Mt. Si, King County, WA.
List covers plants found in the Mt. Si Natural Resource Conservation Area near North Bend, WA. Study by Lois Kemp, 1995. 336 spp.
These lists represent the work of different WNPS members over the years.
Their accuracy has not been verified by the Washington Native Plant Society.
We offer these lists to individuals as a tool to enhance the enjoyment and study of native plants.
Vascular Plant List
Mt. Si
* - Introduced
Scientific Name Common Name Family Name
Abies amabilis Pacific silver fir Pinaceae
Abies grandis Grand fir Pinaceae
Abies lasiocarpa Sub-alpine fir Pinaceae
Abies procera Noble fir Pinaceae
Acer circinatum Vine maple Aceraceae
Acer macrophyllum Big-leaf maple Aceraceae
Achillea millifolium Yarrow Asteraceae
Achlys triphylla Vanilla leaf Berberidaceae
Actaea rubra Baneberry Ranunculaceae
Adenocaulon bicolor Pathfinder Asteraceae
Adiantum pedatum Maidenhair fern Polypodiaceae
Agrostis alba* Red top Poaceae
Agrostis diegoensis Thin bentgrass Poaceae
Agrostis exarata* Spike bentgrass Poaceae
Agrostis scabra Tickle-grass Poaceae
Agrostis tenuis* Colonial bentgrass Poaceae
Agrostis thurberiana Thurber bentgrass Poaceae
Agrostis variabilis Variable bentgrass Poaceae
Aira caryophyllea* Silver hairgrass Poaceae
Alnus rubra Red alder Betulaceae
Alnus sinuata Sitka alder Betulaceae
Amelanchier alnifolia Serviceberry Rosaceae
Anaphalis margaritacea Pearly everlasting Asteraceae
Angelica genuflexa Kneeling angelica Apiaceae
Antennaria neglecta Field pussy-toes Asteraceae
Antennaria racemosa Raceme pussy-toes Asteraceae
Anthoxanthum odoratum* Sweet vernalgrass Poaceae
Aquilegia formosa Red columbine Ranunculaceae
Arabis hirsuta Hairy rockcress Brassicaceae
Arbutus menziesii Pacific madrone Ericaceae
Arctostaphylos columbiana Bristly manzanita Ericaceae
Arctostaphylos uva-ursi Bearberry Ericaceae
Arenaria macrophylla Big-leaf sandwort Caryophyllaceae
Arnica chamissonis Meadow arnica Asteraceae
Arnica latifolia Mountain arnica Asteraceae
Artemesia suksdorfii Suksdorf's sagewort Asteraceae
Artemesia trifurcata Three-forked artemesia Asteraceae
Aruncus sylvester Goatsbeard Rosaceae
Asarum caudatum Wild ginger Aristolochiaceae
Aspidotus densa Indian's dream fern Polypodiaceae
Asplenium trichomanes Maidenhair spleenwort Polypodiaceae
Aster foliaceus Leafy aster Asteraceae
Athyrium filix-femina Lady fern Polypodiaceae
Berberis nervosa Cascade Oregongrape Berberidaceae
Blechnum spicant Deer fern Polypodiaceae
Boykinia elata Coast boykinia Saxifragaceae
Brodiaea hyacinthina Hyacinth brodiaea Liliaceae
Bromus carinatus California brome Poaceae
Bromus sitchensis Alaska brome Poaceae
Bromus vulgaris Narrow-leaf brome Poaceae
Buddleja davidii Butterfly bush Buddlejaceae
Calamagrostis canadensis Bluejoint Poaceae
Calamagrostis sequiflora 1 &1/2 flowered reedgrass Poaceae
Callitriche stagnalis Pond water-starwort Callitrichaceae
Caltha biflora White marshmarigold Ranunculaceae
Campanula rotundifolia Common harebell Campanulaceae
Campanula scouleri Scouler's harebell Campanulaceae
Cardamine oligosperma Little Western bittercress Brassicaceae
Carex brunnescens Brown sedge Cyperaceae
Carex deweyana Dewey's sedge Cyperaceae
Carex hendersonii Henderson's sedge Cyperaceae
