph
|
Ericaceae
|
Montia fontana
|
Water chickweed
|
Portulacaceae
|
Montia linearis
|
Narrow-leaf montia
|
Portulacaceae
|
Montia parvifolia
|
Streambank spring beauty
|
Portulacaceae
|
Montia perfoliata
|
Miner's lettuce
|
Portulacaceae
|
Montia siberica
|
Candyflower
|
Portulacaceae
|
Montia spathulata
|
Pale montia
|
Portulacaceae
|
Myosotis arvensis*
|
Field forget-me-not
|
Boraginaceae
|
Myosotis discolor*
|
Yellow & blue forget-me-not
|
Boraginaceae
|
Myosotis laxa
|
Small-flowered forget-me-not
|
Boraginaceae
|
Myriophyllum brasiliense*
|
South American water-milfoil
|
Haloragaceae
|
Najas flexilus
|
Wavy water-nymph
|
Najadaceae
|
Navarretia intertexta
|
Needle-leaf navarretia
|
Polemoniaceae
|
Navarretia squarrosa
|
Skunkweed
|
Polemoniaceae
|
Nemophila parviflora
|
Small-flowered nemophila
|
Hydrophyllaceae
|
Nothochelone nemerosa
|
Woodland beard-tongue
|
Scrophulariaceae
|
Nuphar polysepalum
|
Pond lily
|
Nymphaeaceae
|
Nymphaea odorata*
|
American water-lily
|
Nymphaeaceae
|
Oemlaria cerasiformus
|
Indian plum
|
Rosaceae
|
Oenanthe sarmentosa
|
Water parsley
|
Apiaceae
|
Oenothera strigosa
|
Common evening-primrose
|
Onagraceae
|
Oplopanax horridum
|
Devil's club
|
Araliaceae
|
Orthocarpus castillejoides
|
Paintbrush owl-clover
|
Scrophulariaceae
|
Orthocarpus pusillus
|
Dwarf owl-clover
|
Scrophulariaceae
|
Osmorhiza chilensis
|
Mountain sweet-cicely
|
Apiaceae
|
Oxalis corniculata*
|
Creeping wood-sorrel
|
Oxalidaceae
|
Oxalis oregana
|
Oregon wood-sorrel
|
Oxalidaceae
|
Oxalis trilliifolia
|
Great oxalis
|
Oxalidaceae
|
Pachistima myrsinites
|
Mountain box
|
Celastraceae
|
Panicum miliaceum*
|
Broomcorn millet
|
Poaceae
|
Panicum occidentale
|
Western witchgrass
|
Poaceae
|
Parentucellia viscosa*
|
Yellow parentucellia
|
Scrophulariaceae
|
Pedicularis racemosa
|
Sickletop lousewort
|
Scrophulariaceae
|
Penstemon davidsonii
|
Davidson's penstemon
|
Scrophulariaceae
|
Penstemon ovatus
|
Broad-leaf penstemon
|
Scrophulariaceae
|
Penstemon richardsonii
|
Richardson's penstemon
|
Scrophulariaceae
|
Penstemon serrulatus
|
Cascade penstemon
|
Scrophulariaceae
|
Petasites frigidus
|
Coltsfoot
|
Asteraceae
|
Phacelia bolanderi
|
Bolander's phacelia
|
Hydrophyllaceae
|
Phacelia nemoralis
|
Woodland phacelia
|
Hydrophyllaceae
|
Phalaris arundinacea*
|
Reed canarygrass
|
Poaceae
|
Philadelphus lewisii
|
Mock-orange
|
Hydrangeaceae
|
Phleum pratense*
|
Timothy
|
Poaceae
|
Phlox diffusa
|
Spreading phlox
|
Polemoniaceae
|
Phragmites communis
|
Common reed
|
Poaceae
|
Physocarpus capitatus
|
Pacific ninebark
|
Rosaceae
|
Picea sitchensis
|
Sitka spruce
|
Pinaceae
|
Pinus contorta
|
Lodgepole pine
|
Pinaceae
|
Pityrogramma triangularis
|
Gold-back fern
|
Polypodiaceae
|
Plagiobothrys figuratus
|
Popcorn flower
|
Boraginaceae
|
Plantago lanceolata*
|
English plantain
|
Plantaginaceae
|
Plantago major*
|
Common plantain
|
Plantaginaceae
|
Plantago maritima
|
Seaside plantain
|
Plantaginaceae
|
Plantago psyllium*
|
Sand plantain
|
Plantaginaceae
|
Plectritus congesta
|
Sea blush
|
Valerianaceae
|
Pleuropogon refractus
|
Nodding semaphore-grass
|
Poaceae
|
Poa annua
|
Annual bluegrass
|
Poaceae
|
Poa bulbosa*
|
Bulbous bluegrass
|
Poaceae
|
Poa gracillima
|
Slender bluegrass
|
Poaceae
|
Poa laxiflora
|
Loose-flowered bluegrass
|
Poaceae
|
Poa marcida
|
