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Sidalcea oregana

(Nutt. ex Torr. & Gray) Gray

Oregon Checker-mallow

G5Secure Found in 150 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.1256742
Element CodePDMAL110W0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderMalvales
FamilyMalvaceae
GenusSidalcea
Concept Reference
Flora of North America Editorial Committee (FNA). 2015. Flora of North America north of Mexico. Vol. 6. Magnoliophyta: Cucurbitaceae to Droserceae. Oxford University Press, New York. 496 pp + xxiv.
Taxonomic Comments
This treatment is the narrow concept of Sidalcea oregana recognized in Hill's treatment in FNA (2015, vol. 6) which excludes Sidalcea setosa as a distinct species. Previous treatments (Kartesz 1994 and 1999) included S. setosa as indistinct from S. oregana ssp. spicata.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-10-10
Change Date2024-10-10
Edition Date2024-10-10
Edition AuthorsEberly (2024)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Sidalcea oregana is a perennial herb that occurs in western North America from British Columbia and Montana south to Wyoming, Utah, Nevada, and California. With a large range extent, more than 750 occurrences, this species is considered secure. See each subspecies for more information on their conservation status.
Range Extent Comments
Sidalcea oregana occurs in western North America from British Columbia and Montana south to Wyoming, Utah, Nevada, and California. Range extent was estimated using herbarium records documented between 1993 and 2024 (GBIF 2024, iNaturalist 2024). See each subspecies for additional information.
Occurrences Comments
By applying a 1 km separation distance to herbarium records documented between 1993 and 2024, it is estimated that there are between 81 and 300 occurrences rangewide (GBIF 2024, SEINet 2024).
Ecology & Habitat

