Skimmerhorn Appendage

Umpqua National Forest · Oregon · 1,820 acres · RoadlessArea Rule (2001)
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Observed Species (58)

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

Aleutian Maidenhair Fern (1)
Adiantum aleuticum
American Bird's-foot-trefoil (1)
Acmispon americanus
American Purple Vetch (1)
Vicia americana
Brook Trout (2)
Salvelinus fontinalis
Canada Goose (1)
Branta canadensis
Cascades Frog (1)
Rana cascadae
Coastal Brookfoam (1)
Boykinia occidentalis
Coastal Giant Salamander (1)
Dicamptodon tenebrosus
Columbian Windflower (3)
Anemonastrum deltoideum
Common St. John's-wort (1)
Hypericum perforatum
Curly Dock (1)
Rumex crispus
Deerbrush (1)
Ceanothus integerrimus
Fairy Slipper (1)
Calypso bulbosa
Frosty paintbrush (1)
Castilleja pruinosa
Giant Pinedrops (1)
Pterospora andromedea
Giant Rattlesnake-plantain (2)
Goodyera oblongifolia
Golden Chinquapin (1)
Chrysolepis chrysophylla
Hoary Manzanita (1)
Arctostaphylos canescens
Incense Cedar (1)
Calocedrus decurrens
Leafless wintergreen (1)
Pyrola aphylla
Leopard Lily (1)
Lilium pardalinum
Longleaf Oregon-grape (2)
Berberis nervosa
Marbled Wild Ginger (7)
Asarum marmoratum
Modest Whipple-vine (1)
Whipplea modesta
Oso-berry (1)
Oemleria cerasiformis
Pacific Madrone (1)
Arbutus menziesii
Pacific Rhododendron (7)
Rhododendron macrophyllum
Pacific Stonecrop (3)
Sedum spathulifolium
Pacific Yew (1)
Taxus brevifolia
Phantom Orchid (2)
Cephalanthera austiniae
Piper's Oregon-grape (1)
Berberis aquifolium
Ponderosa Pine (2)
Pinus ponderosa
Rainbow Trout or Steelhead (1)
Oncorhynchus mykiss
Red-breasted Sapsucker (1)
Sphyrapicus ruber
Salal (1)
Gaultheria shallon
Scouler's Bellflower (1)
Campanula scouleri
Signal Crayfish (1)
Pacifastacus leniusculus
Single-flowered Clintonia (2)
Clintonia uniflora
Slender Catchfly (1)
Silene greenei
Snowplant (6)
Sarcodes sanguinea
Solomon's-plume (1)
Maianthemum racemosum
Spreading Dogbane (3)
Apocynum androsaemifolium
Square-twigged Huckleberry (1)
Vaccinium membranaceum
Starflower Solomon's-plume (1)
Maianthemum stellatum
Striped Coralroot (1)
Corallorhiza striata
Sugar Pine (3)
Pinus lambertiana
Sugarstick (1)
Allotropa virgata
Tolmie's Mariposa Lily (8)
Calochortus tolmiei
Twinflower (1)
Linnaea borealis
Vanilla-leaf (1)
Achlys triphylla
Vine Maple (1)
Acer circinatum
Washington Lily (1)
Lilium washingtonianum
Western Toad (1)
Anaxyrus boreas
Western Trillium (2)
Trillium ovatum
White Inside-out-flower (1)
Vancouveria hexandra
White-veined Wintergreen (1)
Pyrola picta
Wood Duck (1)
Aix sponsa
Yellow-flower Iris (5)
Iris chrysophylla
Federally Listed Species (7)

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.

Franklin Bumble Bee
Bombus frankliniEndangered
Northern Spotted Owl
Strix occidentalis caurinaThreatened
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 (4)

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

Chestnut-backed Chickadee
Poecile rufescens rufescens
Evening Grosbeak
Coccothraustes vespertinus
Olive-sided Flycatcher
Contopus cooperi
Rufous Hummingbird
Selasphorus rufus
Migratory Birds of Conservation Concern (4)

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.

Chestnut-backed Chickadee
Poecile rufescens
Evening Grosbeak
Coccothraustes vespertinus
Olive-sided Flycatcher
Contopus cooperi
Rufous Hummingbird
Selasphorus rufus
Vegetation (4)

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

GNR72.5%
California Mixed Conifer Forest
Tree / Conifer · 100 ha
GNR13.6%
Pacific Northwest Mountain Shrubland
Shrub / Shrubland · 19 ha
GNR2.6%

Skimmerhorn Appendage

Skimmerhorn Appendage Roadless Area

Umpqua National Forest, Oregon · 1,820 acres