Iceberg - Silver Mtn.

Humboldt-Toiyabe National Forest · California · 294 acres · RoadlessArea Rule (2001)
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Observed Species (68)

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

American Dipper (1)
Cinclus mexicanus
Antelope Bitterbrush (5)
Purshia tridentata
Arrowleaf Balsamroot (1)
Balsamorhiza sagittata
Bacigalup's Downingia (1)
Downingia bacigalupii
Big Sagebrush (1)
Artemisia tridentata
Big Western Juniper (6)
Juniperus grandis
Bitter Cherry (5)
Prunus emarginata
Bottlebrush Squirrel-tail (1)
Elymus elymoides
Brewer's Angelica (1)
Angelica breweri
Bulbous Woodland-star (1)
Lithophragma glabrum
Common Mullein (1)
Verbascum thapsus
Common Yarrow (1)
Achillea millefolium
Curl-leaf Mountain-mahogany (2)
Cercocarpus ledifolius
Douglas' Squirrel (1)
Tamiasciurus douglasii
Eastern Warbling-Vireo (1)
Vireo gilvus
Field Bindweed (1)
Convolvulus arvensis
Field Horsetail (1)
Equisetum arvense
Fireweed (1)
Chamaenerion angustifolium
Flaky Waxy Cap (1)
Hygrophorus chrysodon
Giant Blazingstar (1)
Mentzelia laevicaulis
Giant Pinedrops (1)
Pterospora andromedea
Golden-mantled Ground Squirrel (3)
Callospermophilus lateralis
Greenleaf Manzanita (1)
Arctostaphylos patula
Hoary Pincushion (1)
Chaenactis douglasii
Hoary Tansy-aster (1)
Dieteria canescens
Hot-rock Beardtongue (1)
Penstemon deustus
Huckleberry Oak (2)
Quercus vacciniifolia
Jeffrey's Pine (4)
Pinus jeffreyi
Low Scorpionweed (2)
Phacelia humilis
Milky Kelloggia (1)
Kelloggia galioides
Mountain Maple (2)
Acer glabrum
Mountain Snowberry (2)
Symphoricarpos rotundifolius
Naked Buckwheat (4)
Eriogonum nudum
One-seed Pussy-paws (1)
Calyptridium monospermum
Pacific Treefrog (1)
Pseudacris regilla
Perennial Twistflower (2)
Streptanthus cordatus
Pinewoods Lousewort (1)
Pedicularis semibarbata
Prairie Flax (1)
Linum lewisii
Quaking Aspen (2)
Populus tremuloides
Rubber Rabbitbrush (4)
Ericameria nauseosa
Scarlet Skyrocket (1)
Ipomopsis aggregata
Sierra Chinquapin (1)
Chrysolepis sempervirens
Sierra Currant (4)
Ribes nevadense
Sierra Onion (2)
Allium campanulatum
Snowplant (17)
Sarcodes sanguinea
Speckled Alder (1)
Alnus incana
Spotted Sandpiper (1)
Actitis macularius
Spreading Dogbane (8)
Apocynum androsaemifolium
Stemless Mock Goldenweed (2)
Stenotus acaulis
Sulphur-flower Buckwheat (1)
Eriogonum umbellatum
Swamp Whiteheads (1)
Angelica capitellata
Sweetclover (1)
Melilotus officinalis
Tall Woolly Buckwheat (1)
Eriogonum elatum
Terrestrial Gartersnake (1)
Thamnophis elegans
Tobacco Ceanothus (2)
Ceanothus velutinus
Veiled Polypore (1)
Cryptoporus volvatus
Wall-flower Phoenicaulis (1)
Phoenicaulis cheiranthoides
Wax Currant (1)
Ribes cereum
Waxy Checker-mallow (2)
Sidalcea glaucescens
Western Columbine (1)
Aquilegia formosa
Western Dwarf-mistletoe (1)
Arceuthobium campylopodum
Western Fence Lizard (1)
Sceloporus occidentalis
Western Tanager (3)
Piranga ludoviciana
White Fir (1)
Abies concolor
White-headed Woodpecker (1)
Leuconotopicus albolarvatus
Woolly Mule's-ears (2)
Wyethia mollis
Yellow-rumped Warbler (2)
Setophaga coronata
a fungus (2)
Rhizopogon evadens
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.

Sierra Nevada Yellow-legged Frog
Rana sierraeEndangered
Whitebark Pine
Pinus albicaulisThreatened
Yosemite Toad
Anaxyrus canorusThreatened
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
Sierra Nevada Red Fox
Vulpes vulpes necator
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
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Evening Grosbeak
Coccothraustes vespertinus
Golden Eagle
Aquila chrysaetos
Hermit Warbler
Setophaga occidentalis
Olive-sided Flycatcher
Contopus cooperi
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
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Evening Grosbeak
Coccothraustes vespertinus
Golden Eagle
Aquila chrysaetos
Hermit Warbler
Setophaga occidentalis
Olive-sided Flycatcher
Contopus cooperi
Vegetation (3)

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

California Mixed Conifer Forest
Tree / Conifer · 83 ha
GNR69.3%
California Mixed Conifer Forest
Tree / Conifer · 18 ha
GNR15.0%

Iceberg - Silver Mtn.

Iceberg - Silver Mtn. Roadless Area

Humboldt-Toiyabe National Forest, California · 294 acres