Thatcher

Mendocino National Forest · California · 16,652 acres · RoadlessArea Rule (2001)
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Observed Species (91)

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

(1)
Coprinellus bipellis
Alkali False Whitlow-grass (1)
Cusickiella douglasii
Beavertail Mariposa Lily (5)
Calochortus coeruleus
Big Manzanita (1)
Arctostaphylos manzanita
Bigleaf Maple (1)
Acer macrophyllum
Black-tailed Jackrabbit (1)
Lepus californicus
Bobcat (2)
Lynx rufus
Bolander's Bedstraw (1)
Galium bolanderi
Brandegee's Springbeauty (1)
Claytonia saxosa
Brewer's Twistflower (2)
Streptanthus breweri
Brown-eyed Wolf Lichen (1)
Letharia columbiana
California Black Oak (1)
Quercus kelloggii
California Fawnlily (2)
Erythronium californicum
California Kingsnake (1)
Lampropeltis californiae
California Red Fir (1)
Abies magnifica
Californian False Hellebore (2)
Veratrum californicum
Clustered Lady's-slipper (1)
Cypripedium fasciculatum
Common Poorwill (1)
Phalaenoptilus nuttallii
Common Sagebrush Lizard (1)
Sceloporus graciosus
Common Yarrow (1)
Achillea millefolium
Cougar (1)
Puma concolor
Deltoid Balsamroot (1)
Balsamorhiza deltoidea
Dense Lace Fern (3)
Aspidotis densa
Dwarf Purple Monkeyflower (1)
Diplacus nanus
Elegant Mariposa Lily (1)
Calochortus elegans
Fall Thistle (1)
Cirsium occidentale
Flammulated Owl (1)
Psiloscops flammeolus
Giant Rattlesnake-plantain (1)
Goodyera oblongifolia
Golden-mantled Ground Squirrel (1)
Callospermophilus lateralis
Grassy Tarweed (1)
Madia gracilis
Greene's Blue-eyed Mary (1)
Collinsia greenei
Greene's Ragwort (4)
Packera greenei
Hayfield Tarweed (1)
Hemizonia congesta
Henderson's Shootingstar (2)
Primula hendersonii
Hoary Manzanita (1)
Arctostaphylos canescens
Hooker's Mandarin (1)
Prosartes hookeri
Ithuriel's Spear (1)
Triteleia laxa
Jointed Goatgrass (1)
Aegilops cylindrica
Lace Lipfern (1)
Myriopteris gracillima
Large-flower Collomia (2)
Collomia grandiflora
Mexican Catchfly (8)
Silene laciniata
Mountain Whitethorn (2)
Ceanothus cordulatus
Mule Deer (1)
Odocoileus hemionus
Naked Buckwheat (1)
Eriogonum nudum
Narrowleaf Owl's-clover (1)
Castilleja attenuata
Northern Alligator Lizard (1)
Elgaria coerulea
Ojai Fritillary (2)
Fritillaria affinis
One-seed Pussy-paws (2)
Calyptridium monospermum
Oregon White Oak (3)
Quercus garryana
Pacific Bleedingheart (2)
Dicentra formosa
Pacific Madrone (2)
Arbutus menziesii
Pine Violet (1)
Viola purpurea
Pringle Bird's-beak (1)
Cordylanthus pringlei
Purdy's Fritillary (8)
Fritillaria purdyi
Purple Finch (2)
Haemorhous purpureus
Rayless Arnica (1)
Arnica discoidea
Red Baneberry (1)
Actaea rubra
Red Larkspur (1)
Delphinium nudicaule
San Francisco Broomrape (1)
Aphyllon franciscanum
San Francisco Woodland-star (1)
Lithophragma affine
Scarlet Missionbells (4)
Fritillaria recurva
Scythe-leaf Onion (2)
Allium falcifolium
Serpentine Scorpionweed (1)
Phacelia corymbosa
Sierra Jewelflower (1)
Streptanthus tortuosus
Siskiyou Fritillary (4)
Fritillaria glauca
Slender Nemacladus (1)
Nemacladus capillaris
Small-flower Blue-eyed Mary (1)
Collinsia parviflora
Small-head Tarweed (2)
Hemizonella minima
Solomon's-plume (1)
Maianthemum racemosum
Spotted Owl (1)
Strix occidentalis
Spreading Stonecrop (1)
Sedum radiatum
Sugar Pine (1)
Pinus lambertiana
Three-tooth Oceanspray (1)
Horkelia tridentata
Tolmie's Mariposa Lily (2)
Calochortus tolmiei
Tongue Clarkia (2)
Clarkia rhomboidea
Turpentine Weed (1)
Trichostema laxum
Virile Crayfish (1)
Faxonius virilis
Viscid Bolete (1)
Aureoboletus flaviporus
Wall-flower Phoenicaulis (2)
Phoenicaulis cheiranthoides
Western Poison-oak (1)
Toxicodendron diversilobum
Western Rattlesnake (1)
Crotalus oreganus
Western Screech-Owl (1)
Megascops kennicottii
Western Tanager (1)
Piranga ludoviciana
Western Wallflower (1)
Erysimum capitatum
White Fir (2)
Abies concolor
White Meadowfoam (2)
Limnanthes alba
White Toadshade (1)
Trillium albidum
Wild Boar (1)
Sus scrofa
Wild Turkey (1)
Meleagris gallopavo
Woolly Angelica (1)
Angelica tomentosa
a fungus (1)
Omphalotus olivascens
Federally Listed Species (9)

