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Washington Natural Heritage Information System
Known High-Quality or Rare Plant Communities and Wetland Ecosystems of Washington
September 2014

Snohomish County


Scientific Name
Common Name
Historic Record
Abies amabilis - Tsuga heterophylla / Oplopanax horridus Forest Pacific Silver Fir / Devil's-club
Abies amabilis - Tsuga heterophylla Cover Type Pacific Silver Fir - Western Hemlock Forest
Abies amabilis / Polystichum munitum Forest Pacific Silver Fir / Swordfern
Abies amabilis / Vaccinium ovalifolium - Gaultheria shallon Forest Pacific Silver Fir / Oval-leaf Blueberry - Salal
Abies amabilis / Vaccinium ovalifolium / Clintonia uniflora Forest Pacific Silver Fir / Oval-leaf Blueberry / Queen's Cup
Abies amabilis / Vaccinium ovalifolium / Tiarella trifoliata Forest Pacific Silver Fir / Oval-leaf Blueberry / Foamflower
Abies amabilis / Vaccinium ovalifolium / Xerophyllum tenax Forest Pacific Silver Fir / Oval-leaf Blueberry / Beargrass
Abies amabilis / Vaccinium ovalifolium Forest Pacific Silver Fir / Oval-leaf Blueberry
Acer circinatum / Oplopanax horridus - Rubus spectabilis Shrubland Vine Maple / Devil's-club - Salmonberry
Acer macrophyllum - Alnus rubra / Polystichum munitum - Tellima grandiflora Forest Bigleaf Maple - Red Alder / Swordfern - Fringecup Community
Alnus rubra / Petasites frigidus Forest Red Alder / Sweet Coltsfoot
Alnus rubra Cover Type Red Alder Forest
Alnus viridis ssp. sinuata / Acer circinatum Shrubland Sitka Alder - Vine Maple
Arctostaphylos uva-ursi Dwarf-shrubland Kinikinnick H
Argentina egedii - Symphyotrichum subspicatum Herbaceous Vegetation Pacific Silverweed - Douglas Aster
Calamagrostis canadensis Western Herbaceous Vegetation Bluejoint Reedgrass
Caltha leptosepala ssp. howellii herbaceous vegetation Two-flowered Marsh Marigold
Carex (aquatilis var. dives, nigricans, utriculata) - Caltha leptosepala ssp. howellii Herbaceous Vegetation [Provisional] Sedge Spp. - Two-flowered Marsh Marigold
Carex aquatilis var. dives - Carex utriculata Herbaceous Vegetation Sitka Sedge - Northwest Territory Sedge
Carex aquatilis var. dives - Comarum palustre Herbaceous Vegetation Sitka Sedge - Purple Marshlocks Herbaceous Vegetation
Carex aquatilis var. dives Herbaceous Vegetation Sitka Sedge
Carex cusickii - (Carex aquatilis var. dives) / Sphagnum spp. Herbaceous Vegetation Cusick's Sedge - (Sitka Sedge) / Sphagnum Spp.
Carex cusickii - (Menyanthes trifoliata) Herbaceous Vegetation Cusick's Sedge - (Marsh Cinquefoil)
Carex lenticularis Herbaceous Vegetation Shore Sedge
Carex lyngbyei Herbaceous Vegetation Lyngby's Sedge
Carex nigricans Herbaceous Vegetation Black Alpine Sedge
Carex spectabilis Herbaceous Vegetation Showy Sedge
Cassiope mertensiana - Phyllodoce empetriformis Dwarf-shrubland White Mountain-heather - Pink Mountain-heather
Deschampsia cespitosa - Argentina egedii Herbaceous Vegetation Tufted Hairgrass - Pacific Silverweed
Deschampsia cespitosa Herbaceous Vegetation Tufted Hairgrass
Equisetum fluviatile Herbaceous Vegetation Water Horsetail
Freshwater Tidal Surge Plain Wetland PTN Freshwater Tidal Surge Plain Wetland PTN
Kalmia microphylla - Vaccinium oxycoccos / Sphagnum spp. Dwarf-shrubland Bog-laurel - Bog Cranberry / Sphagnum spp.
Kalmia microphylla / Carex spp. - Caltha leptosepala ssp. howellii / Sphagnum spp. Dwarf-shrubland Bog-laurel / Carex Spp. - Two-flowered Marsh Marigold / Sphagnum Spp.
Ledum groenlandicum - Kalmia microphylla / Sphagnum spp. Shrubland Bog Labrador-tea - Bog-laurel / Sphagnum Spp.
Ledum groenlandicum / Carex utriculata / Sphagnum spp. Shrubland Bog Labrador-tea / Northwest Territory Sedge / Sphagnum Spp.
Low Elevation Freshwater Wetland PTN Low Elevation Freshwater Wetland PTN H
Low Elevation Freshwater Wetland WC Low Elevation Freshwater Wetland WC
Low Elevation Sphagnum Bog PTN Low Elevation Sphagnum Bog PTN
Low Elevation Sphagnum Bog WC Low Elevation Sphagnum Bog WC
Low Salinity High Marsh PTN Organic: Partly Enclosed, Backshore, Mesohaline (Marsh) PTN
Malus fusca Shrubland Western Crabapple
Menyanthes trifoliata Herbaceous Vegetation Buckbean