Withered bluegrass
|
Poaceae
|
Poa pratensis*
|
Kentucky bluegrass
|
Poaceae
|
Poa trivialis
|
Roughstalk bluegrass
|
Poaceae
|
Polemonium carneum
|
Great polemonium
|
Polemoniaceae
|
Polygonum aviculare*
|
Doorweed
|
Polygonaceae
|
Polygonum convolvulus*
|
Black bindweed
|
Polygonaceae
|
Polygonum cuspidatum*
|
Japanese knotweed
|
Polygonaceae
|
Polygonum fowleri
|
Fowler's knotweed
|
Polygonaceae
|
Polygonum hydropiper
|
Marshpepper smartweed
|
Polygonaceae
|
Polygonum hydropiperoides
|
Waterpepper
|
Polygonaceae
|
Polygonum lapathifolium*
|
Willow weed
|
Polygonaceae
|
Polygonum minimum
|
Leafy dwarf knotweed
|
Polygonaceae
|
Polygonum nuttallii
|
Nuttall's knotweed
|
Polygonaceae
|
Polygonum persicaria*
|
Heartweed
|
Polygonaceae
|
Polygonum sachalinense*
|
Giant knotweed
|
Polygonaceae
|
Polypodium amorphum
|
Polypody
|
Polypodiaceae
|
Polypodium glycyrrhiza
|
Licorice fern
|
Polypodiaceae
|
Polypodium scouleri
|
Leathery polypody
|
Polypodiaceae
|
Polystichum munitum
|
Sword fern
|
Polypodiaceae
|
Populus trichocarpa
|
Black cottonwood
|
Salicaceae
|
Portulaca oleracea*
|
Purslane
|
Portulacaceae
|
Potamogeton berchtoldii
|
Berchtold's pondweed
|
Potamogetonaceae
|
Potamogeton crispus
|
Curled pondweed
|
Potamogetonaceae
|
Potamogeton gramineus
|
Grass-leaved pondweed
|
Potamogetonaceae
|
Potamogeton pectinatus
|
Fennel-leaf pondweed
|
Potamogetonaceae
|
Potamogeton richardsonii
|
Richardson's pondweed
|
Potamogetonaceae
|
Potamogeton robbinsii
|
Robbin's pondweed
|
Potamogetonaceae
|
Potentilla glandulosa
|
Sticky cinquefoil
|
Rosaceae
|
Potentilla pacifica
|
Pacific silverweed
|
Rosaceae
|
Potentilla palustris
|
Marsh cinquefoil
|
Rosaceae
|
Prenanthes alata
|
Wetern rattlesnake-root
|
Asteraceae
|
Prunus emarginata
|
Bitter cherry
|
Rosaceae
|
Pseudotsuga menziesii
|
Douglas fir
|
Pinaceae
|
Pteridium aquilinum
|
Bracken
|
Polypodiaceae
|
Puccinellia lucida
|
Shining alkaligrass
|
Poaceae
|
Puccinellia pauciflora
|
Weak alkaligrass
|
Poaceae
|
Puccinellia pumila
|
Dwarf alkaligrass
|
Poaceae
|
Pyrola picta
|
White-veined wintergreen
|
Ericaceae
|
Pyrus fusca
|
Crabapple
|
Rosaceae
|
Quercus garryana
|
Oregon white oak
|
Fagaceae
|
Ranunculus acris*
|
Meadow buttercup
|
Ranunculaceae
|
Ranunculus alismaefolius
|
Water-plantain buttercup
|
Ranunculaceae
|
Ranunculus occidentalis
|
Western buttercup
|
Ranunculaceae
|
Ranunculus orthorhynchus
|
Straight-beak buttercup
|
Ranunculaceae
|
Ranunculus repens*
|
Creeping buttercup
|
Ranunculaceae
|
Ranunculus scleratus
|
Blister buttercup
|
Ranunculaceae
|
Ranunculus uncinatus
|
Little buttercup
|
Ranunculaceae
|
Raphanus raphanistrum*
|
Jointed sharlock
|
Brassicaceae
|
Raphanus sativus*
|
Wild radish
|
Brassicaceae
|
Rhamnus purshiana
|
Cascara
|
Rhamnaceae
|
Rhus diversiloba
|
Poison oak
|
Anacardiaceae
|
Ribes bracteosum
|
Stink currant
|
Grossulariaceae
|
Ribes divaricatum
|
Coast black gooseberry
|
Grossulariaceae
|
Ribes lacustre
|
Prickly currant
|
Grossulariaceae
|
Ribes laxiflorum
|
Trailing black currant
|
Grossulariaceae
|
Ribes sanguinium
|
Red-flowered currant
|
Grossulariaceae
|
Robinia pseudoacacia*
|
Black locust
|
Fabaceae
|
Romanzoffia sitchensis
|
Sitka mistmaiden
|
Hydrophyllaceae
|
Rorippa curvisiliqua
|
Western yellowcress
|
Brassicaceae
|
|
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