Trail Lake

Lassen National Forest · California · 1,124 acres · RoadlessArea Rule (2001)
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Observed Species (210)

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

(3)
Galeropsis polytrichoides
(2)
Leptobunus
(2)
Hyalella dentata
(3)
Californiulus dorsovittatus
(2)
Castilleja lassenensis
(1)
Golovinomyces malvacearum
Alpine Blueberry (2)
Vaccinium uliginosum
Alpine Gentian (4)
Gentiana newberryi
American Badger (2)
Taxidea taxus
American Black Bear (23)
Ursus americanus
American Pika (3)
Ochotona princeps
Anderson's Thistle (4)
Cirsium andersonii
Baker's Violet (2)
Viola bakeri
Bald Eagle (4)
Haliaeetus leucocephalusDL
Bear Valley Buckwheat (1)
Eriogonum ursinum
Big Western Juniper (1)
Juniperus grandis
Black-backed Woodpecker (2)
Picoides arcticus
Black-footed Tightcoil Snail (1)
Pristiloma chersinella
Bloomer's Goldenweed (1)
Ericameria bloomeri
Bobcat (3)
Lynx rufus
Bracken Fern (4)
Pteridium aquilinum
Brewer's Golden-aster (1)
Doellingeria breweri
Brewer's Monkeyflower (2)
Erythranthe breweri
Brewer's Mountain-heath (6)
Phyllodoce breweri
Brown Creeper (1)
Certhia americana
Brown-eyed Wolf Lichen (1)
Letharia columbiana
Bufflehead (6)
Bucephala albeola
Bull Elephant's-head (2)
Pedicularis groenlandica
Bull Thistle (1)
Cirsium vulgare
California Red Fir (2)
Abies magnifica
California Rockrose (3)
Helianthella californica
California Stickseed (3)
Hackelia californica
Californian False Hellebore (6)
Veratrum californicum
Canada Goose (3)
Branta canadensis
Canada Jay (5)
Perisoreus canadensis
Cascade Strawberry (1)
Fragaria cascadensis
Clark's Nutcracker (1)
Nucifraga columbiana
Cobwebby Indian-paintbrush (1)
Castilleja arachnoidea
Colorado Spiny Tailed Fairy Shrimp (1)
Streptocephalus coloradensis
Common Coral Slime (1)
Ceratiomyxa fruticulosa
Common Cord Moss (1)
Funaria hygrometrica
Common Gartersnake (3)
Thamnophis sirtalis
Common Merganser (3)
Mergus merganser
Common Raven (9)
Corvus corax
Common Sagebrush Lizard (3)
Sceloporus graciosus
Common Wintergreen (1)
Chimaphila umbellata
Common Yarrow (3)
Achillea millefolium
Cougar (1)
Puma concolor
Coyote (7)
Canis latrans
Cutleaf Owl's-clover (1)
Castilleja lacera
Dark-eyed Junco (1)
Junco hyemalis
Davis' knotweed (3)
Koenigia davisiae
Davy's Sedge (1)
Carex davyi
Deadly Galerina (1)
Galerina marginata
Desert Speckled Dace (1)
Rhinichthys nevadensis
Douglas' Spiraea (7)
Spiraea douglasii
Douglas' Squirrel (13)
Tamiasciurus douglasii
Dwarf False Ground-cherry (1)
Leucophysalis nana
Earth Box (1)
Geopyxis carbonaria
English Sundew (2)
Drosera anglica
False Puffball (1)
Reticularia lycoperdon
Few-flowered Oatgrass (1)
Danthonia unispicata
Fine Rockwool Lichen (1)
Pseudephebe pubescens
Fireweed (4)
Chamaenerion angustifolium
Forest Disc Snail (1)
Discus whitneyi
Giant Pinedrops (5)
Pterospora andromedea
Golden-mantled Ground Squirrel (9)
Callospermophilus lateralis
Green Rock-posy Lichen (1)
Rhizoplaca melanophthalma
Green-tongue Liverwort (7)
Marchantia polymorpha
Greenleaf Manzanita (3)
Arctostaphylos patula
Hooded Ladies'-tresses (1)
Spiranthes romanzoffiana
Humboldt's Flying Squirrel (7)
Glaucomys oregonensis
Jeffrey's Pine (2)
Pinus jeffreyi
Jepson's Monkeyflower (5)
Diplacus jepsonii
Johnson's Tufted Jumping Spider (1)
Phidippus johnsoni
Lace Lipfern (3)
Myriopteris gracillima
Lanceleaf Springbeauty (6)
Claytonia lanceolata
Large-flower Wire-lettuce (4)
Stephanomeria lactucina