Carex interior Inland sedge Cyperaceae
Carex laeviculmis Smooth-stemmed sedge Cyperaceae
Carex lenticularis Lenticular sedge Cyperaceae
Carex mertensii Merten's sedge Cyperaceae
Carex microptera Small-winged sedge Cyperaceae
Carex nigricans Black alpine sedge Cyperaceae
Carex obnupta Slough sedge Cyperaceae
Carex pachystachya Pachystachy sedge Cyperaceae
Carex utriculata Beaked sedge Cyperaceae
Carex vesicaria Inflated sedge Cyperaceae
Cassiope mertensiana White mountain heather Ericaceae
Castilleja hispida Harsh paintbrush Scrophulariaceae
Castilleja miniata Scarlet paintbrush Scrophulariaceae
Ceanothus sanguineus Redstem ceanothus Rhamnaceae
Cerastium arvense Field chickweed Caryophyllaceae
Chamaecyparis nookatensis Alaska cedar Cupressaceae
Cheilanthes gracillima Lace fern Polypodiaceae
Chimaphila menziesii Little pipsissewa Ericaceae
Chimaphila umbellata Pipsissewa Ericaceae
Circea alpina Enchanter's nightshade Onagraceae
Cirsium arvense* Canada thistle Asteraceae
Cirsium brevistylum Indian thistle Asteraceae
Cirsium vulgare* Bull thistle Asteraceae
Cladothamnus pyroliflorus Copperbush Ericaceae
Clintonia uniflora Queen's cup Liliaceae
Collomia heterophylla Varied-leaf collomia Polemoniaceae
Conium maculatum* Poison hemlock Apiaceae
Corallorhiza maculata Spotted coral-root Orchidaceae
Corallorhiza striata Striped coral-root Orchidaceae
Cornus nuttallii Pacific dogwood Cornaceae
Cornus unalaschensis Bunchberry Cornaceae
Corylus cornuta Hazelnut Betulaceae
Cryptogramma crispa Parsley fern Polypodiaceae
Cystopteris fragilis Fragile fern Polypodiaceae
Cytisus scoparius* Scot's broom Fabaceae
Dactylis glomerata* Orchard grass Poaceae
Danthonia spicata Poverty danthonia Poaceae
Deschampsia atropurpurea Mountain hairgrass Poaceae
Deschampsia caespitosa Tufted hairgrass Poaceae
Deschampsia elongata Slender hairgrass Poaceae
Dianthus armeria* Grass pink Caryophyllaceae
Dicentra formosa Bleeding heart Fumariaceae
Digatalis purpurea* Foxglove Scrophulariaceae
Disporum hookeri Hooker fairy-bell Liliaceae
Dodecatheon jeffreyi Jeffrey's shooting star Primulaceae
Dryopteris austriaca Spreading wood-fern Polypodiaceae
Elymus glaucus Western ryegrass Poaceae
Elymus hirsutus Hairy ryegrass Poaceae
Epilobium alpinum Alpine willow-herb Onagraceae
Epilobium angustifolium Fireweed Onagraceae
Epilobium glandulosum Common willow-herb Onagraceae
Epilobium watsonii Watson's willow-herb Onagraceae
Equisetum arvense Common horsetail Equisetaceae
Equisetum fluviatale Swamp horsetail Equisetaceae
Equisetum telmateia Giant horsetail Equisetaceae
Erigeron annuus Annual fleabane Asteraceae
Erigeron peregrinus Subalpine daisy Asteraceae
Erigeron philadelphicus Phidelphia daisy Asteraceae
Eriophyllum lanatum Oregon sunshine Asteraceae
Festuca arundinacea* Tall fescue Poaceae
Festuca bromoides* Barren fescue Poaceae
Festuca idahoensis Blue bunchgrass Poaceae
Festuca myuros* Rat-tail fescue Poaceae
Festuca occidentalis Western fescue Poaceae
Festuca ovina Sheep fescue Poaceae
Festuca subuliflora Crinkle-awn fescue Poaceae
Fragaria vesca Wild strawberry Rosaceae
Fragaria virginiana Woods strawberry Rosaceae
Galium aparine Cleavers Rubiaceae
Galium asperrimum Rough bedstraw Rubiaceae
