Timbered Crater

Lassen National Forest · California · 4,096 acres · RoadlessArea Rule (2001)
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Observed Species (283)

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

(1)
Pyrofomes juniperinus
(4)
Brodiaea rosea
(1)
Navarretia intertexta
Acorn Woodpecker (5)
Melanerpes formicivorus
American Barn Owl (1)
Tyto furcata
American Bird's-foot-trefoil (2)
Acmispon americanus
American Black Bear (4)
Ursus americanus
American Bullfrog (1)
Lithobates catesbeianus
American Coot (2)
Fulica americana
American Mink (1)
Neogale vison
American Purple Vetch (1)
Vicia americana
American Robin (2)
Turdus migratorius
American Sickle (1)
Astragalus curvicarpus
American White Pelican (3)
Pelecanus erythrorhynchos
Anna's Hummingbird (1)
Calypte anna
Antelope Bitterbrush (3)
Purshia tridentata
Arrowleaf Balsamroot (3)
Balsamorhiza sagittata
Ash-throated Flycatcher (2)
Myiarchus cinerascens
Ass (1)
Equus asinus
Bacigalup's Downingia (2)
Downingia bacigalupii
Baker's Cypress (4)
Hesperocyparis bakeri
Bald Eagle (3)
Haliaeetus leucocephalusDL
Basalt Milkvetch (3)
Astragalus filipes
Beckwith's Violet (2)
Viola beckwithii
Big Sagebrush (5)
Artemisia tridentata
Bitter Cherry (2)
Prunus emarginata
Black Medic (1)
Medicago lupulina
Black-crowned Night Heron (1)
Nycticorax nycticorax
Black-headed Grosbeak (1)
Pheucticus melanocephalus
Black-tailed Jackrabbit (1)
Lepus californicus
Boggs Lake Dodder (1)
Cuscuta howelliana
Bracken Fern (2)
Pteridium aquilinum
Bractless Hedge-hyssop (1)
Gratiola ebracteata
Brown Creeper (1)
Certhia americana
Brown-eyed Wolf Lichen (4)
Letharia columbiana
Bufflehead (2)
Bucephala albeola
Bull Thistle (2)
Cirsium vulgare
Bullock's Oriole (2)
Icterus bullockii
Bushtit (1)
Psaltriparus minimus
California Black Oak (3)
Quercus kelloggii
California Blue-eyed-grass (1)
Sisyrinchium bellum
California Coffeeberry (2)
Frangula californica
California Mountainmint (4)
Pycnanthemum californicum
California Rayless Fleabane (1)
Erigeron inornatus
California Scrub Jay (3)
Aphelocoma californica
California Yerba Santa (1)
Eriodictyon californicum
Canada Goose (1)
Branta canadensis
Canada Mint (1)
Mentha canadensis
Chaparral Honeysuckle (3)
Lonicera interrupta
Choke Cherry (4)
Prunus virginiana
Clasping Pepper-grass (2)
Lepidium perfoliatum
Clasping-leaf Dogbane (3)
Apocynum cannabinum
Climbing Nightshade (2)
Solanum dulcamara
Common Deadnettle (2)
Lamium amplexicaule
Common Goldeneye (2)
Bucephala clangula
Common Merganser (2)
Mergus merganser
Common Monkeyflower (2)
Erythranthe guttata
Common Mullein (1)
Verbascum thapsus
Common Muskrat (2)
Ondatra zibethicus
Common Poorwill (2)
Phalaenoptilus nuttallii
Common Sandweed (1)
Athysanus pusillus
Common Velvet Grass (1)
Holcus lanatus
Common Woolly-sunflower (1)
Eriophyllum lanatum
Common Yarrow (3)
Achillea millefolium
Cougar (1)
Puma concolor
Cow-parsnip (2)
Heracleum maximum
Creeping Thistle (2)
Cirsium arvense
Crested Wheatgrass (2)
Agropyron cristatum
Curl-leaf Mountain-mahogany (5)
Cercocarpus ledifolius
Dark-eyed Junco (2)
Junco hyemalis
Deerbrush (2)
Ceanothus integerrimus
Desert Figwort (2)