Mid-Elevation Freshwater Wetland WC Mid-elevation Freshwater Wetland WC
Mid-elevation Sphagnum Bog WC Mid-elevation Sphagnum Bog WC
Picea sitchensis / Cornus sericea / Lysichiton americanus Forest Sitka Spruce / Red-osier Dogwood - Yellow Skunk-cabbage
Picea sitchensis / Polystichum munitum Forest Sitka Spruce / Swordfern
Pinus contorta var. contorta / Ledum glandulosum / Sphagnum spp. Woodland Shore Pine / Glandular Labrador-tea / Sphagnum Spp.
Pinus contorta var. contorta / Ledum groenlandicum / Sphagnum spp. Woodland Shore Pine / Bog Labrador-tea / Sphagnum Spp.
Pseudotsuga menziesii - Tsuga heterophylla / Mahonia nervosa Forest Douglas-fir - Western Hemlock / Dwarf Oregongrape
Rhynchospora alba - (Vaccinium oxycoccos) / Sphagnum spp. Herbaceous Vegetation Beakrush - (Bog Cranberry) / Sphagnum Spp.
Rubus parviflorus Cover Type Thimbleberry Shrubland H
Salix (hookeriana, lucida ssp. lasiandra, sitchensis) Shrubland [Provisional] Willow Spp.
Salix spp. - Spiraea douglasii / Carex (aquatilis var. dives, obnupta, utriculata) Shrubland Willow Spp. - Douglas' Spirea / Sedge Spp. Shrubland
Sandy, Low Salinity, Low Marsh PTN Sand: Partly Enclosed, Eulittoral, Mesohaline (Marsh) PTN
Schoenoplectus (americanus, pungens) Tidal Herbaceous Vegetation [Provisional] Three-square Bulrush
Schoenoplectus acutus Herbaceous Vegetation Hard-stem Bulrush
Silty, Low Salinity, Low Marsh PTN Mixed-fine and Mud: Partly Enclosed, Eulittoral, Mesohaline (Marsh) PTN
Spiraea douglasii Shrubland Douglas' Spirea
Subalpine Freshwater Wetland WC Subalpine Freshwater Wetland WC
Thuja plicata - Tsuga heterophylla Cover Type Western Redcedar - Western Hemlock Forest
Thuja plicata Cover Type Western Redcedar Forest
Transition Zone Wetland PTN Organic, Sand, Mixed-fine or Mud: Partly Enclosed, Backshore, Oligohaline (Marsh) PTN
Tsuga heterophylla - (Thuja plicata - Alnus rubra) / Lysichiton americanus - Athyrium filix-femina Forest Western Hemlock - (Western Redcedar - Red Alder) / Skunkcabbage - Lady Fern
Tsuga heterophylla - (Thuja plicata) / Ledum groenlandicum / Sphagnum spp. Woodland Western Hemlock - (Western Redcedar) / Bog Labrador-tea / Sphagnum Spp.
Tsuga heterophylla - Pseudotsuga menziesii - (Thuja plicata) / Oplopanax horridus / Polystichum munitum Forest Western Hemlock - (Western Redcedar) / Devil's-club / Swordfern
Tsuga heterophylla / Mahonia nervosa - Gaultheria shallon Forest Western Hemlock / Dwarf Oregongrape - Salal
Tsuga heterophylla / Polystichum munitum Forest Western Hemlock / Swordfern
Tsuga heterophylla / Vaccinium ovalifolium Forest Western Hemlock / Oval-leaf Blueberry
Tsuga mertensiana - Abies amabilis / Caltha leptosepala ssp. howellii Forest Mountain Hemlock - Pacific Silver Fir / Two-flowered Marsh Marigold
Tsuga mertensiana - Abies amabilis / Elliottia pyroliflorus Woodland Mountain Hemlock - Pacific Silver Fir / Copperbush
Tsuga mertensiana - Abies amabilis / Phyllodoce empetriformis - Vaccinium deliciosum Woodland Mountain Hemlock - Pacific Silver Fir / Pink Mountain-heather - Blueleaf Huckleberry
Tsuga mertensiana - Abies amabilis / Vaccinium membranaceum - Vaccinium ovalifolium Forest Mountain Hemlock - Pacific Silver Fir / Big Huckleberry - Oval-leaf Blueberry
Tsuga mertensiana - Abies amabilis / Vaccinium membranaceum Forest Mountain Hemlock - Pacific Silver Fir / Big Huckleberry
Tsuga mertensiana - Abies amabilis / Vaccinium ovalifolium - Clintonia uniflora Forest Mountain Hemlock - Pacific Silver Fir / Oval-leaf Blueberry - Queen's Cup
Tsuga mertensiana - Abies amabilis / Vaccinium ovalifolium - Maianthemum dilatatum Forest Mountain Hemlock - Pacific Silver Fir / Oval-leaf Blueberry - False Lily-of-the-valley
Tsuga mertensiana - Abies lasiocarpa Cover Type Mountain Hemlock - Subalpine Fir Community H
Typha latifolia Western Herbaceous Vegetation Broad-leaf Cattail


Washington Natural Heritage Program - www.dnr.wa.gov/ResearchScience/Topics/NaturalHeritage/Pages/amp_nh.aspx/
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Washington Dept. of Natural Resources, PO Box 47016, Olympia, WA 98504-7016