South Fork

Shasta-Trinity National Forest · California · 16,786 acres · RoadlessArea Rule (2001)
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Observed Species (322)

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

Lassicus Lupine (4)
Lupinus constanceiEndangered
(1)
Gymnotelium blasdaleanum
(1)
Tolmiea diplomenziesii
(2)
Abies grandis × concolor
(2)
Paeromopus angusticeps
(1)
Psathyrella frustulenta
Aaron's-beard (1)
Hypericum calycinum
Acorn Woodpecker (1)
Melanerpes formicivorus
American Black Bear (2)
Ursus americanus
American Dipper (1)
Cinclus mexicanus
American Goshawk (3)
Astur atricapillus
American Mink (1)
Neogale vison
American Purple Vetch (2)
Vicia americana
American Robin (1)
Turdus migratorius
American Trailplant (2)
Adenocaulon bicolor
Anna's Hummingbird (2)
Calypte anna
Apricot Jelly Fungus (1)
Guepinia helvelloides
Aquatic Gartersnake (3)
Thamnophis atratus
Arctic Sweet-colt's-foot (2)
Petasites frigidus
Arrowleaf Buckwheat (1)
Eriogonum compositum
Bald Eagle (2)
Haliaeetus leucocephalusDL
Banana Slugs (1)
Ariolimax
Band-tailed Pigeon (1)
Patagioenas fasciata
Beaked Hazelnut (1)
Corylus cornuta
Bigleaf Maple (2)
Acer macrophyllum
Black-headed Grosbeak (2)
Pheucticus melanocephalus
Black-throated Gray Warbler (1)
Setophaga nigrescens
Bleeding Mycena (1)
Mycena haematopus
Blue Field Gilia (2)
Gilia capitata
Blue-green Anise Mushroom (2)
Collybia odora
Bluegill (1)
Lepomis macrochirus
Bolander's Bedstraw (1)
Galium bolanderi
Bowl-tube Iris (1)
Iris macrosiphon
Brown Creeper (1)
Certhia americana
Bulbous Bluegrass (1)
Poa bulbosa
Bullock's Oriole (1)
Icterus bullockii
Bush Beardtongue (1)
Keckiella lemmonii
California Black Oak (1)
Quercus kelloggii
California Coffeeberry (1)
Frangula californica
California Desert-parsley (1)
Lomatium californicum
California Fawnlily (1)
Erythronium californicum
California Harebell (1)
Smithiastrum prenanthoides
California Honeysuckle (1)
Lonicera hispidula
California Kingsnake (3)
Lampropeltis californiae
California Mistmaiden (1)
Romanzoffia californica
California Mountain Kingsnake (1)
Lampropeltis zonata
California Oatgrass (1)
Danthonia californica
California Poppy (1)
Eschscholzia californica
California Red Fir (2)
Abies magnifica
California Scrub Jay (2)
Aphelocoma californica
California Toothwort (1)
Cardamine californica
California Yerba Santa (1)
Eriodictyon californicum
Canyon Creek Stonecrop (1)
Sedum paradisum
Canyon Live Oak (8)
Quercus chrysolepis
Cheatgrass (1)
Bromus tectorum
Chestnut-backed Chickadee (2)
Poecile rufescens
Clustered Lady's-slipper (9)
Cypripedium fasciculatum
Coast Manroot (1)
Marah oregana
Coccora (1)
Amanita calyptroderma
Common Pill-bug (1)
Armadillidium vulgare
Common Sagebrush Lizard (1)
Sceloporus graciosus
Common Sandweed (1)
Athysanus pusillus
Common Sharp-tailed Snake (4)
Contia tenuis
Common St. John's-wort (2)
Hypericum perforatum
Common Wintergreen (1)
Chimaphila umbellata
Common Woolly-sunflower (1)
Eriophyllum lanatum
Common Yarrow (2)
Achillea millefolium
Coyote (1)
Canis latrans
Creeping Thistle (3)
Cirsium arvense
Crevice Alumroot (1)
Heuchera micrantha
Dark-eyed Junco (4)
Junco hyemalis
Deltoid Balsamroot (1)
Balsamorhiza deltoidea
Diffuse Knapweed (1)
Centaurea diffusa
Dog Sick Slime Mould (1)
Didymium spongiosum
Douglas' Savory (1)
