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

Skagit 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 - Tsuga mertensiana Cover Type Pacific Silver Fir - Mountain Hemlock Forest H
Abies amabilis / Gaultheria shallon Forest Pacific Silver Fir / Salal
Abies amabilis / Tiarella trifoliata Forest Pacific Silver Fir / Foamflower
Abies amabilis / Vaccinium ovalifolium / Clintonia uniflora Forest Pacific Silver Fir / Oval-leaf Blueberry / Queen's Cup
Abies amabilis / Vaccinium ovalifolium Forest Pacific Silver Fir / Oval-leaf Blueberry
Abies amabilis Cover Type Pacific Silver Fir Forest H
Alnus rubra / Polystichum munitum Forest Red Alder / Swordfern
Alnus rubra Cover Type Red Alder Forest
Alnus viridis ssp. sinuata Shrubland [Placeholder] Sitka Alder
Arctostaphylos uva-ursi Dwarf-shrubland Kinikinnick
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 Herbaceous Vegetation Sitka Sedge
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 obnupta - (Carex cusickii) Herbaceous Vegetation Slough Sedge - (Cusick's Sedge)
Carex utriculata Herbaceous Vegetation Northwest Territory Sedge
Cassiope mertensiana - Phyllodoce empetriformis Dwarf-shrubland White Mountain-heather - Pink Mountain-heather H
Ceratophyllum demersum Herbaceous Vegetation Coontail
Chamaecyparis nootkatensis Cover Type Alaska Yellow-cedar Forest
Coastal Spit with Native Vegetation PTN Coastal Spit with Native Vegetation PTN
Empetrum nigrum Dwarf-shrubland Black Crowberry H
Eriophorum angustifolium ssp. subarcticum var. majus / Sphagnum spp. Herbaceous Vegetation Tall Cottongrass / sphagnum
Eriophorum chamissonis - Carex interior Herbaceous Vegetation Russet Cottongrass - Inland Sedge
Festuca roemeri - Cerastium arvense - Koeleria macrantha Herbaceous Vegetation Roemer's Fescue - Field Chickweed - Prairie Junegrass
Festuca rubra - Ambrosia chamissonis Herbaceous Vegetation Red Fescue - Silver Burweed
Freshwater Tidal Surge Plain Wetland PTN Freshwater Tidal Surge Plain Wetland PTN
Juncus balticus - Festuca rubra - Carex cusickii Herbaceous Vegetation [Provisional] Baltic Rush - Red Fescue - Cusick's Sedge
Kalmia microphylla / Carex spp. - Caltha leptosepala ssp. howellii / Sphagnum spp. Dwarf-shrubland Bog-laurel / Carex Spp. - Two-flowered Marsh Marigold / Sphagnum Spp.
Larix lyallii / Vaccinium deliciosum Woodland Subalpine Larch / Blueleaf Huckleberry
Ledum groenlandicum - Kalmia microphylla / Sphagnum spp. Shrubland Bog Labrador-tea - Bog-laurel / Sphagnum Spp.
Ledum groenlandicum / Carex (cusickii, interior, utriculata) - Festuca rubra Shrubland [Provisional] Bog Labrador-tea / Carex - Red Fescue
Low Elevation Freshwater Wetland PTN Low Elevation Freshwater Wetland PTN
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
Mid-Elevation Freshwater Wetland WC Mid-elevation Freshwater Wetland WC
Mid-elevation Sphagnum Bog WC Mid-elevation Sphagnum Bog WC
North Pacific Herbaceous Bald and Bluff North Pacific Herbaceous Bald and Bluff
Nuphar lutea ssp. polysepala Herbaceous Vegetation Yellow Pond-lily
Pinus contorta / Arctostaphylos uva-ursi Forest Lodgepole Pine / Kinikinnick
Pinus contorta var. contorta / Ledum groenlandicum / Sphagnum spp. Woodland Shore Pine / Bog Labrador-tea / Sphagnum Spp.