Galium kamyschaticum Boreal bedstraw Rubiaceae
Galium triflorum Fragrant bedstraw Rubiaceae
Gaultheria ovatifolia Slender wintergreen Ericaceae
Gaultheria shallon Salal Ericaceae
Gentiana calycosa Mountain bog gentian Gentianaceae
Geranium robertianum* Stinky Bob Geraniaceae
Geum macrophyllum Large-leaved avens Rosaceae
Glecoma hederacea* Creeping Charlie Lamiaceae
Glyceria elata Tall mannagrass Poaceae
Goodyera oblongifolia Rattlesnake-plantain Orchidaceae
Gymnocarpium dryopteris Oak fern Polypodiaceae
Hedera helix* English ivy Araliaceae
Heracleum lanatum Cow parsnip Apiaceae
Heuchera micrantha Small-flowered alumroot Saxifragaceae
Hieracium albiflorum White-flowered hawkweed Asteraceae
Holcus lanatus* Common velvet grass Poaceae
Holodiscus discolor Ocean spray Rosaceae
Hydrophyllum tenuipes Pacific waterleaf Hydrophyllaceae
Hypericum perforatum* Klamath weed Hypericaceae
Hypochaeris radicata* Hairy cat's-ear Asteraceae
Hypopites monotropa Pinesap Ericaceae
Ilex aquifolium* English holly Aquifoliaceae
Juncus alpinus Norhern rush Juncaceae
Juncus articulatus Jointed rush Juncaceae
Juncus drummondii Drummond's rush Juncaceae
Juncus effusus Soft rush Juncaceae
Juncus ensifolius Daggerleaf rush Juncaceae
Juncus filiformis Thread rush Juncaceae
Juncus mertensianus Merten's rush Juncaceae
Juncus supinus Bulbous rush Juncaceae
Juncus tenuis Slender rush Juncaceae
Juniperus communis Mountain juniper Cupressaceae
Koelaria cristata Prairie junegrass Poaceae
Lactuca muralis* Wall lettuce Asteraceae
Lactuca serriola* Prickly lettuce Asteraceae
Lapsana communis* Nipplewort Asteraceae
Lemna minor Duckweed Lemnaceae
Leucanthemum vulgare* Ox-eye daisy Asteraceae
Lilium columbianum Tiger lily Liliaceae
Linnaea borealis Twinflower Caprifoliaceae
Lolium perenne* English ryegrass Poaceae
Lomatium martindalei Few-flowered lomatium Apiaceae
Lonicera ciliosa Orange honeysuckle Caprifoliaceae
Lonicera involucrata Twinberry Caprifoliaceae
Lotus corniculatus* Birdsfoot trefoil Fabaceae
Lotus micranthus Miniature lotus Fabaceae
Luetkea pectinata Partridge foot Rosaceae
Luina hypoleuca Silverback luina Asteraceae
Lupinus latifolius Broad-leaf lupine Fabaceae
Luzula campestris Field woodrush Juncaceae
Luzula parviflora Small-flowered woodrush Juncaceae
Lycopodium camplanatum Ground cedar Lycopodiaceae
Lycopodium clavatum Running clubmoss Lycopodiaceae
Lycopodium selago Fir clubmoss Lycopodiaceae
Lycopodium sitchense Alaska clubmoss Lycopodiaceae
Lysichitum americanum Skunk cabbage Araceae
Maianthemum dilatatum False lily-of-the-valley Liliaceae
Melica bulbosa Onion-grass Poaceae
Melica subulata Alaska Onion-grass Poaceae
Menziesia feruginea Fool's huckleberry Ericaceae
Mertensia ciliata Broad-leaf bluebells Boraginaceae
Mitella breweri Brewer's miterwort Saxifragaceae
Mitella pentandra Alpine miterwort Saxifragaceae
Monotropa uniflora Single-flowered indian pipe Ericaceae
Montia parvifolia Streambank spring beauty Portulacaceae
Montia siberica Candyflower Portulacaceae
Myosotis sylvatica Wood forget-me-not Boraginaceae
Nemophila parviflora Small-flowered nemophila Hydrophyllaceae
Nothochelone nemerosa Woodland beard-tongue Scrophulariaceae
Oemlaria cerasiformus Indian plum Rosaceae