Habitat

See each subspecies for additional information.
Terrestrial Habitats
Grassland/herbaceous
Other Nations (2)
CanadaNU
ProvinceRankNative
British ColumbiaSUYes
United StatesN5
ProvinceRankNative
WashingtonSNRYes
IdahoSNRYes
NevadaSNRYes
OregonSNRYes
CaliforniaSNRYes
MontanaS2Yes
WyomingS3Yes
UtahSNRYes
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (150)
California (66)
AreaForestAcres
Black ButteMendocino National Forest15,461
Black CinderLassen National Forest239
Bucks LakePlumas National Forest680
Carson - IcebergStanislaus National Forest56,430
Castle Crags AShasta-Trinity National Forest113
Castle Crags BShasta-Trinity National Forest1,619
Castle PeakTahoe National Forest14,974
Chineese Camp (CA)Humboldt-Toiyabe National Forest4,339
Chips CreekLassen National Forest29,089
DardanellesEldorado National Forest8,110
Devil's Gate (CA)Humboldt-Toiyabe National Forest9,946
Dexter CanyonInyo National Forest17,053
Domeland Add.Sequoia National Forest3,046
Duncan CanyonTahoe National Forest8,621
East YubaTahoe National Forest17,968
FalesHumboldt-Toiyabe National Forest9,138
Granite ChiefTahoe National Forest6,546
GrindstoneMendocino National Forest26,031
Grouse LakesTahoe National Forest19,085
Hall Natural AreaInyo National Forest5,236
Heart LakeLassen National Forest9,349
Hoover - Green Ck NoHumboldt-Toiyabe National Forest7,155
Hoover - Mt.olsenHumboldt-Toiyabe National Forest624
Hoover - NorthHumboldt-Toiyabe National Forest1,574
Hoover - Virginia LksHumboldt-Toiyabe National Forest5,050
Horse Mdw.Inyo National Forest5,687
Iceberg - Mill CreekHumboldt-Toiyabe National Forest26,988
Indian CreekKlamath National Forest5,011
Jennie LakeSequoia National Forest2,388
Lake EleanorShasta-Trinity National Forest397
Log Cabin SaddlebagInyo National Forest15,165
Middle ForkPlumas National Forest29,278
Middle YubaTahoe National Forest7,379
Mokelumne - CharityHumboldt-Toiyabe National Forest202
Mt. JacksonHumboldt-Toiyabe National Forest20,721
Mt. BidwellModoc National Forest11,687
Mt. EddyShasta-Trinity National Forest7,232
Mt. HoffmanModoc National Forest9,780
Mt. OlsenInyo National Forest2,161
Nevahbe RidgeInyo National Forest302
NightStanislaus National Forest3,173
North Fork American RiverTahoe National Forest38,495
North LakeInyo National Forest2,406
Onion SpringsLassen National Forest2,421
Orleans Mtn.Klamath National Forest49,090
Orleans Mtn. CSix Rivers National Forest15,589
ParsnipModoc National Forest8,485
PyramidEldorado National Forest24,347
Raymond PeakStanislaus National Forest3,646
Raymond PeakEldorado National Forest2,518
Robinson PeakHumboldt-Toiyabe National Forest5,835
RussianKlamath National Forest21,771
SherwinInyo National Forest3,140
Silver HillHumboldt-Toiyabe National Forest4,423
SinkardHumboldt-Toiyabe National Forest2,004
SnoozerKlamath National Forest23,414
South SierraSequoia National Forest8,008
South SierraInyo National Forest41,853
Table Mtn.Inyo National Forest4,215
Timbered CraterLassen National Forest4,096
Tragedy - Elephants BackEldorado National Forest20,866
West Walker (CA)Humboldt-Toiyabe National Forest495
Wild Cattle MtnLassen National Forest4,965
Wild Horse Mtn. (CA)Humboldt-Toiyabe National Forest28,822
Wilderness ContiguousMendocino National Forest3,606
WoodpeckerSequoia National Forest11,936
Idaho (3)
AreaForestAcres
NeedlesPayette National Forest131,279
Peace RockBoise National Forest191,734
SeceshPayette National Forest248,088
Nevada (17)
AreaForestAcres
Blade CreekHumboldt-Toiyabe National Forest6,331
ButtermilkHumboldt-Toiyabe National Forest19,373
East Fork QuinnHumboldt-Toiyabe National Forest30,977
Flat CreekHumboldt-Toiyabe National Forest5,843
Hicks MountainHumboldt-Toiyabe National Forest16,334
Mahogany RidgeHumboldt-Toiyabe National Forest16,765
Mystic (NV)Humboldt-Toiyabe National Forest5,644
Pearl PeakHumboldt-Toiyabe National Forest71,405
Pine Grove SouthHumboldt-Toiyabe National Forest88,945
Pine Mtn.Humboldt-Toiyabe National Forest12,519
Rose - Big MeadowsHumboldt-Toiyabe National Forest311
Rose - Davis Mdw.Humboldt-Toiyabe National Forest2,361
Rose - GalenaHumboldt-Toiyabe National Forest3,711
Ruby - SouthHumboldt-Toiyabe National Forest13,195
Santa RosaHumboldt-Toiyabe National Forest54,555
South Fork QuinnHumboldt-Toiyabe National Forest40,535
South Shoshone PeakHumboldt-Toiyabe National Forest24,528
Oregon (34)
AreaForestAcres
Boulder ParkWallowa-Whitman National Forest12,141
Brattain ButteFremont National Forest5,959
BuckhornWallowa-Whitman National Forest17,180
Bulldog RockWillamette National Forest559
Bulldog RockUmpqua National Forest6,056
Coleman RimFremont National Forest10,638
Cook RidgeWallowa-Whitman National Forest19,617
Crane MountainFremont National Forest23,096
Dixie ButteMalheur National Forest12,208
DoneganUmpqua National Forest5,914
Drake - McdowellFremont National Forest5,767
Flag CreekMalheur National Forest7,716
Glacier MountainMalheur National Forest20,661
Greenhorn MountainMalheur National Forest15,936
Greenhorn Mtn.Umatilla National Forest11,191
HellholeUmatilla National Forest65,679
Jackson Creek AppendageUmpqua National Forest4,673
Lick CreekWallowa-Whitman National Forest1,956
Little SheepWallowa-Whitman National Forest5,238
LookingglassUmatilla National Forest4,859
Lookout MountainOchoco National Forest14,115
Mt. EmilyWallowa-Whitman National Forest8,421
Myrtle SilviesMalheur National Forest11,679
North Fork MalheurMalheur National Forest18,069
ReservoirWallowa-Whitman National Forest13,641
Rock CreekOchoco National Forest11,396
ShaketableMalheur National Forest6,764
Sky Lakes AWinema National Forest3,940
Sky Lakes BWinema National Forest9,615
Snake RiverWallowa-Whitman National Forest31,229
Twin MountainWallowa-Whitman National Forest58,533
Upper Grande RondeWallowa-Whitman National Forest11,723
W. BoundaryWinema National Forest2,345
Waldo - Salmon CreekWillamette National Forest3,195
Utah (18)
AreaForestAcres
418013Uinta National Forest14,643
418015Uinta National Forest17,289
418016Uinta National Forest35,240
418026Uinta National Forest14,038
418027Uinta National Forest13,884
418028Uinta National Forest34,002
418043Uinta National Forest9,493
418044Uinta National Forest5,495
Boulder MountainWasatch-Cache National Forest8,852
Clarkston Mtn.Caribou National Forest7,099
GibsonWasatch-Cache National Forest5,350
Mahogany RangeWasatch-Cache National Forest11,409
Mt. Logan NorthWasatch-Cache National Forest18,930
Mt. Logan SouthWasatch-Cache National Forest17,014
Mt. NaomiWasatch-Cache National Forest41,922
Public GroveWasatch-Cache National Forest6,341
Right Hand Fork LoganWasatch-Cache National Forest15,023
Temple PeakWasatch-Cache National Forest24,081
Washington (7)
AreaForestAcres
Alpine Lakes Adj.Wenatchee National Forest57,104
Blue SlideWenatchee National Forest17,505
Devils GulchWenatchee National Forest24,419
Lion RockWenatchee National Forest4,692
ManastashWenatchee National Forest11,155
QuartzWenatchee National Forest8,550
TaneumWenatchee National Forest26,140
Wyoming (5)
AreaForestAcres
Grayback RidgeBridger-Teton National Forest295,113
Gros Ventre MountainsBridger-Teton National Forest106,418
Lake Alice - Commissary RidgeBridger-Teton National Forest166,707
Monument RidgeBridger-Teton National Forest17,720
Nugent Park - Hams Fork RidgeBridger-Teton National Forest21,241
References (3)
  1. Flora of North America Editorial Committee (FNA). 2015. Flora of North America north of Mexico. Vol. 6. Magnoliophyta: Cucurbitaceae to Droserceae. Oxford University Press, New York. 496 pp + xxiv.
  2. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  3. Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.