Clinopodium douglasii
Douglas' Squirrel (1)
Tamiasciurus douglasii
Douglas's Ground Squirrel (1)
Otospermophilus douglasii
Douglas-fir (10)
Pseudotsuga menziesii
Dwarf Purple Monkeyflower (1)
Diplacus nanus
Earth Box (1)
Geopyxis carbonaria
Eastern Warbling-Vireo (1)
Vireo gilvus
Emery Rocktripe Lichen (1)
Umbilicaria phaea
Ensatina (4)
Ensatina eschscholtzii
Evergreen Blackberry (1)
Rubus laciniatus
Eyed Violet (5)
Viola ocellata
Fairy Slipper (5)
Calypso bulbosa
Fall Thistle (4)
Cirsium occidentale
Fancy Frost Lichen (1)
Physconia americana
Fendler's Meadowrue (1)
Thalictrum fendleri
Field Pepper-grass (2)
Lepidium campestre
Fire Morel (1)
Morchella eximia
Fisher (1)
Pekania pennanti
Fragile Fern (1)
Cystopteris fragilis
Fragrant Sumac (1)
Rhus aromatica
Goldback Fern (1)
Pentagramma triangularis
Golden Chinquapin (5)
Chrysolepis chrysophylla
Golden-crowned Sparrow (1)
Zonotrichia atricapilla
Gray Fox (1)
Urocyon cinereoargenteus
Gray Lung Lichen (1)
Lobaria hallii
Great Blue Heron (1)
Ardea herodias
Green-tailed Towhee (1)
Pipilo chlorurus
Green-tongue Liverwort (1)
Marchantia polymorpha
Green-winged Teal (1)
Anas crecca
Greene's Blue-eyed Mary (1)
Collinsia greenei
Greene's Ragwort (1)
Packera greenei
Greenleaf Manzanita (1)
Arctostaphylos patula
Hairy-pink (2)
Petrorhagia dubia
Hall's Violet (1)
Viola hallii
Harvest Brodiaea (1)
Brodiaea elegans
Hayfield Tarweed (1)
Hemizonia congesta
Henderson's Shootingstar (5)
Primula hendersonii
Hermit Thrush (1)
Catharus guttatus
Hermit Warbler (1)
Setophaga occidentalis
Hooker's Mandarin (1)
Prosartes hookeri
Hooker's Pink (2)
Silene hookeri
Hutton's Vireo (1)
Vireo huttoni
Ida-may Snakelily (3)
Dichelostemma ida-maia
Incense Cedar (6)
Calocedrus decurrens
Indian Warrior (7)
Pedicularis densiflora
Ithuriel's Spear (2)
Triteleia laxa
Jelly Tooth (4)
Pseudohydnum gelatinosum
June Mushroom (1)
Gymnopus dryophilus
Juniper Haircap Moss (1)
Polytrichum juniperinum
Kellogg's Monkeyflower (1)
Diplacus kelloggii
Koch's Wolf Spider (1)
Alopecosa kochi
Large-flower Collomia (1)
Collomia grandiflora
Large-flower Yellow Fawnlily (2)
Erythronium grandiflorum
Lawn Daisy (1)
Bellis perennis
Layne's Monkeyflower (1)
Diplacus layneae
Leafless wintergreen (1)
Pyrola aphylla
Leopard Lily (1)
Lilium pardalinum
Lewis' Mock Orange (1)
Philadelphus lewisii
Licorice Fern (1)
Polypodium glycyrrhiza
Lilac Lily (6)
Lilium rubescens
Lilac Mycena (1)
Mycena pura
Long-tube Iris (2)
Iris tenuissima
Longleaf Oregon-grape (1)
Berberis nervosa
Lovely Clarkia (3)
Clarkia concinna
Lung Lichen (1)
Lobaria pulmonaria
Mad River Fleabane Daisy (1)
Erigeron maniopotamicus
Meadow Goat's-beard (1)
Tragopogon dubius
Medusa-head (1)
Taeniatherum caput-medusae
Menzies' Baby-blue-eyes (7)
Nemophila menziesii
Mertens' Coralroot (1)
Corallorhiza mertensiana
Mexican Catchfly (6)
Silene laciniata
Miner's-lettuce (1)
Claytonia perfoliata
Minute Lemon Cups (1)
Calycina citrina
Mountain Quail (1)
Oreortyx pictus
Mountain Whitethorn (4)
Ceanothus cordulatus
Mule Deer (3)
Odocoileus hemionus
Musk Monkeyflower (1)
Erythranthe moschata
Narrowleaf Milkweed (1)
Asclepias fascicularis
Narrowleaf Mule's-ears (1)
Wyethia angustifolia
Narrowleaf Owl's-clover (1)
Castilleja attenuata
Nashville Warbler (1)
Leiothlypis ruficapilla
Nearby Ground Spider (1)
