Siouxon

Gifford Pinchot National Forest · Washington · 12,773 acres · RoadlessArea Rule (2001)
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Observed Species (167)

Species with confirmed research-grade observation records from iNaturalist community science data.

(1)
Hortiboletus coccyginus
(1)
Thrinaphe hargeri
(3)
Californiulus euphanus
(1)
Morchella exuberans
Aaron's-beard (1)
Hypericum calycinum
Alaska-cedar (2)
Callitropsis nootkatensis
Aleutian Maidenhair Fern (11)
Adiantum aleuticum
Alpine Blueberry (1)
Vaccinium uliginosum
Alpine Haircap Moss (1)
Polytrichastrum alpinum
Alpine Marsh Violet (1)
Viola palustris
American Black Bear (1)
Ursus americanus
American Dipper (1)
Cinclus mexicanus
American Speedwell (1)
Veronica americana
American Trailplant (1)
Adenocaulon bicolor
Angel Wings (1)
Pleurocybella porrigens
Arctic Sweet-colt's-foot (1)
Petasites frigidus
Black Cottonwood (1)
Populus trichocarpa
Blackfoot Paxillus (1)
Tapinella atrotomentosa
Bleeding Mycena (1)
Mycena haematopus
Booted Knight (1)
Tricholoma focale
Bracken Fern (1)
Pteridium aquilinum
Candy Lichen (3)
Icmadophila ericetorum
Cascade Beardtongue (1)
Penstemon serrulatus
Cascade Torrent Salamander (3)
Rhyacotriton cascadaeUR
Cascades Frog (2)
Rana cascadae
Cat-tonque Liverwort (2)
Conocephalum salebrosum
Chinook Salmon (1)
Oncorhynchus tshawytscha
Clustered Collybia (1)
Connopus acervatus
Coastal Brookfoam (3)
Boykinia occidentalis
Coastal Cutbow (1)
Oncorhynchus mykiss × clarkii
Coastal Cutthroat Trout (1)
Oncorhynchus clarkiiDL
Coastal Hedge-nettle (1)
Stachys chamissonis
Coastal Tailed Frog (1)
Ascaphus truei
Coho Salmon (1)
Oncorhynchus kisutch
Columbian Lily (2)
Lilium columbianum
Common Goat's-beard (4)
Aruncus dioicus
Common Speedwell (1)
Veronica officinalis
Common St. John's-wort (1)
Hypericum perforatum
Common Wintergreen (1)
Chimaphila umbellata
Cow-parsnip (1)
Heracleum maximum
Deer Fern (5)
Struthiopteris spicant
Devil's-club (11)
Oplopanax horridus
Dog Vomit Slime Mold (3)
Fuligo septica
Douglas' Spiraea (1)
Spiraea douglasii
Douglas' Squirrel (1)
Tamiasciurus douglasii
Douglas-fir (4)
Pseudotsuga menziesii
Ensatina (1)
Ensatina eschscholtzii
Evergreen Blackberry (1)
Rubus laciniatus
False Lily-of-the-Valley (5)
Maianthemum dilatatum
Fireweed (4)
Chamaenerion angustifolium
Five-leaf Dwarf Bramble (1)
Rubus pedatus
Fly Amanita (1)
Amanita muscaria
Gassy Webcap (1)
Cortinarius traganus
Ghost Pipe (5)
Monotropa uniflora
Giant Fawnlily (1)
Erythronium oregonum
Giant Pinedrops (1)
Pterospora andromedea
Greater Red Indian-paintbrush (1)
Castilleja miniata
Greene's Mountain-ash (1)
Sorbus scopulina
Hairy Woodpecker (1)
Leuconotopicus villosus
Harsh Indian-paintbrush (1)
Castilleja hispida
Lace Foamflower (9)
Tiarella trifoliata
Lanceleaf Arnica (2)
Arnica lanceolata
Lanky Moss (2)
Rhytidiadelphus loreus
Large Hammockweaver (1)
Pimoa altioculata
Lichen Agaric (1)
Lichenomphalia ericetorum
Licorice Fern (4)
Polypodium glycyrrhiza
Lobster Mushroom (9)
Hypomyces lactifluorum
Longleaf Oregon-grape (9)
Berberis nervosa
Lung Lichen (1)
Lobaria pulmonaria
Malone Jumping-slug (2)
Hemphillia malonei
Mannered Monkeyflower (1)
Erythranthe decora
Marsh Valerian (4)
Valeriana sitchensis
Menzies' Wintergreen (1)
Chimaphila menziesii
Mertens' Coralroot (2)
Corallorhiza mertensiana
Mertens' Saxifrage (1)
Saxifraga mertensiana
New World Dyer's Polypore (1)
Phaeolus hispidoides
Northern Pacific Jumping Mouse (2)
Zapus trinotatus
Northern Red Belt (1)
Fomitopsis mounceae