Scrophularia desertorum
Desert Gooseberry (4)
Ribes velutinum
Desert-sweet (12)
Chamaebatiaria millefolium
Disappearing Monkeyflower (3)
Erythranthe inflatula
Double-crested Cormorant (2)
Nannopterum auritum
Douglas' Spiraea (5)
Spiraea douglasii
Douglas' Thistle (1)
Cirsium douglasii
Douglas' Wood Beauty (2)
Drymocallis glandulosa
Douglas' Wormwood (3)
Artemisia douglasiana
Douglas's Ground Squirrel (1)
Otospermophilus douglasii
Dwarf Contorted Suncup (1)
Camissonia contorta
Fall Thistle (8)
Cirsium occidentale
False Monkeyflower (2)
Mimetanthe pilosa
Few-flowered Oatgrass (1)
Danthonia unispicata
Field Bindweed (1)
Convolvulus arvensis
Field Hedge-parsley (1)
Torilis arvensis
Fireweed (1)
Chamaenerion angustifolium
Fork-toothed Ookow (1)
Dichelostemma congestum
Forked Tube Lichen (1)
Hypogymnia imshaugii
Fragile Fern (1)
Cystopteris fragilis
Fragrant Sumac (6)
Rhus aromatica
Fringed Water-plantain (1)
Damasonium californicum
Fuller's Teasel (2)
Dipsacus fullonum
Gadwall (5)
Mareca strepera
Giant Helleborine (2)
Epipactis gigantea
Gold Poppy (1)
Eschscholzia caespitosa
Golden Triteleia (1)
Triteleia ixioides
Golden-crowned Sparrow (5)
Zonotrichia atricapilla
Granite Prickly-phlox (1)
Linanthus pungens
Grassy Tarweed (1)
Madia gracilis
Gray Fox (1)
Urocyon cinereoargenteus
Gray Horsebrush (1)
Tetradymia canescens
Great Blue Heron (2)
Ardea herodias
Great Egret (6)
Ardea alba
Great Horned Owl (3)
Bubo virginianus
Great Swamp Ragwort (2)
Senecio hydrophilus
Great Valley gumweed (1)
Grindelia camporum
Greater Yellowlegs (1)
Tringa melanoleuca
Green-band Mariposa Lily (8)
Calochortus macrocarpus
Green-winged Teal (1)
Anas crecca
Greenleaf Manzanita (5)
Arctostaphylos patula
Hooded Merganser (2)
Lophodytes cucullatus
Hooded Skullcap (1)
Scutellaria galericulata
Hooked Groundstar (2)
Ancistrocarphus filagineus
Hooker's Evening-primrose (1)
Oenothera elata
Hot-rock Beardtongue (6)
Penstemon deustus
Hyssop Loosestrife (1)
Lythrum hyssopifolia
Incense Cedar (4)
Calocedrus decurrens
Jointed Coyote-thistle (1)
Eryngium articulatum
Jointed Goatgrass (1)
Aegilops cylindrica
Kellogg's Spurred Lupine (1)
Lupinus caudatus
Killdeer (1)
Charadrius vociferus
Klamath Plum (5)
Prunus subcordata
Knobcone Pine (3)
Pinus attenuata
Lace Lipfern (2)
Myriopteris gracillima
Large-flower Collomia (7)
Collomia grandiflora
Largeleaf Periwinkle (1)
Vinca major
Layne's Monkeyflower (7)
Diplacus layneae
Leichtlin's Mariposa Lily (1)
Calochortus leichtlinii
Leopard Lily (1)
Lilium pardalinum
Lesser Goldfinch (2)
Spinus psaltria
Lewis's Woodpecker (5)
Melanerpes lewis
Linearleaf Phacelia (1)
Phacelia linearis
Lobeleaf Groundsel (1)
Packera multilobata
Long-stalk Clover (1)
Trifolium longipes
Long-toed Salamander (1)
Ambystoma macrodactylum
Mahala-mat Ceanothus (1)
Ceanothus prostratus
Mallard (3)
Anas platyrhynchos
Many-flower Snakelily (5)
Dichelostemma multiflorum
Marsh Wren (2)
Cistothorus palustris
Mathias' Coyote-thistle (1)
Eryngium mathiasiae
Meadow Baby-blue-eyes (1)
Nemophila pedunculata
Meadow Goat's-beard (3)
Tragopogon dubius
Medusa-head (3)
Taeniatherum caput-medusae
Mountain-mahogany (4)
Cercocarpus betuloides