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.

Burke's Goldfields
Lasthenia burkeiEndangered
Contra Costa Goldfields
Lasthenia conjugensEndangered
Northern Spotted Owl
Strix occidentalis caurinaThreatened
Showy Indian Clover
Trifolium amoenumEndangered
California Condor
Gymnogyps californianusE, XN
Monarch
Danaus plexippusProposed Threatened
Northwestern Pond Turtle
Actinemys marmorataProposed Threatened
Western Spadefoot
Spea hammondiiProposed Threatened
Yellow-billed Cuckoo
Coccyzus americanus
Other Species of Concern (9)

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

Allen's Hummingbird
Selasphorus sasin
Bald Eagle
Haliaeetus leucocephalus
Cassin's Finch
Haemorhous cassinii
Chestnut-backed Chickadee
Poecile rufescens rufescens
Golden Eagle
Aquila chrysaetos
Oak Titmouse
Baeolophus inornatus
Rufous Hummingbird
Selasphorus rufus
Western Screech-Owl
Megascops kennicottii cardonensis
Wrentit
Chamaea fasciata
Migratory Birds of Conservation Concern (9)

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.

Allen's Hummingbird
Selasphorus sasin
Bald Eagle
Haliaeetus leucocephalus
Cassin's Finch
Haemorhous cassinii
Chestnut-backed Chickadee
Poecile rufescens
Golden Eagle
Aquila chrysaetos
Oak Titmouse
Baeolophus inornatus
Rufous Hummingbird
Selasphorus rufus
Western Screech-Owl
Megascops kennicottii
Wrentit
Chamaea fasciata
Vegetation (11)

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

California Chaparral
Shrub / Shrubland · 1,731 ha
GNR25.7%
California Mountain Chaparral
Shrub / Shrubland · 1,377 ha
GNR20.4%
California Mixed Conifer Forest
Tree / Conifer · 703 ha
GNR10.4%
GNR10.3%
California Mixed Evergreen Forest
Tree / Conifer · 599 ha
GNR8.9%
California Ruderal Grassland and Meadow
Herb / Exotic Herbaceous · 485 ha
7.2%
California High Mountain Meadow
Herb / Grassland · 253 ha
GNR3.7%
California Mixed Conifer Forest
Tree / Conifer · 223 ha
GNR3.3%
California Foothill Mixed Oak Woodland
Tree / Hardwood · 219 ha
GNR3.2%
California Foothill Black Oak and Conifer Forest
Tree / Conifer-Hardwood · 118 ha
GNR1.7%
GNR1.3%

Thatcher

Thatcher Roadless Area

Mendocino National Forest, California · 16,652 acres