Herpyllus propinquus
Nelson's Stringflower (4)
Silene nelsonii
New World Dyer's Polypore (4)
Phaeolus hispidoides
Nipple-seed Plantain (1)
Plantago major
Nordmann's Orbweaver (1)
Araneus nordmanni
North American Racer (1)
Coluber constrictor
Northern Alligator Lizard (1)
Elgaria coerulea
Northern Flicker (1)
Colaptes auratus
Northwestern Pond Turtle (10)
Actinemys marmorataProposed Threatened
Northwestern Salamander (1)
Ambystoma gracile
Ojai Fritillary (8)
Fritillaria affinis
Olive-sided Flycatcher (1)
Contopus cooperi
One-seed Pussy-paws (1)
Calyptridium monospermum
Orange Moss Agaric (1)
Rickenella fibula
Orchard Grass (1)
Dactylis glomerata
Oregon Ash (1)
Fraxinus latifolia
Oregon White Oak (10)
Quercus garryana
Oso-berry (3)
Oemleria cerasiformis
Osprey (2)
Pandion haliaetus
Pacific Bleedingheart (8)
Dicentra formosa
Pacific Coast Tick (1)
Dermacentor occidentalis
Pacific Dogwood (2)
Cornus nuttallii
Pacific Madrone (3)
Arbutus menziesii
Pacific Stonecrop (1)
Sedum spathulifolium
Pacific Treefrog (2)
Pseudacris regilla
Pallid Bat (1)
Antrozous pallidus
Phantom Orchid (3)
Cephalanthera austiniae
Pileated Woodpecker (1)
Dryocopus pileatus
Pimpled Kidney Lichen (1)
Nephroma resupinatum
Pin Clover (1)
Erodium cicutarium
Pine Siskin (2)
Spinus pinus
Pine Violet (3)
Viola purpurea
Pinemat Manzanita (1)
Arctostaphylos nevadensis
Pioneer Gooseberry (1)
Ribes lobbii
Piper's Oregon-grape (2)
Berberis aquifolium
Ponderosa Pine (1)
Pinus ponderosa
Purdy's Iris (1)
Iris purdyi
Purple Deadnettle (1)
Lamium purpureum
Purple Finch (1)
Haemorhous purpureus
Purple Milkweed (6)
Asclepias cordifolia
Rainbow Trout or Steelhead (2)
Oncorhynchus mykiss
Red Baneberry (1)
Actaea rubra
Red Clover (1)
Trifolium pratense
Red Larkspur (2)
Delphinium nudicaule
Red-breasted Sapsucker (1)
Sphyrapicus ruber
Red-shouldered Hawk (1)
Buteo lineatus
Red-stem Springbeauty (1)
Claytonia rubra
Redwood Beardtongue (5)
Keckiella corymbosa
Redwood Sideband (1)
Monadenia infumata
Ring-necked Snake (1)
Diadophis punctatus
Rosy Gomphidius (2)
Gomphidius subroseus
Roughleaf Aster (2)
Eurybia radulina
Rubber Boa (1)
Charina bottae
Ruby-crowned Kinglet (1)
Corthylio calendula
San Francisco Broomrape (1)
Aphyllon franciscanum
Saskatoon (1)
Amelanchier alnifolia
Scarlet Missionbells (4)
Fritillaria recurva
Scotch Broom (1)
Cytisus scoparius
Sculpted Puffball (1)
Calvatia sculpta
Scythe-leaf Onion (1)
Allium falcifolium
Serpentine Milkweed (2)
Asclepias solanoana
Shaggy Mane (1)
Coprinus comatus
Shelton's Violet (2)
Viola sheltonii
Short-fruit Stork's-bill (1)
Erodium brachycarpum
Short-stem Russula (1)
Russula brevipes
Sierra Gooseberry (3)
Ribes roezlii
Signal Crayfish (1)
Pacifastacus leniusculus
Silver-crown (3)
Cacaliopsis nardosmia
Siskiyou Bitterroot (1)
Lewisia cotyledon
Siskiyou False Hellebore (1)
Veratrum insolitum
Siskiyou Fritillary (3)
Fritillaria glauca
Slender Bog Orchid (1)
Platanthera stricta
Slender Catchfly (1)
Silene greenei
Slender Hareleaf (2)
Lagophylla ramosissima
Small-flower Tonella (2)
Tonella tenella
Small-head Tarweed (1)
Hemizonella minima
Snowberry (1)
Symphoricarpos albus
Snowplant (1)
Sarcodes sanguinea
Soft Brome (1)
Bromus hordeaceus
Soft-haired Snowberry (1)
Symphoricarpos mollis
Solomon's-plume (1)
Maianthemum racemosum
Song Sparrow (2)
Melospiza melodia
