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Shasta-Trinity National Forest · California · 11,466 acres · RoadlessArea Rule (2001)
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Observed Species (138)

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

(1)
Gymnoconia peckiana
Aaron's-beard (1)
Hypericum calycinum
American Black Bear (1)
Ursus americanus
Annual False Dandelion (1)
Agoseris heterophylla
Aquatic Gartersnake (1)
Thamnophis atratus
Bald Eagle (2)
Haliaeetus leucocephalusDL
Beaked Hazelnut (1)
Corylus cornuta
Bear Valley Buckwheat (2)
Eriogonum ursinum
Black Round Millipede (2)
Tylobolus uncigerus
Blue Field Gilia (1)
Gilia capitata
Bobcat (1)
Lynx rufus
Brewer's Peavine (1)
Lathyrus sulphureus
Brown-eyed Sunshine Lichen (1)
Vulpicida canadensis
Bulbous Bluegrass (1)
Poa bulbosa
California Bay (2)
Umbellularia californica
California Black Oak (1)
Quercus kelloggii
California Buckeye (1)
Aesculus californica
California Foothill Pine (1)
Pinus sabiniana
California Harebell (1)
Smithiastrum prenanthoides
California Honeysuckle (1)
Lonicera hispidula
California Waterleaf (1)
Hydrophyllum occidentale
California Yerba Santa (2)
Eriodictyon californicum
Cantaloupe (1)
Cucumis melo
Canyon Live Oak (1)
Quercus chrysolepis
Cascade Onion (1)
Allium cratericola
Cliff Fleabane (1)
Erigeron petrophilus
Coastal Giant Salamander (2)
Dicamptodon tenebrosus
Cole's Temperate Lichen (1)
Parmelina coleae
Common Buttonbush (1)
Cephalanthus occidentalis
Common Chickweed (1)
Stellaria media
Common Goat's-beard (1)
Aruncus dioicus
Common Greenshield Lichen (1)
Flavoparmelia caperata
Common Sandweed (1)
Athysanus pusillus
Common St. John's-wort (1)
Hypericum perforatum
Creeping Sage (2)
Salvia sonomensis
Damnation Pass Phacelia (8)
Phacelia damnationensis
Deerbrush (2)
Ceanothus integerrimus
Deltoid Balsamroot (4)
Balsamorhiza deltoidea
Douglas' Wood Beauty (1)
Drymocallis glandulosa
Douglas's Ground Squirrel (1)
Otospermophilus douglasii
Douglas-fir (2)
Pseudotsuga menziesii
Douglas-fir Cone Mushroom (1)
Strobilurus trullisatus
Durango Root (1)
Datisca glomerata
Ensatina (1)
Ensatina eschscholtzii
Fall Thistle (1)
Cirsium occidentale
Fireweed (1)
Chamaenerion angustifolium
Foxtail Brome (1)
Bromus rubens
French Broom (1)
Genista monspessulana
Giant Chainfern (2)
Woodwardia fimbriata
Greene's Blue-eyed Mary (1)
Collinsia greenei
Hairy Curtain Crust (1)
Stereum hirsutum
Hartweg's Wild Ginger (8)
Asarum hartwegii
Henderson's Shootingstar (1)
Primula hendersonii
Indian Warrior (2)
Pedicularis densiflora
Interior Live Oak (1)
Quercus wislizeni
Kellogg's Monkeyflower (3)
Diplacus kelloggii
Killdeer (1)
Charadrius vociferus
Klamath Mountain Catchfly (1)
Silene salmonacea
Lace Lipfern (2)
Myriopteris gracillima
Large Fringe-cup (1)
Tellima grandiflora
Layne's Monkeyflower (3)
Diplacus layneae
Lemmon's Catchfly (1)
Silene lemmonii
Lesser Goldfinch (1)
Spinus psaltria
Long-tube Iris (1)
Iris tenuissima
Macnab's Cypress (1)
Hesperocyparis macnabiana
Mahala-mat Ceanothus (3)
Ceanothus prostratus
Mallory's Manzanita (6)
Arctostaphylos malloryi
Mariposa Phacelia (1)
Phacelia vallicola
Mexican Catchfly (1)
Silene laciniata
Mount Eddy Lupine (1)
Lupinus croceus
Mule Deer (2)
Odocoileus hemionus
Naked Buckwheat (2)
Eriogonum nudum
Narrowleaf Swordfern (1)
Polystichum imbricans
Nuttall's Curl Moss (1)
Homalothecium nuttallii
Ojai Fritillary (4)
Fritillaria affinis
One-seed Pussy-paws (1)
Calyptridium monospermum
Oregon White Oak (1)
Quercus garryana
Osprey (2)
Pandion haliaetus
Pacific Dogwood (2)
Cornus nuttallii
Pacific Stonecrop (5)
Sedum spathulifolium
Pacific Treefrog (1)
Pseudacris regilla
Pine Violet (1)
Viola purpurea
Plumas Lupine (1)
Lupinus onustus
Poplar-loving Ringless Amanita (1)
Amanita populiphila
Purple-red Waxy Cap (1)
Hygrophorus purpurascens
Rayless Arnica (1)
Arnica discoidea
Red False Buckthorn (1)
Frangula rubra
Red Larkspur (2)
Delphinium nudicaule
Red-stem Springbeauty (1)
Claytonia rubra
Ringtail (1)
Bassariscus astutus
Scythe-leaf Onion (4)
Allium falcifolium
Sedge-leaf Whitethorn (1)
Ceanothus cuneatus
Serpentine Bittercress (2)
Cardamine pachystigma
Shasta Black Salamander (1)
Aneides iecanus
Shasta Maidenhair Fern (1)
Adiantum shastense
Shelton's Violet (3)
Viola sheltonii
Sierra Bindweed (1)
Calystegia malacophylla
Sierra Cliffbrake (5)
Pellaea brachyptera
Sierra Jewelflower (2)
Streptanthus tortuosus
Sierra Milkwort (1)
Rhinotropis cornuta
Sierra Onion (1)
Allium campanulatum
Siskiyou Mountain Woodland-star (1)
Lithophragma campanulatum
Sky-blue Beardtongue (1)
Penstemon azureus
Slender False Lupine (2)
Thermopsis gracilis
Small Scaly Clitocybe (1)
Infundibulicybe squamulosa
Solomon's-plume (2)
Maianthemum racemosum
Spreading Dogbane (1)
Apocynum androsaemifolium
Striped Racer (1)
Masticophis lateralis
Sugar Pine (2)
Pinus lambertiana
Sulphur Creek Brodiaea (1)
Brodiaea matsonii
Thimbleberry (2)
Rubus parviflorus
Tolmie's Mariposa Lily (1)
Calochortus tolmiei
Tongue Clarkia (2)
Clarkia rhomboidea
Tower-mustard (1)
Turritis glabra
Tree Poppy (3)
Dendromecon rigida
Umbellate Bastard Toad-flax (1)
Comandra umbellata
Varied-leaf Collomia (1)
Collomia heterophylla
Violet Draperia (2)
Draperia systyla
Wallace's Spikemoss (1)
Selaginella wallacei
Western Bush Bindweed (2)
Calystegia occidentalis
Western Fence Lizard (1)
Sceloporus occidentalis
Western Gray Beardtongue (1)
Penstemon laetus
Western Ladies'-tresses (1)
Spiranthes porrifolia
Western Poison-oak (1)
Toxicodendron diversilobum
Western Rattlesnake (1)
Crotalus oreganus
Western Sweet-shrub (4)
Calycanthus occidentalis
Western Toad (1)
Anaxyrus boreas
Western Wallflower (1)
Erysimum capitatum
White-flower Hawkweed (1)
Hieracium albiflorum
Whiteleaf Manzanita (1)
Arctostaphylos viscida
Yellow-spotted Millipede (3)
Harpaphe haydeniana
Yellow-staining Collomia (2)
Collomia tinctoria
a fungus (1)
Pseudoclitocybe cyathiformis
a fungus (1)
Russula cremoricolor
a fungus (1)
Morchella snyderi
blue dicks (1)
Dipterostemon capitatus
orange bonnet (1)
Pruinomycena acicula
Federally Listed Species (11)