Mt. Lassen Clarkia (2)
Clarkia lassenensis
Mule Deer (7)
Odocoileus hemionus
Mute Swan (2)
Cygnus olor
Naked Buckwheat (4)
Eriogonum nudum
Narrowleaf Milkweed (9)
Asclepias fascicularis
Northern Flicker (1)
Colaptes auratus
Northern Harrier (2)
Circus hudsonius
Northern House Wren (2)
Troglodytes aedon
Northern Pintail (1)
Anas acuta
Northern Shoveler (1)
Spatula clypeata
Northwestern Pond Turtle (3)
Actinemys marmorataProposed Threatened
Nuttall's Woodpecker (1)
Dryobates nuttallii
Oak Titmouse (3)
Baeolophus inornatus
Oceanspray (3)
Holodiscus discolor
One-seed Pussy-paws (3)
Calyptridium monospermum
Oregon Ash (2)
Fraxinus latifolia
Oregon Checker-mallow (4)
Sidalcea oregana
Oregon White Oak (9)
Quercus garryana
Osprey (3)
Pandion haliaetus
Pacific Coast Tick (1)
Dermacentor occidentalis
Pacific Treefrog (1)
Pseudacris regilla
Panicled Willowherb (1)
Epilobium brachycarpum
Philadelphia Fleabane (2)
Erigeron philadelphicus
Pied-billed Grebe (4)
Podilymbus podiceps
Pin Clover (1)
Erodium cicutarium
Pine Violet (6)
Viola purpurea
Piper's Desert-parsley (1)
Lomatium piperi
Ponderosa Pine (2)
Pinus ponderosa
Prairie Flax (1)
Linum lewisii
Purple Green-gentian (5)
Frasera albicaulis
Purple Loosestrife (5)
Lythrum salicaria
Purple Milkweed (5)
Asclepias cordifolia
Purple Missionbells (1)
Fritillaria atropurpurea
Quaking Aspen (3)
Populus tremuloides
Raccoon (1)
Procyon lotor
Rainbow Trout or Steelhead (1)
Oncorhynchus mykiss
Red False Buckthorn (1)
Frangula rubra
Red Larkspur (4)
Delphinium nudicaule
Red-naped Sapsucker (2)
Sphyrapicus nuchalis
Red-osier Dogwood (5)
Cornus sericea
Red-stem Springbeauty (1)
Claytonia rubra
Red-tailed Hawk (5)
Buteo jamaicensis
Reed Canarygrass (1)
Phalaris arundinacea
Ring-billed Gull (1)
Larus delawarensis
Ring-necked Duck (2)
Aythya collaris
Rock Buckwheat (1)
Eriogonum sphaerocephalum
Rough Eyelashweed (1)
Blepharipappus scaber
Rough Sculpin (2)
Cottus asperrimus
Royal Beardtongue (2)
Penstemon speciosus
Rubber Rabbitbrush (4)
Ericameria nauseosa
Ruby-crowned Kinglet (2)
Corthylio calendula
Ruddy Duck (1)
Oxyura jamaicensis
Sagebrush Buttercup (2)
Ranunculus glaberrimus
Scapose Scalepod (3)
Idahoa scapigera
Scarlet Missionbells (2)
Fritillaria recurva
Seaside Heliotrope (1)
Heliotropium curassavicum
Sedge-leaf Whitethorn (5)
Ceanothus cuneatus
Sheep Sorrel (1)
Rumex acetosella
Shelton's Violet (1)
Viola sheltonii
Showy Milkweed (18)
Asclepias speciosa
Showy Tarweed (9)
Madia elegans
Sierra Cliffbrake (1)
Pellaea brachyptera
Sierra Jewelflower (1)
Streptanthus tortuosus
Signal Crayfish (3)
Pacifastacus leniusculus
Silvery Lupine (1)
Lupinus argenteus
Skunkbush (3)
Rhus trilobata
Slender Hareleaf (3)
Lagophylla ramosissima
Small Bedstraw (1)
Galium trifidum
Small-flower Woodland-star (1)
Lithophragma parviflorum
Small-fruit Bulrush (1)
Scirpus microcarpus
Small-leaf Agastache (1)
Agastache parvifolia
Snap-dragon Skullcap (5)
Scutellaria antirrhinoides
Snow Goose (1)
Anser caerulescens
Spreading Dogbane (6)
Apocynum androsaemifolium
Spreading Fleabane (1)
Erigeron divergens
Spring Draba (1)
Draba verna
Starflower Solomon's-plume (1)
Maianthemum stellatum