Sooty Grouse (1)
Dendragapus fuliginosus
Sour Clover (1)
Trifolium fucatum
Southern Alligator Lizard (1)
Elgaria multicarinata
Spotted Coralroot (4)
Corallorhiza maculata
Spotted Owl (1)
Strix occidentalis
Spotted Sandpiper (1)
Actitis macularius
Spotted Towhee (2)
Pipilo maculatus
Spreading Dogbane (1)
Apocynum androsaemifolium
Spring Coccora (1)
Amanita vernicoccora
Sulphur Shelf (4)
Laetiporus gilbertsonii
Sulphur Tuft (2)
Hypholoma fasciculare
Tall Groundsel (1)
Senecio serra
Tall Oatgrass (1)
Arrhenatherum elatius
Thickleaf Bird's-foot-trefoil (1)
Hosackia crassifolia
Threadleaf Beardtongue (1)
Penstemon filiformis
Thyme-leaf Broomspurge (1)
Euphorbia serpillifolia
Tolmie's Mariposa Lily (8)
Calochortus tolmiei
Townsend's Big-eared Bat (1)
Corynorhinus townsendii
Tracy's Sanicle (1)
Sanicula tracyi
Umbrella Plant (3)
Darmera peltata
Veiled Polypore (1)
Cryptoporus volvatus
Vinegarweed (1)
Trichostema lanceolatum
Wapiti (1)
Cervus canadensis
Washington Lily (1)
Lilium washingtonianum
Wavyleaf Soap-plant (7)
Chlorogalum pomeridianum
Western Fence Lizard (6)
Sceloporus occidentalis
Western Flycatcher (1)
Empidonax difficilis
Western Forest Scorpion (1)
Uroctonus mordax
Western Gray Squirrel (1)
Sciurus griseus
Western Grisette (1)
Amanita pachycolea
Western Lynx Spider (1)
Oxyopes scalaris
Western Rattlesnake (2)
Crotalus oreganus
Western Redbud (2)
Cercis occidentalis
Western Screech-Owl (1)
Megascops kennicottii
Western Skink (3)
Plestiodon skiltonianus
Western Tanager (1)
Piranga ludoviciana
Western Toad (2)
Anaxyrus boreas
Western Vervain (1)
Verbena lasiostachys
Western Wood-Pewee (1)
Contopus sordidulus
White Barrel Bird's Nest (1)
Nidula niveotomentosa
White Chanterelle (2)
Cantharellus subalbidus
White Fir (2)
Abies concolor
White Toadshade (1)
Trillium albidum
White Triteleia (3)
Triteleia hyacinthina
White-crowned Sparrow (1)
Zonotrichia leucophrys
White-flower Hawkweed (1)
Hieracium albiflorum
White-veined Wintergreen (1)
Pyrola picta
Wild Turkey (1)
Meleagris gallopavo
Willowleaf Lettuce (1)
Lactuca saligna
Wilson's Warbler (1)
Cardellina pusilla
Wood Rose (1)
Rosa gymnocarpa
Woodland Strawberry (3)
Fragaria vesca
Wormskjold's Clover (1)
Trifolium wormskioldii
Yellow Dung Mushroom (1)
Bolbitius titubans
Yellow Earth Tongue (1)
Spathularia flavida
Yellow Star-thistle (2)
Centaurea solstitialis
Yellow Triteleia (1)
Triteleia crocea
Yellow-staining Agaricus (1)
Agaricus xanthodermus
Yellow-staining Milk Cap (1)
Lactarius xanthogalactus
Yuma Myotis (1)
Myotis yumanensis
a blind springtail (1)
Hymenaphorura cocklei
a fungus (2)
Psathyrella longipes
a fungus (1)
Atheniella aurantiidisca
a fungus (1)
Atheniella flavoalba
a fungus (1)
Caloscypha fulgens
a fungus (1)
Craterellus calicornucopioides
a fungus (1)
Floccularia albolanaripes
a fungus (1)
Guepiniopsis alpina
a fungus (1)
Gymnopilus punctifolius
a fungus (1)
Hericium erinaceus
a fungus (1)
Laccaria amethysteo-occidentalis
a fungus (1)
Lactarius rubrilacteus
a fungus (1)
Leptoporus mollis
a fungus (1)
Mucronella calva
a fungus (1)
Mycena purpureofusca
a fungus (1)
Porodaedalea pini
a fungus (1)
Stropharia ambigua
a fungus (1)
Suillus pungens
a harvestman (1)
Leiobunum exilipes
blue dicks (2)
Dipterostemon capitatus
turkey mullein (1)
Croton setiger
Federally Listed Species (10)