Populus balsamifera ssp. trichocarpa - Acer macrophyllum / Symphoricarpos albus Forest Black Cottonwood - Bigleaf Maple / Common Snowberry
Populus balsamifera ssp. trichocarpa - Alnus rubra / Rubus spectabilis Forest Black Cottonwood - Red Alder / Salmonberry
Pseudotsuga menziesii - (Abies grandis, Thuja plicata) / Mahonia nervosa - Gaultheria shallon Forest Douglas-fir - (Grand Fir, Western Red-cedar) / Dwarf Oregon-grape - Salal Forest
Pseudotsuga menziesii - (Arbutus menziesii) / Aspidotis densa Woodland Douglas-fir - (Pacific Madrone) / Indian's Dream
Pseudotsuga menziesii - Arbutus menziesii / Gaultheria shallon Forest Douglas-fir - Pacific Madrone / Salal
Pseudotsuga menziesii - Arbutus menziesii / Vicia americana Forest Douglas-fir - Pacific Madrone / American Purple Vetch
Pseudotsuga menziesii - Tsuga heterophylla / Gaultheria shallon / Polystichum munitum Forest Douglas-fir - Western Hemlock / Salal / Swordfern
Pseudotsuga menziesii - Tsuga heterophylla / Gaultheria shallon Forest Douglas-fir - Western Hemlock / Salal
Pseudotsuga menziesii - Tsuga heterophylla / Polystichum munitum Forest Douglas-fir - Western Hemlock / Swordfern
Pseudotsuga menziesii - Tsuga heterophylla Cover Type Douglas-fir - Western Hemlock Forest
Pseudotsuga menziesii / Gaultheria shallon - Holodiscus discolor Forest Douglas-fir / Salal - Oceanspray
Pseudotsuga menziesii / Gaultheria shallon Forest Douglas-fir / Salal
Pseudotsuga menziesii / Rosa gymnocarpa - Holodiscus discolor Forest Douglas-fir / Baldhip Rose - Oceanspray
Pseudotsuga menziesii / Symphoricarpos albus - Holodiscus discolor Forest Douglas-fir / Common Snowberry - Oceanspray
Pseudotsuga menziesii Cover Type Douglas-fir Forest
Rhynchospora alba - (Vaccinium oxycoccos) / Sphagnum spp. Herbaceous Vegetation Beakrush - (Bog Cranberry) / Sphagnum Spp.
Salicornia virginica Herbaceous Vegetation Pickleweed
Sandy, High Salinity, Low Marsh PTN Sand: Partly Enclosed, Eulittoral, Euhaline (Marsh) PTN
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
Schoenoplectus maritimus Tidal Herbaceous Vegetation [Provisional] Seacoast Bulrush
Serpentine Wetland PTN Serpentine Wetland PTN
Silty, Low Salinity, Low Marsh PTN Mixed-fine and Mud: Partly Enclosed, Eulittoral, Mesohaline (Marsh) PTN
Spiraea douglasii / Carex aquatilis var. dives Shrubland Douglas' Spirea / Sitka Sedge
Spiraea douglasii / Carex obnupta Shrubland [Provisional] Douglas' Spirea / Slough Sedge
Spiraea douglasii Shrubland Douglas' Spirea
Thuja plicata - Tsuga heterophylla Cover Type Western Redcedar - Western Hemlock Forest H
Thuja plicata Cover Type Western Redcedar Forest
Transition Zone Wetland PTN Organic, Sand, Mixed-fine or Mud: Partly Enclosed, Backshore, Oligohaline (Marsh) PTN
Triglochin maritima - (Salicornia virginica) Herbaceous Vegetation Seaside Arrowgrass - (Pickleweed)
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 / Gaultheria shallon Forest Western Hemlock / Salal
Tsuga heterophylla / Polystichum munitum Forest Western Hemlock / Swordfern
Tsuga heterophylla / Vaccinium ovalifolium Forest Western Hemlock / Oval-leaf Blueberry
Tsuga heterophylla Cover Type Western Hemlock Forest
Tsuga mertensiana - Abies amabilis / Caltha leptosepala ssp. howellii Forest Mountain Hemlock - Pacific Silver Fir / Two-flowered Marsh Marigold
Tsuga mertensiana - Abies amabilis / Phyllodoce empetriformis - Vaccinium deliciosum Woodland Mountain Hemlock - Pacific Silver Fir / Pink Mountain-heather - Blueleaf Huckleberry
Tsuga mertensiana - Abies amabilis / Rhododendron albiflorum Forest Mountain Hemlock - Pacific Silver Fir / Cascade Azalea
Tsuga mertensiana - Abies lasiocarpa Cover Type Mountain Hemlock - Subalpine Fir Community H
Typha latifolia Western Herbaceous Vegetation Broad-leaf Cattail
Vaccinium membranaceum - Vaccinium deliciosum Dwarf-shrubland Big Huckleberry - Blueleaf Huckleberry H
Vaccinium membranaceum Cover Type Big Huckleberry Shrubland
Valeriana sitchensis - Veratrum viride Herbaceous Vegetation Sitka Valerian - Green False Hellebore H


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