Oenanthe sarmentosa Water parsley Apiaceae
Oplopanax horridum Devil's club Araliaceae
Orthilia secunda One-sided wintergreen Ericaceae
Osmorhiza chilensis Mountain sweet-cicely Apiaceae
Pachistima myrsinites Mountain box Celastraceae
Panicum occidentale Western witchgrass Poaceae
Penstemon davidsonii Davidson's penstemon Scrophulariaceae
Petasites frigidus Coltsfoot Asteraceae
Phalaris arundinacea* Reed canarygrass Poaceae
Philadelphus lewisii Mock-orange Hydrangeaceae
Phlox diffusa Spreading phlox Polemoniaceae
Phyllodoce empetriformis Red mountain heather Ericaceae
Physocarpus capitatus Pacific ninebark Rosaceae
Picea sitchensis Sitka spruce Pinaceae
Pinus contorta Lodgepole pine Pinaceae
Pinus monticola Western white pine Pinaceae
Plantago lanceolata* English plantain Plantaginaceae
Plantago major* Common plantain Plantaginaceae
Platanthera saccata Slender bog-orchid Orchidaceae
Poa annua Annual bluegrass Poaceae
Poa compressa Canadian bluegrass Poaceae
Poa palustris Fowl meadow-grass Poaceae
Poa pratensis* Kentucky bluegrass Poaceae
Polygonum bistortoides Mountain bistort Polygonaceae
Polygonum minimum Leafy dwarf knotweed Polygonaceae
Polygonum persicaria Heartweed Polygonaceae
Polypodium glycyrrhiza Licorice fern Polypodiaceae
Polypodium hesperium Polypody Polypodiaceae
Polystichum munitum Sword fern Polypodiaceae
Populus trichocarpa Black cottonwood Salicaceae
Potamogeton natans Floating-leaf pondweed Potamogetonaceae
Prenanthes alata Wetern rattlesnake-root Asteraceae
Prunella vulgaris Self-heal Lamiaceae
Prunus emarginata Bitter cherry Rosaceae
Pseudotsuga menziesii Douglas fir Pinaceae
Pteridium aquilinum Bracken Polypodiaceae
Pterospora andromedea Pinedrops Ericaceae
Puccinellia pauciflora Weak alkaligrass Poaceae
Pyrola asarifolia Pink wintergreen Ericaceae
Pyrola picta White-veined wintergreen Ericaceae
Pyrus fusca Crabapple Rosaceae
Ranunculus aquatilis Water buttercup Ranunculaceae
Ranunculus occidentalis Western buttercup Ranunculaceae
Ranunculus orthorhynchus Straight-beak buttercup Ranunculaceae
Ranunculus repens* Creeping buttercup Ranunculaceae
Ranunculus uncinatus Little buttercup Ranunculaceae
Rhamnus purshiana Cascara Rhamnaceae
Ribes bracteosum Stink currant Grossulariaceae
Ribes howellii Maple-leaf currant Grossulariaceae
Ribes lacustre Prickly currant Grossulariaceae
Ribes sanguinium Red-flowered currant Grossulariaceae
Rosa gymnocarpa Baldhip rose Rosaceae
Rubus discolor* Himalayan blackberry Rosaceae
Rubus laciniatus* Evergreen blackberry Rosaceae
Rubus lasiococcus Dwarf bramble Rosaceae
Rubus leucodermis Blackcap Rosaceae
Rubus parviflorus Thimbleberry Rosaceae
Rubus pedatus Strawberry bramble Rosaceae
Rubus spectabilus Salmonberry Rosaceae
Rubus ursinus Wild blackberry Rosaceae
Rumex acetocella* Sheep sorrel Polygonaceae
Rumex crispus* Sour dock Polygonaceae
Rumex obtusifolius Broad-leaved dock Polygonaceae
Sagina procumbens Procumbant pearlwort Caryophyllaceae
Salix lasiandra Pacific willow Salicaceae
Salix scouleriana Scouler willow Salicaceae
Salix sitchensis Sitka willow Salicaceae
Sambucus cerulea Blue elderberry Caprifoliaceae
Sambucus racemosa Red elderberry Caprifoliaceae
Saxifraga bronchialis Spotted saxifrage Saxifragaceae