Northwestern Gartersnake (1)
Thamnophis ordinoides
Oceanspray (2)
Holodiscus discolor
Oldgrowth Specklebelly Lichen (1)
Pseudocyphellaria rainierensis
Oregon Beaked Moss (1)
Kindbergia oregana
Oregon Woodsorrel (5)
Oxalis oregana
Oso-berry (1)
Oemleria cerasiformis
Pacific Bananaslug (2)
Ariolimax columbianus
Pacific Bleedingheart (7)
Dicentra formosa
Pacific Mistletoe (1)
Phoradendron villosum
Pacific Oak Fern (1)
Gymnocarpium disjunctum
Pacific Yew (2)
Taxus brevifolia
Pearly Everlasting (3)
Anaphalis margaritacea
Peppery Bolete (2)
Chalciporus piperatus
Piggyback Plant (1)
Tolmiea menziesii
Pipecleaner Moss (1)
Rhytidiopsis robusta
Purple Foxglove (4)
Digitalis purpurea
Purplish Amanita (1)
Amanita porphyria
Rainbow Trout or Steelhead (4)
Oncorhynchus mykiss
Red Huckleberry (5)
Vaccinium parvifolium
Ribbed Splashcup (1)
Cyathus striatus
Robust Lancetooth Snail (2)
Haplotrema vancouverense
Rocky Mountain Goat (1)
Oreamnos americanus
Rough-skinned Newt (1)
Taricha granulosa
Ruffed Grouse (1)
Bonasa umbellus
Salal (8)
Gaultheria shallon
Salmonberry (6)
Rubus spectabilis
Scarletback Taildropper Slug (1)
Prophysaon vanattae
Scouler's Corydalis (1)
Corydalis scouleri
Siberian Springbeauty (2)
Claytonia sibirica
Single-flowered Clintonia (1)
Clintonia uniflora
Slender Wintergreen (1)
Gaultheria ovatifolia
Smith's Fairybells (1)
Prosartes smithii
Snakeskin Liverwort (2)
Conocephalum conicum
Spreading Woodfern (1)
Dryopteris expansa
Stairstep Moss (4)
Hylocomium splendens
Subarctic Ladyfern (2)
Athyrium filix-femina
Tailed Kittentails (1)
Veronica missurica
Thimbleberry (1)
Rubus parviflorus
Turkey Tail (1)
Trametes versicolor
Twinflower (2)
Linnaea borealis
Vanilla-leaf (3)
Achlys triphylla
Varied Thrush (1)
Ixoreus naevius
Vine Maple (2)
Acer circinatum
Wall-lettuce (1)
Mycelis muralis
Wapiti (1)
Cervus canadensis
Western Columbine (5)
Aquilegia formosa
Western Dwarf Dogwood (9)
Cornus unalaschkensis
Western Grisette (2)
Amanita pachycolea
Western Hemlock (5)
Tsuga heterophylla
Western Red-Backed Salamander (1)
Plethodon vehiculum
Western Red-cedar (2)
Thuja plicata
Western Rockslater (1)
Ligidium gracile
Western Swordfern (8)
Polystichum munitum
Western Toad (4)
Anaxyrus boreas
Western Trillium (5)
Trillium ovatum
Western Turkeybeard (3)
Xerophyllum tenax
Western cauliflower mushroom (2)
Sparassis radicata
White Inside-out-flower (2)
Vancouveria hexandra
Wild Turkey (1)
Meleagris gallopavo
Winter Chanterelle (2)
Craterellus tubaeformis
Wood Rose (2)
Rosa gymnocarpa
Woodland Beardtongue (2)
Nothochelone nemorosa
Yellow-spotted Millipede (10)
Harpaphe haydeniana
a fungus (2)
Laetiporus conifericola
a fungus (1)
Donadinia nigrella
a fungus (1)
Dacrymyces chrysospermus
a fungus (1)
Clavulinopsis laeticolor
a fungus (1)
Gomphidius smithii
a fungus (1)
Phlebia radiata
a fungus (1)
Polycephalomyces tomentosus
a fungus (2)
Cantharellus formosus
a fungus (1)
Rhytisma arbuti
a fungus (1)
Stropharia ambigua
a fungus (1)
Calyptospora ornamentalis
a fungus (1)
Tolypocladium capitatum
a fungus (2)
Boletus fibrillosus
a fungus (1)
Aureoboletus mirabilis
a fungus (1)
Tricholoma murrillianum
a fungus (1)
Xerocomellus atropurpureus
a fungus (1)
Amanita pantherinoides
a fungus (1)
Chlorociboria aeruginosa
a fungus (2)
Gomphus clavatus
a fungus (1)
Gymnopilus punctifolius
a fungus (1)
Ganoderma oregonense
a fungus (1)
Hydnum oregonense
a fungus (1)
Fomitopsis ochracea
a fungus (1)
Exobasidium parvifolii
greater bird's-foot-trefoil (1)
Lotus pedunculatus
Federally Listed Species (8)