Striped Skunk (1)
Mephitis mephitis
Striped Whipsnake (1)
Masticophis taeniatus
Strong Clitocybe (1)
Clitocybe robusta
Sulphur-flower Buckwheat (3)
Eriogonum umbellatum
Tall Tumble-mustard (1)
Sisymbrium altissimum
Tall White Bog Orchid (3)
Platanthera dilatata
Tehama Navarretia (1)
Navarretia heterandra
Terrestrial Gartersnake (3)
Thamnophis elegans
Three-bract Loosestrife (2)
Lythrum tribracteatum
Thyme-leaf Broomspurge (2)
Euphorbia serpillifolia
Tobacco Ceanothus (1)
Ceanothus velutinus
Tongue Clarkia (4)
Clarkia rhomboidea
Townsend's Solitaire (3)
Myadestes townsendi
Tracy's Eriastrum (2)
Eriastrum tracyi
Tree Swallow (2)
Tachycineta bicolor
Tricolor Monkeyflower (3)
Diplacus tricolor
Turkey Tail (1)
Trametes versicolor
Turpentine Wavewing (4)
Cymopterus terebinthinus
Umbellate Bastard Toad-flax (2)
Comandra umbellata
Uniform Jumping Spider (1)
Phanias concoloratus
Virgate Scorpionweed (4)
Phacelia heterophylla
Water Loosestrife (1)
Lysimachia thyrsiflora
Water Smartweed (2)
Persicaria amphibia
Waterthread Pondweed (1)
Potamogeton diversifolius
Wavyleaf Indian-paintbrush (6)
Castilleja applegatei
Wax Currant (4)
Ribes cereum
Waxy Checker-mallow (1)
Sidalcea glaucescens
Western Blue Iris (4)
Iris missouriensis
Western Buttercup (1)
Ranunculus occidentalis
Western Columbine (1)
Aquilegia formosa
Western Fence Lizard (4)
Sceloporus occidentalis
Western Fragrant Goldenrod (1)
Euthamia occidentalis
Western Gray Squirrel (1)
Sciurus griseus
Western Grebe (3)
Aechmophorus occidentalis
Western Joepye-weed (1)
Ageratina occidentalis
Western Juniper (5)
Juniperus occidentalis
Western Kingbird (3)
Tyrannus verticalis
Western Marsh Cudweed (1)
Gnaphalium palustre
Western Rattlesnake (1)
Crotalus oreganus
Western Redbud (21)
Cercis occidentalis
Western Screech-Owl (1)
Megascops kennicottii
White Moth Mullein (3)
Verbascum blattaria
White Sweetclover (1)
Melilotus albus
White Triteleia (1)
Triteleia hyacinthina
White-breasted Nuthatch (2)
Sitta carolinensis
White-flower Navarretia (2)
Navarretia leucocephala
Wild Crabapple (4)
Peraphyllum ramosissimum
Wolf Lichen (1)
Letharia vulpina
Wood Duck (2)
Aix sponsa
Woods' Rose (1)
Rosa woodsii
Woolly Mule's-ears (3)
Wyethia mollis
Wormskjold's Clover (4)
Trifolium wormskioldii
Yellow Iris (3)
Iris pseudacorus
Yellow Star-thistle (1)
Centaurea solstitialis
a harvestman (1)
Sabacon siskiyou
a jumping spider (1)
Habronattus oregonensis
a jumping spider (1)
Pelegrina balia
dense mistletoe (5)
Phoradendron densum
narrow-petaled rein-orchid (1)
Platanthera leptopetala
turkey mullein (2)
Croton setiger
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
Green's Awnless Orcutt Grass
Tuctoria greeneiEndangered
Northern Spotted Owl
Strix occidentalis caurinaThreatened
Shasta Crayfish
Pacifastacus fortisEndangered
Slender Orcutt Grass
Orcuttia tenuisThreatened
California Condor
Gymnogyps californianusE, XN
Gray Wolf
Canis lupus
Monarch
Danaus plexippusProposed Threatened
Northwestern Pond Turtle
Actinemys marmorataProposed Threatened
Suckley's Cuckoo Bumble Bee
Bombus suckleyiProposed Endangered
Yellow-billed Cuckoo
Coccyzus americanus
Other Species of Concern (24)