Saxifraga ferruginea Rusty saxifrage Saxifragaceae
Saxifraga mertensiana Merten's saxifrage Saxifragaceae
Saxifraga punctata Dotted saxifrage Saxifragaceae
Scirpus cyperinus Wool-grass Cyperaceae
Scirpus microcarpus Small-flowered bulrush Cyperaceae
Sedum oreganum Oregon stonecrop Crassulaceae
Sedum spathulifolium Broadleaved stonecrop Crassulaceae
Selaginella wallacei Wallace's selaginella Selaginellaceae
Senecio jacobaea* Tansy ragwort Asteraceae
Senecio sylvaticus* Wood groundsel Asteraceae
Senecio triangularis Arrowleaf groundsel Asteraceae
Smilacina racemosa False Solomon's seal Liliaceae
Smilacina stellata Star-flowered Solomon's seal Liliaceae
Solanum dulcamara* Bittersweet nightshade Solanaceae
Solidago canadensis Meadow goldenrod Asteraceae
Solidago multiradiata Northern goldenrod Asteraceae
Sonchus arvensis* Field sowthistle Asteraceae
Sorbus aucuparia* European mountain-ash Rosaceae
Sorbus sitchensis Sitka mountain-ash Rosaceae
Sparganium sp. Bur-reed Sparganiaceae
Spiraea betulifolia Birch-leafed spirea Rosaceae
Spiraea densiflora Rosy spirea Rosaceae
Spiraea douglasii Hardhack Rosaceae
Spiranthes romanzoffiana Hooded ladies-tresses Orchidaceae
Stachys cooleyae Cooley's hedge-nettle Lamiaceae
Stellaria calycantha Northern starwort Caryophyllaceae
Stellaria crispa Crisped starwort Caryophyllaceae
Stellaria media* Common chickweed Caryophyllaceae
Streptopus amplexifolius Clasping-leaved twisted-stalk Liliaceae
Streptopus roseus Rosy twisted-stalk Liliaceae
Symphoricarpos albus Common snowberry Caprifoliaceae
Taraxacum officinale* Dandelion Asteraceae
Taxus brevifolia Western yew Taxaceae
Thelypteris phegopteris Beech fern Polypodiaceae
Thuja plicata Western red cedar Cupressaceae
Tiarella trifoliata Foamflower Saxifragaceae
Tofieldia glutinosa Bog lily Liliaceae
Tolmia menziesii Youth-on-age Saxifragaceae
Trientalis latifolia Broadleaved starflower Primulaceae
Trifolium pratense* Red clover Fabaceae
Trifolium procumbens* Hop clover Fabaceae
Trifolium repens* White clover Fabaceae
Trillium ovatum White trillium Liliaceae
Trisetum canescens Tall trisetum Poaceae
Trisetum cernuum Nodding trisetum Poaceae
Tsuga heterophylla Western hemlock Pinaceae
Tsuga mertensiana Mountain hemlock Pinaceae
Typha latifolia Common cattail Typhaceae
Urtica dioica Stinging nettle Urticaceae
Vaccinium alaskense Alaska blueberry Ericaceae
Vaccinium deliciosum Cascade huckleberry Ericaceae
Vaccinium membranaceum Mountain huckleberry Ericaceae
Vaccinium ovalifolium Oval-leafed huckleberry Ericaceae
Vaccinium parvifolium Red huckleberry Ericaceae
Valeriana sitchensis Sitka valerian Valerianaceae
Veratrum viride Green false hellebore Liliaceae
Verbascum thapsus* Common mullein Scrophulariaceae
Veronica americana American brooklime Scrophulariaceae
Veronica officinalis* Common speedwell Scrophulariaceae
Veronica serpyllifolia Thyme-leaf speedwell Scrophulariaceae
Viola glabella Stream violet Violaceae
Viola palustris Marsh violet Violaceae
Viola sempervirens Evergreen violet Violaceae
Woodsia oregana Oregon woodsia Polypodiaceae
Xerophyllum tenax Beargrass Liliaceae
Mt. Si, King County, WA 2/2/2017
WNPS Plant Lists
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