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.

Conservancy Fairy Shrimp
Branchinecta conservatioEndangered
Northern Spotted Owl
Strix occidentalis caurinaThreatened
Vernal Pool Fairy Shrimp
Branchinecta lynchiThreatened
Vernal Pool Tadpole Shrimp
Lepidurus packardiEndangered
California Condor
Gymnogyps californianusE, XN
Monarch
Danaus plexippusProposed Threatened
North American Wolverine
Gulo gulo luscus
Northwestern Pond Turtle
Actinemys marmorataProposed Threatened
Suckley's Cuckoo Bumble Bee
Bombus suckleyiProposed Endangered
Western Spadefoot
Spea hammondiiProposed Threatened
Yellow-billed Cuckoo
Coccyzus americanus
Other Species of Concern (14)

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

Bald Eagle
Haliaeetus leucocephalus
Belding's Savannah Sparrow
Passerculus sandwichensis beldingi
Bullock's Oriole
Icterus bullockii
California Gull
Larus californicus
Channel Island Song Sparrow
Melospiza melodia graminea
Chestnut-backed Chickadee
Poecile rufescens rufescens
Clark's Grebe
Aechmophorus clarkii
Golden Eagle
Aquila chrysaetos
Nuttall's Woodpecker
Dryobates nuttallii
Oak Titmouse
Baeolophus inornatus
Rufous Hummingbird
Selasphorus rufus
Western Grebe
Aechmophorus occidentalis
Western Screech-Owl
Megascops kennicottii cardonensis
Wrentit
Chamaea fasciata
Migratory Birds of Conservation Concern (13)

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
Bullock's Oriole
Icterus bullockii
California Gull
Larus californicus
Chestnut-backed Chickadee
Poecile rufescens
Clark's Grebe
Aechmophorus clarkii
Golden Eagle
Aquila chrysaetos
Oak Titmouse
Baeolophus inornatus
Rufous Hummingbird
Selasphorus rufus
Savannah Sparrow
Passerculus sandwichensis
Song Sparrow
Melospiza melodia
Western Grebe
Aechmophorus occidentalis
Western Screech-Owl
Megascops kennicottii
Wrentit
Chamaea fasciata
Vegetation (9)

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

GNR30.1%
California Chaparral
Shrub / Shrubland · 1,137 ha
GNR24.5%
California Mixed Evergreen Forest
Tree / Conifer · 758 ha
GNR16.3%
California Mixed Conifer Forest
Tree / Conifer · 276 ha
GNR6.0%
California Foothill Black Oak and Conifer Forest
Tree / Conifer-Hardwood · 263 ha
GNR5.7%
California Mountain Chaparral
Shrub / Shrubland · 228 ha
GNR4.9%
California Foothill Mixed Oak Woodland
Tree / Hardwood · 193 ha
GNR4.2%
GNR3.1%
California Mixed Conifer Forest
Tree / Conifer · 103 ha
GNR2.2%

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Backbone Roadless Area

Shasta-Trinity National Forest, California · 11,466 acres