Species identified by the U.S. Fish and Wildlife Service as potentially occurring within this area based on range and habitat data. These designations do not indicate confirmed presence — they identify habitat where agency actions may require consultation under the Endangered Species Act.

Northern Spotted Owl
Strix occidentalis caurinaThreatened
Bull Trout
Salvelinus confluentus
Gray Wolf
Canis lupus
Marbled Murrelet
Brachyramphus marmoratus
Monarch
Danaus plexippusProposed Threatened
North American Wolverine
Gulo gulo luscus
Suckley's Cuckoo Bumble Bee
Bombus suckleyiProposed Endangered
Yellow-billed Cuckoo
Coccyzus americanus
Other Species of Concern (6)

Species identified by the U.S. Fish and Wildlife Service as potentially occurring based on range and habitat data.

Bald Eagle
Haliaeetus leucocephalus
Chestnut-backed Chickadee
Poecile rufescens rufescens
Evening Grosbeak
Coccothraustes vespertinus
Olive-sided Flycatcher
Contopus cooperi
Rufous Hummingbird
Selasphorus rufus
Western Grebe
Aechmophorus occidentalis
Migratory Birds of Conservation Concern (6)

Birds of conservation concern identified by the U.S. Fish and Wildlife Service as potentially occurring based on range data. These species may warrant additional consideration under the Migratory Bird Treaty Act.

Bald Eagle
Haliaeetus leucocephalus
Chestnut-backed Chickadee
Poecile rufescens
Evening Grosbeak
Coccothraustes vespertinus
Olive-sided Flycatcher
Contopus cooperi
Rufous Hummingbird
Selasphorus rufus
Western Grebe
Aechmophorus occidentalis
Vegetation (6)

Composition from LANDFIRE 2024 EVT spatial analysis. Ecosystems classified per NatureServe Terrestrial Ecological Systems.

Pacific Northwest Dry Douglas-fir Forest
Tree / Conifer · 2,150 ha
GNR41.6%
Pacific Northwest Dry Silver Fir Forest
Tree / Conifer · 1,570 ha
GNR30.4%
GNR9.7%
GNR9.7%
Southern Vancouverian Lowland Ruderal Grassland
Herb / Exotic Herbaceous · 287 ha
5.6%
Pacific Northwest Mountain Shrubland
Shrub / Shrubland · 73 ha
GNR1.4%

Siouxon

Siouxon Roadless Area

Gifford Pinchot National Forest, Washington · 12,773 acres