Leichtlin's Mariposa Lily (10)
Calochortus leichtlinii
Leopard Lily (3)
Lilium pardalinum
Little Elephant's-head (3)
Pedicularis attollens
Lobb's Fiddleleaf (4)
Nama lobbii
Lodgepole Chipmunk (1)
Neotamias speciosus
Lodgepole Pine (6)
Pinus contorta
Long-toed Salamander (3)
Ambystoma macrodactylum
Mahala-mat Ceanothus (6)
Ceanothus prostratus
Marsh Ramshorn (2)
Planorbella trivolvis
Marshmallow Polypore (1)
Spongiporus leucospongia
Menzies' Wintergreen (1)
Chimaphila menziesii
Milky Kelloggia (2)
Kelloggia galioides
Mountain Chickadee (2)
Poecile gambeli
Mountain Hemlock (3)
Tsuga mertensiana
Mountain Holly Fern (1)
Polystichum scopulinum
Mountain Whitethorn (1)
Ceanothus cordulatus
Mt. Hood Pussy-paws (1)
Calyptridium umbellatum
Mud Sedge (1)
Carex limosa
Mule Deer (11)
Odocoileus hemionus
Musk Monkeyflower (2)
Erythranthe moschata
Naked Buckwheat (1)
Eriogonum nudum
Narrow-flower Lupine (2)
Lupinus angustiflorus
Newberry's Beardtongue (16)
Penstemon newberryi
North American Porcupine (1)
Erethizon dorsatum
Northern Alligator Lizard (1)
Elgaria coerulea
Northern Flicker (1)
Colaptes auratus
Northern Red Belt (1)
Fomitopsis mounceae
Oceanspray (3)
Holodiscus discolor
One-flower Bleedinghearts (6)
Dicentra uniflora
One-flower Gentian (1)
Gentianopsis simplex
One-seed Pussy-paws (3)
Calyptridium monospermum
One-sided Wintergreen (1)
Orthilia secunda
Orange Moss Agaric (1)
Rickenella fibula
Osprey (2)
Pandion haliaetus
Pacific Marten (2)
Martes caurina
Pacific Treefrog (34)
Pseudacris regilla
Pine Violet (3)
Viola purpurea
Pinemat Manzanita (9)
Arctostaphylos nevadensis
Pinewoods Lousewort (4)
Pedicularis semibarbata
Ponderosa Pine (1)
Pinus ponderosa
Primrose Monkeyflower (16)
Erythranthe primuloides
Proszynski's Jumping Spider (1)
Evarcha proszynskii
Pulsifer's Milkvetch (2)
Astragalus pulsiferae
Purple Missionbells (1)
Fritillaria atropurpurea
Pygmy Nuthatch (1)
Sitta pygmaea
Quaking Aspen (2)
Populus tremuloides
Rainbow Trout or Steelhead (2)
Oncorhynchus mykiss
Red Baneberry (1)
Actaea rubra
Red Crossbill (2)
Loxia curvirostra
Red Fox (1)
Vulpes vulpes
Red Sierra Onion (4)
Allium obtusum
Red-tailed Hawk (4)
Buteo jamaicensis
Rose Meadowsweet (8)
Spiraea splendens
Rubber Boa (1)
Charina bottae
Sacramento Cycladenia (1)
Cycladenia humilis
Sand Violet (6)
Viola adunca
Sandhill Crane (4)
Antigone canadensis
Scarlet Skyrocket (1)
Ipomopsis aggregata
Sculpted Puffball (1)
Calvatia sculpta
Self-heal (2)
Prunella vulgaris
Shasta Clover (5)
Trifolium productum
Sierra Chinquapin (7)
Chrysolepis sempervirens
Sierra Onion (2)
Allium campanulatum
Signal Crayfish (1)
Pacifastacus leniusculus
Slender Triteleia (1)
Triteleia montana
Slender Woodland-star (1)
Lithophragma tenellum
Slender-sepal Marsh-marigold (3)
Caltha leptosepala
Slim-stem Beardtongue (3)
Penstemon gracilentus
Small Scaly Clitocybe (1)
Infundibulicybe squamulosa
Small-flower Beardtongue (1)
Penstemon procerus
Smooth White Violet (3)
Viola macloskeyi
Snowplant (18)
Sarcodes sanguinea
Snowshoe Hare (2)
Lepus americanus
Spotted Coralroot (2)
Corallorhiza maculata
Spotted Sandpiper (1)
Actitis macularius
Spreading Dogbane (11)
Apocynum androsaemifolium
Spreading Phlox (1)
Phlox diffusa
Star Jelly (1)
Nostoc commune
Starry Ladies'-Tresses (1)
Spiranthes × stellata
Steller's Jay (5)
Cyanocitta stelleri
Stream Trefoil (2)
Hosackia oblongifolia
Sugarstick (2)
Allotropa virgata
Swamp Whiteheads (1)
Angelica capitellata
