Madia sativa
Coast tarweed
|
Asteraceae
|
Maianthemum dilatatum
|
False lily-of-the-valley
|
Liliaceae
|
Malva moschata*
|
Musk mallow
|
Malvaceae
|
Malva neglecta*
|
Dwarf mallow
|
Malvaceae
|
Malva sylvestris*
|
Common mallow
|
Malvaceae
|
Matricaria matricarioides*
|
Pineapple weed
|
Asteraceae
|
Medicago hispida*
|
Burclover
|
Fabaceae
|
Medicago lupulina*
|
Black medic
|
Fabaceae
|
Medicago sativa*
|
Alfalfa
|
Fabaceae
|
Melica subulata
|
Alaska onion-grass
|
Poaceae
|
Melilotus alba*
|
White sweet-clover
|
Fabaceae
|
Melilotus indica*
|
Small-fl. yellow sweet-clover
|
Fabaceae
|
Melilotus officinalis*
|
Yellow sweet-clover
|
Fabaceae
|
Mentha arvensis
|
Field mint
|
Lamiaceae
|
Menyanthes trifoliata
|
Buckbean
|
Menyanthaceae
|
Mimulus guttatus
|
Common monkey-flower
|
Scrophulariaceae
|
Monotropa uniflora
|
Indian pipe
|
Ericaceae
|
Montia perfoliata
|
Miner's lettuce
|
Portulacaceae
|
Montia sibirica
|
Candyflower
|
Portulacaceae
|
Montia spathulata
|
Pale montia
|
Portulacaceae
|
Muscari armeniacum*
|
Armenium grape-hyacinth
|
Liliaceae
|
Myosotis laxa
|
Small-flowered forget-me-not
|
Boraginaceae
|
Narcissus pseudonarcissus*
|
Daffodil
|
Amaryllidaceae
|
Nemophila parviflora
|
Small-flowered nemophila
|
Hydrophyllaceae
|
Nuphar polysepala
|
Pond lily
|
Nymphaeaceae
|
Nymphaea odorata*
|
American water-lily
|
Nymphaeaceae
|
Oemleria cerasiformus
|
Indian plum
|
Rosaceae
|
Oenanthe sarmentosa
|
Water parsley
|
Apiaceae
|
Opuntia fragilis
|
Brittle cactus
|
Cactaceae
|
Origanum vulgare*
|
Wild majoram
|
Lamiaceae
|
Orobanche californica
|
California broomrape
|
Orobanchaceae
|
Orobanche uniflora
|
Naked broom-rape
|
Orobanchaceae
|
Orthocarpus pusillus
|
Dwarf owl-clover
|
Scrophulariaceae
|
Osmorhiza chilensis
|
Mountain sweet-cicely
|
Apiaceae
|
Oxalis corniculata*
|
Creeping yellow wood-sorrel
|
Oxalidaceae
|
Pachistima myrsinites
|
Mountain box
|
Celastraceae
|
Papaver rhoeas*
|
Corn poppy
|
Papaveraceae
|
Parapholis incurva*
|
Sickle-grass
|
Poaceae
|
Petasites frigidus
|
Sweet coltsfoot
|
Asteraceae
|
Phacelia linearis
|
Thread-leaf phacelia
|
Hydrophyllaceae
|
Phalaris arundinacea*
|
Reed canarygrass
|
Poaceae
|
Phyllospadix scouleri
|
Scouler's surf-grass
|
Zosteraceae
|
Physocarpus capitatus
|
Pacific ninebark
|
Rosaceae
|
Picea sitchensis
|
Sitka spruce
|
Pinaceae
|
Pinus contorta
|
Lodgepole pine
|
Pinaceae
|
Pityrogramma triangularis
|
Gold-back fern
|
Polypodiaceae
|
Plantago lanceolata*
|
English plantain
|
Plantaginaceae
|
Plantago major*
|
Common plantain
|
Plantaginaceae
|
Plantago maritima
|
Seaside plantain
|
Plantaginaceae
|
Plectritis congesta
|
Sea blush
|
Valerianaceae
|
Poa annua*
|
Annual bluegrass
|
Poaceae
|
Poa bulbosa*
|
Bulbous bluegrass
|
Poaceae
|
Poa macrantha
|
Seashore bluegrass
|
Poaceae
|
Poa nervosa
|
Wheeler bluegrass
|
Poaceae
|
Poa pratensis*
|
Kentucky bluegrass
|
Poaceae
|
Polygonum aviculare*
|
Doorweed
|
Polygonaceae
|
Polygonum paronychia
|
Beach knotweed
|
Polygonaceae
|
Polypodium amorphum
|
Irregular polypody
|
Polypodiaceae
|
Polypodium glycyrrhiza
|
Licorice fern
|
Polypodiaceae
|
Polystichum munitum
|
Western sword fern
|
Polypodiaceae
|
Populus nigra*
|
Lombardy poplar
|
Salicaceae
|
Populus tremuloides
|
Quaking aspen
|
Salicaceae
|
Populus trichocarpa
|
Black cottonwood
|
Salicaceae
|
Potamogeton amplifolius
|
Large-flowered pondweed
|
Potamogetonaceae
|
Potamogeton natans
|
Floating-leaf pondweed
|
Potamogetonaceae
|
Potentilla gracilis
|
Graceful cinquefoil
|
Rosaceae
|
Potentilla pacifica
