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Poison Oak

Sumac Family.....Anacardia
Poison Oak..... Toxicodendron diversiloba
More information on the Poison Oak at Seward Park

Horsetails

Horsetail Family.....Equisetaceae
Common Horsetail.....Equisetum arvense
Scouring Rush.....Equisetum hyemale
Giant Horsetail.....Equisetum telmateia

Ferns

Blechnum Family.....Blechnaceae
Deer Fern.....Blechnum spicant

Polypody Family.....Polypodaeceae
Licorice Fern.....Polypodium glycyrrhiza

Bracken Family.....Dennstaedtiaceae
Bracken fern.....Pteridium aquilinum

Wood Fern Family.....Dryopteridaceae
Sword fern.....Polystichum munitum
Lady fern.....Athyrum felix-femina
Spreading Wood Fern.....Dryopteris expansa

Conifers

Yew Family.....Taxaceae
Pacific yew.....Taxus brevifolia

Cypress Family.....Cupressaceae
Western Red Cedar.....Thuja plicata

Pine Family.....Pinaceae
Grand Fir.....Abies grandis
Douglas Fir.....Pseudotsuga menzieseii
Western Hemlock.....Tsuga heterophylla
Lodgepole Pine.....Pinus contorta

Flowering Plants

Willow Family.....Salicaceae
Black Cottonwood.....Populus balsmaifera
Sitka Willow.....Salix sitchensis
Scouler's Willow.....Salix scouleriana
Pacific Willow.....Salix lucida
Hooker's Willow.....Salix hookeriana

Birch Family.....Betulaceae
Red Alder.....Alnus rubrus
Beaked Hazelnut.....Corylus cornuta

Beech Family.....Fagaceae
Garry Oak.....Quercus garryana

Buckwheat Family.....Polygonaceae
Mild Waterpepper.....Polygonum hydropiperoides
Bitter Dock.....Rumex obtusifolius

Nettle Family.....Urticaceae
Stinging Nettle.....Urtica dioica

Purslane Family.....Portulacacaea
Siberian Spring Beauty.....Claytonia sibirica
Miner's Lettuce.....Claytonia perfoliata

Hornwort Family.....Ceratophyllacae
Coontail.....Ceratophyllum demersum

Buttercup Family.....Ranunculacaea
Baneberry.....Actaea rubra

Barberry Family.....Berberidacaea
Cascade Oregon Grape.....Mahonia nervosa
Tall oregon grape.....Mahonia aquifolium
Vanilla Leaf.....Achlys triphylla
Inside-out Flower.....Vancouveria hexandra

Saxifrage Family.....Saxifragaceae
Fringecup.....Tellima grandifolia
Foamflower.....Tiarella trifoliata
Youth-on-Age.....Tolmeia menziesii

Gooseberry Family.....Grossulariacaea
Red-Flowering Currant.....Ribes sanguineum

Hydrangea Family.....Hydrangeacaea
Mockorange.....Philadelphus lewisii

Rose Family.....Rosaceae
Hardhack.....Spirea douglasii
Ocean Spray.....Holodiscus discolor
Wild Strawberry.....Fragaria sp.
Large-leafed Avens.....Geum macrophyllum
Bald-hip Rose.....Rosa gymnocarpa
Nootka Rose.....Rosa nutkana
Salmonberry.....Rubus spectabilis
Thimbleberry.....Rubus parviflorus
Trailing Blackberry.....Rubus ursinus
Blackcapped Raspberry.....Rubus leucodermis
Indian Plum.....Oemleria cerasiformia
Bitter Cherry.....Prunus emarginata
Black Hawthorn.....Crataegus douglasii
Saskatoon.....Amelanchier alnifolia
Crabapple.....Malus fusca

Sumac Family.....Anacardiacaea
Poison Oak.....Rhus diversiloba

Maple Family.....Aceracaea
Bigleaf Maple.....Acer macrophyllum
Vine Maple.....Acer circinatum

Buckthorn Family.....Rhamnaceae
Cascara.....Rhamnus purshiana
Snowbrush.....Ceanothus velutinus

Violet Family.....Violaceae
Trailing Yellow Violet.....Viola sempervirens

Evening Primrose Family.....Onagraceae
Fireweed.....Epilobium agustifolium
Willow-herb.....Epilobium ciliatum
Enchanter's Nightshade.....Circaea alpina

Parsley Family.....Apiaceae
Mountain Sweet Cicely.....Osmorhiza chilensis
Water-parsley.....Oenanthe sarmentosa

Dogwood Family.....Cornaceae
Pacific Dogwood.....Cornus nuttalli
Red-Osier Dogwood.....Cornus stolonifera

Heath Family.....Ercaceae
Madrona.....Arbutus menzeiesii
Red Huckleberry.....Vaccinium parviflorum
Evergreen Huckleberry.....Vaccinium ovatum
Salal.....Gaultheria shallon

Primrose Family.....Primulaceae

Star Flower.....Trientalis latifolia

Olive Family.....Oleaceae
Oregon Ash.....Fraxinus latifolia

Mint Family.....Lamiaceae
Red Dead-Nettle.....Lamium purpuriom
Self-Heal.....Prunella vulgaris
Stachys cooleyae
Cut-leaved Bugleweed.....Lycopus americanus

Figwort Family.....Scrophulariaceae
American Brooklime.....Veronica beccabunga

Madder Family.....Rubiaceae
Cleavers.....Galium aparine

Honeysuckle Family.....Caprifoliaceae
Trumpet Honeysuckle.....Lonicera ciliosa
Hairy Honeysuckle.....Lonercera hispidula
Red Elderberry.....Sambucus racemosa
Blue Elderberry.....Sambucus cerulea
Common Snowberry.....Symphoricarpos albus
Creeping Snowberry.....Symphoricarpos mollis

Aster Family.....Asteraceae
Pathfinder.....Adenocaulon bicolor
Douglas Aster.....Aster subspicatus
Leafy Beggar-ticks.....Bidens frondosa
Western Goldenrod.....Solidago occidentalis

Frog's-bit Family.....Hydrocharitaceae
Canadian Waterweed.....Elodea canadensis

Water-nymph Family.....Najadaceae
Guadalupe Water-nymph.....Najas guadalupensis

Pondweed Family.....Potamogetonaceae
Berchtold's Pondweed.....Potamogeton berchtoldii
Richardson's Pondweed.....Potamogeton richardsonii

Rush Family.....Juncaceae
Tapered Rush.....Juncus acuminatus
Soft Rush.....Juncus effusus
Trail Rush.....Juncus tenuis
Dagger-Leaf Rush.....Juncus ensifolius
Thread Rush.....Juncus filiformis

Sedge Family.....Cyperaceae
Dewey Sedge.....Carex deweyana
Slough Sedge.....Carex obnupta
Thick-Head Sedge.....Carex pachystachia
Sawbeak Sedge.....Carex stipata
Creeping Spikerush.....Eleocharis palustrus
Hard-Stem Bulrush.....Scirpus acutus
Small-Fruited Bulrush......Scirpus microcarpus

Cattail Family.....Typhacaea
Cattail.....Typha latifolia

Arum Family.....Araceae
Skunk Cabbage.....Lysichiton americanum

Lily Family.....Lilaceae
Trillium.....Trillium ovatum
Hooker's Fairybells.....Disporum hookeri

Vines
English Ivy

Groundcovers
Lawn grasses
Creeping Buttercup
Herb Robert
Chickweed

Wetland Plants
Yellow Loosestrife
Reed Canary Grass