Tall White Bog Orchid (4)
Platanthera dilatata
Terrestrial Gartersnake (2)
Thamnophis elegans
Three-leaf Bitterroot (1)
Lewisia triphylla
Thymeleaf Speedwell (1)
Veronica serpyllifolia
Tinker's-penny (1)
Hypericum anagalloides
Tobacco Ceanothus (1)
Ceanothus velutinus
Toothed Wintergreen (1)
Pyrola dentata
Turkey Vulture (1)
Cathartes aura
Utah Serviceberry (1)
Amelanchier utahensis
Veiled Polypore (4)
Cryptoporus volvatus
Virginia Strawberry (8)
Fragaria virginiana
Wapatum Arrowhead (3)
Sagittaria cuneata
Watershield (1)
Brasenia schreberi
Wavyleaf Indian-paintbrush (2)
Castilleja applegatei
Western Columbine (4)
Aquilegia formosa
Western False Asphodel (1)
Triantha occidentalis
Western Fence Lizard (1)
Sceloporus occidentalis
Western Forest Scorpion (1)
Uroctonus mordax
Western Gray Squirrel (2)
Sciurus griseus
Western Joepye-weed (2)
Ageratina occidentalis
Western Juniper (4)
Juniperus occidentalis
Western Marsh Cudweed (1)
Gnaphalium palustre
Western Porterella (1)
Porterella carnosula
Western Tanager (3)
Piranga ludoviciana
Western Toad (13)
Anaxyrus boreas
Western White Pine (10)
Pinus monticola
Western Wood-Pewee (2)
Contopus sordidulus
White Fir (1)
Abies concolor
White-breasted Nuthatch (1)
Sitta carolinensis
White-headed Woodpecker (1)
Leuconotopicus albolarvatus
White-stem Pondweed (1)
Potamogeton praelongus
White-stem Raspberry (1)
Rubus leucodermis
White-veined Wintergreen (2)
Pyrola picta
Wolf Lichen (3)
Letharia vulpina
Yellow-bellied Marmot (2)
Marmota flaviventris
Yellow-rumped Warbler (1)
Setophaga coronata
Yuma Myotis (1)
Myotis yumanensis
a fungus (1)
Lactarius atrobadius
a fungus (2)
Guepiniopsis alpina
a fungus (1)
Inocybe subexilis
a fungus (1)
Inosperma calamistratum
a fungus (1)
Coprinopsis stercorea
a fungus (2)
Neolentinus ponderosus
a fungus (1)
Rickenella mellea
a jumping spider (3)
Pelegrina aeneola
a jumping spider (8)
Habronattus hirsutus
a jumping spider (1)
Habronattus americanus
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
Slender Orcutt Grass
Orcuttia tenuisThreatened
Whitebark Pine
Pinus albicaulisThreatened
California Condor
Gymnogyps californianusE, XN
California Spotted Owl
Strix occidentalis occidentalis
Gray Wolf
Canis lupus
Monarch
Danaus plexippusProposed Threatened
North American Wolverine
Gulo gulo luscus
Northwestern Pond Turtle
Actinemys marmorataProposed Threatened
Suckley's Cuckoo Bumble Bee
Bombus suckleyiProposed Endangered
Other Species of Concern (7)

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

Bald Eagle
Haliaeetus leucocephalus
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Evening Grosbeak
Coccothraustes vespertinus
Hermit Warbler
Setophaga occidentalis
Olive-sided Flycatcher
Contopus cooperi
Western Grebe
Aechmophorus occidentalis
Migratory Birds of Conservation Concern (7)

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
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Evening Grosbeak
Coccothraustes vespertinus
Hermit Warbler
Setophaga occidentalis
Olive-sided Flycatcher
Contopus cooperi
Western Grebe
Aechmophorus occidentalis
Vegetation (5)

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

California High Mountain Meadow
Herb / Grassland · 245 ha
GNR54.0%
California Red Fir Forest
Tree / Conifer · 102 ha
GNR22.4%
GNR2.5%
Sierra Nevada Lodgepole Pine Forest
Tree / Conifer · 11 ha
GNR2.4%

Trail Lake

Trail Lake Roadless Area

Lassen National Forest, California · 1,124 acres