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
Yellow-billed Cuckoo
Coccyzus americanus
Other Species of Concern (8)

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

Bald Eagle
Haliaeetus leucocephalus
Cassin's Finch
Haemorhous cassinii
Chestnut-backed Chickadee
Poecile rufescens rufescens
Clark's Grebe
Aechmophorus clarkii
Evening Grosbeak
Coccothraustes vespertinus
Olive-sided Flycatcher
Contopus cooperi
Western Screech-Owl
Megascops kennicottii cardonensis
Wrentit
Chamaea fasciata
Migratory Birds of Conservation Concern (8)

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
Cassin's Finch
Haemorhous cassinii
Chestnut-backed Chickadee
Poecile rufescens
Clark's Grebe
Aechmophorus clarkii
Evening Grosbeak
Coccothraustes vespertinus
Olive-sided Flycatcher
Contopus cooperi
Western Screech-Owl
Megascops kennicottii
Wrentit
Chamaea fasciata
Vegetation (9)

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

California Mixed Evergreen Forest
Tree / Conifer · 3,742 ha
GNR55.1%
California Mixed Conifer Forest
Tree / Conifer · 1,665 ha
GNR24.5%
California Mountain Chaparral
Shrub / Shrubland · 539 ha
GNR7.9%
California Chaparral
Shrub / Shrubland · 204 ha
GNR3.0%
GNR2.4%
California Foothill Mixed Oak Woodland
Tree / Hardwood · 111 ha
GNR1.6%
California Mixed Conifer Forest
Tree / Conifer · 109 ha
GNR1.6%
G20.0%

South Fork

South Fork Roadless Area

Shasta-Trinity National Forest, California · 16,786 acres