|
Pacific silverweed
|
Rosaceae
|
Potentilla palustris
|
Marsh cinquefoil
|
Rosaceae
|
Prunella vulgaris
|
Self-heal
|
Lamiaceae
|
Prunus avium*
|
Sweet cherry
|
Rosaceae
|
Prunus cerasifera*
|
Cherry plum
|
Rosaceae
|
Prunus emarginata
|
Bitter cherry
|
Rosaceae
|
Prunus laurocerasus*
|
English laurel
|
Rosaceae
|
Prunus lusitanica*
|
Portugal laurel
|
Rosaceae
|
Pseudotsuga menziesii
|
Douglas fir
|
Pinaceae
|
Pteridium aquilinum
|
Bracken
|
Polypodiaceae
|
Puccinellia nutkaensis
|
Pacific alkaligrass
|
Poaceae
|
Pyracantha coccinea*
|
Firethorn
|
Rosaceae
|
Pyrola asarifolia
|
Pink wintergreen
|
Ericaceae
|
Pyrus communis*
|
Pear
|
Rosaceae
|
Pyrus fusca
|
Pacific crabapple
|
Rosaceae
|
Pyrus malus*
|
European crabpple
|
Rosaceae
|
Quercus garryana
|
Oregon white oak
|
Fagaceae
|
Ranunculus acris*
|
Meadow buttercup
|
Ranunculaceae
|
Ranunculus occidentalis
|
Western buttercup
|
Ranunculaceae
|
Ranunculus repens*
|
Creeping buttercup
|
Ranunculaceae
|
Ranunculus sceleratus
|
Celery-leaved buttercup
|
Ranunculaceae
|
Ranunculus uncinatus
|
Little buttercup
|
Ranunculaceae
|
Reseda alba*
|
Upright mignonette
|
Resedaceae
|
Rhamnus purshiana
|
Cascara
|
Rhamnaceae
|
Rhododendron macrophyllum
|
Western rhododendron
|
Ericaceae
|
Rhus glabra
|
Sumac
|
Anacardiaceae
|
Rhyncospora alba
|
White-beaked rush
|
Cyperaceae
|
Ribes bracteosum
|
Stink currant
|
Grossulariaceae
|
Ribes divaricatum
|
Coast black gooseberry
|
Grossulariaceae
|
Ribes lacustre
|
Prickly currant
|
Grossulariaceae
|
Ribes sanguineum
|
Red-flowered currant
|
Grossulariaceae
|
Robinia pseudoacacia*
|
Black locust
|
Fabaceae
|
Rorippa nasturtium-aquaticum*
|
Water cress
|
Brassicaceae
|
Rorippa obtusa
|
Blunt-leaf yellowcress
|
Brassicaceae
|
Rosa eglanteria*
|
Sweetbrier
|
Rosaceae
|
Rosa gymnocarpa
|
Baldhip rose
|
Rosaceae
|
Rosa nutkana
|
Nootka rose
|
Rosaceae
|
Rosa pisocarpa
|
Clustered wild rose
|
Rosaceae
|
Rosa rugosa*
|
Japanese beach rose
|
Rosaceae
|
Rosmarinus officinalis*
|
Rosemary
|
Rosaceae
|
Rubus discolor*
|
Himalayan blackberry
|
Rosaceae
|
Rubus laciniatus*
|
Evergreen blackberry
|
Rosaceae
|
Rubus leucodermis
|
Blackcap
|
Rosaceae
|
Rubus parviflorus
|
Thimbleberry
|
Rosaceae
|
Rubus spectabilis
|
Salmonberry
|
Rosaceae
|
Rubus ursinus
|
Wild blackberry
|
Rosaceae
|
Rumex acetosella*
|
Sheep sorrel
|
Polygonaceae
|
Rumex crispus*
|
Sour dock
|
Polygonaceae
|
Rumex obtusifolius*
|
Broad-leaved dock
|
Polygonaceae
|
Rumex tenuifolius*
|
Slender-leaved dock
|
Polygonaceae
|
Salicornia virginica
|
Pickleweed
|
Chenopodiaceae
|
Salix babylonica*
|
Weeping willow
|
Salicaceae
|
Salix lasiandra
|
Pacific willow
|
Salicaceae
|
Salix matsudana*
|
Corkscrew willow
|
Salicaceae
|
Salix piperi
|
Piper's willow
|
Salicaceae
|
Salix rigida
|
Mackenzie willow
|
Salicaceae
|
Salix scouleriana
|
Scouler willow
|
Salicaceae
|
Salix sitchensis
|
Sitka willow
|
Salicaceae
|
Sambucus racemosa
|
Red elderberry
|
Caprifoliaceae
|
Sanicula bipinnatifida
|
Purple sanicle
|
Apiaceae
|
Sanicula crassicaulis
|
Pacific sanicle
|
Apiaceae
|
Satureja douglasii
|
Yerba buena
|
Lamiaceae
|
Saxifraga integrifolia
|
Grassland saxifrage
|
Saxifragaceae
|
Scirpus acutus
|
Hard-stem bulrush
|
Cyperaceae
|
Scirpus americanus
|
Three-square bulrush
|
Cyperaceae
|
Scirpus maritimus
|
Cosmopolitan bulrush
|
Cyperaceae
|
Scirpus microcarpus
|
Small-flowered bulrush
|
Cyperaceae
|
Scutellaria galericulata
|
Marsh skullcap
|
Lamiaceae
|
Sedum acre*
|
Wall-pepper
|
Crassulaceae
|
Sedum spathulifolium
|
|