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

American Avocet
Recurvirostra americana
American White Pelican
Pelecanus erythrorhynchos
Bald Eagle
Haliaeetus leucocephalus
Black Tern
Chlidonias niger surinamenisis
California Gull
Larus californicus
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Clark's Grebe
Aechmophorus clarkii
Evening Grosbeak
Coccothraustes vespertinus
Flammulated Owl
Psiloscops flammeolus
Forster's Tern
Sterna forsteri
Franklin's Gull
Leucophaeus pipixcan
Golden Eagle
Aquila chrysaetos
Lesser Yellowlegs
Tringa flavipes
Lewis's Woodpecker
Melanerpes lewis
Marbled Godwit
Limosa fedoa
Northern Harrier
Circus hudsonius
Olive-sided Flycatcher
Contopus cooperi
Pectoral Sandpiper
Calidris melanotos
Rufous Hummingbird
Selasphorus rufus
Sage Thrasher
Oreoscoptes montanus
Western Grebe
Aechmophorus occidentalis
Willet
Tringa semipalmata
Migratory Birds of Conservation Concern (22)

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.

American Avocet
Recurvirostra americana
American White Pelican
Pelecanus erythrorhynchos
Bald Eagle
Haliaeetus leucocephalus
Black Tern
Chlidonias niger
California Gull
Larus californicus
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Clark's Grebe
Aechmophorus clarkii
Evening Grosbeak
Coccothraustes vespertinus
Forster's Tern
Sterna forsteri
Franklin's Gull
Leucophaeus pipixcan
Golden Eagle
Aquila chrysaetos
Lesser Yellowlegs
Tringa flavipes
Lewis's Woodpecker
Melanerpes lewis
Marbled Godwit
Limosa fedoa
Olive-sided Flycatcher
Contopus cooperi
Pectoral Sandpiper
Calidris melanotos
Rufous Hummingbird
Selasphorus rufus
Sage Thrasher
Oreoscoptes montanus
Western Grebe
Aechmophorus occidentalis
Willet
Tringa semipalmata
Vegetation (8)

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

Pacific Northwest Wooded Lava Flow
Tree / Conifer · 700 ha
GNR42.2%
North Pacific Active Volcanic Rock and Cinder Land
Sparse / Sparsely Vegetated · 319 ha
19.2%
California Chaparral
Shrub / Shrubland · 293 ha
GNR17.7%
Sierra Nevada Cliff and Canyon
Sparse / Sparsely Vegetated · 149 ha
9.0%
GNR4.7%
California Mountain Chaparral
Shrub / Shrubland · 41 ha
GNR2.4%
GNR1.9%
California Mixed Conifer Forest
Tree / Conifer · 20 ha
GNR1.2%

Timbered Crater

Timbered Crater Roadless Area

Lassen National Forest, California · 4,096 acres