Roadless Areas
Home/Species/ Sierra Onion

Allium campanulatum

S. Wats.

Sierra Onion

G5Secure Found in 89 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.160633
Element CodePMLIL020E0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderAsparagales
FamilyAmaryllidaceae
GenusAllium
Other Common Names
dusky onion (EN) Dusky Onion (EN)
Concept Reference
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.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2023-07-24
Change Date2023-07-24
Edition Date2023-07-24
Edition AuthorsEberly (2023)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Allium campanulatum is perennial, bulbous herb of the western United States. With a large range extent, over 600 occurrences, abundant habitat, and broad habitat preferences, this species is considered secure.
Range Extent Comments
Allium campanulatum occurs in the western United States. It is widespread in the mountains of California and Oregon with disjunct occurrences in central Washington (FNA 2002a, Roché et al. 2023, WNHP 2023). This species is reported from Utah but it is not included in the distribution in FNA (2002a). According to Welsh et al. (2015), reports of this species in Utah are likely Allium biceptrum. Range extent was estimated using herbarium specimens and photo-based observations documented between 1982 and 2023 (CCH2 2023, GBIF 2023, iNaturalist 2023).
Occurrences Comments
By applying a 1 km separation distance to herbarium records and photo-based observations documented between 1992 and 2023, it is estimated that there are over 600 occurrences rangewide (CCH2 2023, GBIF 2023, iNaturalist 2023).
Threat Impact Comments
Potential threats to this species in Washington and Oregon include recreational activities, grazing livestock road maintenance and competition with non-native plants or native conifers. However, not enough information is available to assess threats rangewide, especially where it is most abundant, in California.
Ecology & Habitat

Habitat

This species occurs in open or shaded slopes, dry meadows, drainage channels with rocky, sandy, or thin soils at elevations of 600 to 2,600 m (FNA 2002a, Roché et al. 2023, WNHP 2023).
Terrestrial Habitats
Grassland/herbaceous
Other Nations (1)
United StatesN5
ProvinceRankNative
OregonS3Yes
WashingtonS1Yes
CaliforniaSNRYes
NevadaS3Yes
Threat Assessments
ThreatScopeSeverityTiming
8 - Invasive & other problematic species, genes & diseasesUnknownUnknownHigh (continuing)
8.1 - Invasive non-native/alien species/diseasesUnknownUnknownHigh (continuing)
8.1.1 - Unspecified speciesUnknownUnknownHigh (continuing)

—

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)Yes
Roadless Areas (89)
California (84)
AreaForestAcres
AgnewSequoia National Forest9,561
AntimonyLos Padres National Forest40,911
BackboneShasta-Trinity National Forest11,466
Bell MeadowStanislaus National Forest7,968
Bell QuinbyShasta-Trinity National Forest11,556
BlackKlamath National Forest6,530
Black CinderLassen National Forest239
Black Mtn.Sequoia National Forest15,102
Box CampKlamath National Forest858
Bucks LakePlumas National Forest680
Caples CreekEldorado National Forest17,854
Carson - IcebergStanislaus National Forest56,430
Castle PeakTahoe National Forest14,974
ChannellSequoia National Forest45,429
ChicoSequoia National Forest39,836
ChinquapinShasta-Trinity National Forest22,040
Chips CreekLassen National Forest29,089
Chips CreekPlumas National Forest12,940
Cub CreekLassen National Forest8,643
DardanellesEldorado National Forest8,110
De La GuerraLos Padres National Forest5,418
Devil GulchSierra National Forest30,490
Dinkey LakesSierra National Forest34,171
DomeStanislaus National Forest11,085
Domeland Add.Sequoia National Forest3,046
Duncan CanyonTahoe National Forest8,621
EagleStanislaus National Forest16,116
East ForkShasta-Trinity National Forest6,201
East YubaTahoe National Forest17,968
EbbettsHumboldt-Toiyabe National Forest255
Elk CreekMendocino National Forest23,182
Fawn LakeEldorado National Forest1,153
Granite ChiefTahoe National Forest6,546
Granite PeakSan Bernardino National Forest450
Greenhorn CreekSequoia National Forest28,226
Grizzly PeakPlumas National Forest6,222
Grouse LakesTahoe National Forest19,085
Heart LakeLassen National Forest9,349
Hoover - NorthHumboldt-Toiyabe National Forest1,574
Horse Mdw.Inyo National Forest5,687
Iceberg - Mill CreekHumboldt-Toiyabe National Forest26,988
Iceberg - Silver Mtn.Humboldt-Toiyabe National Forest294
Jennie LakeSequoia National Forest2,388
Kings RiverSierra National Forest52,999
Lakes BasinTahoe National Forest557
Lion RidgeSequoia National Forest5,265
Middle ForkPlumas National Forest29,278
Middle YubaTahoe National Forest7,379
MonarchSierra National Forest697
MosesSequoia National Forest22,077
Mt. LassicSix Rivers National Forest6,643
Mt. RebaStanislaus National Forest3,869
Murphy GladeShasta-Trinity National Forest1,015
NightStanislaus National Forest3,173
North Fork American RiverTahoe National Forest38,495
North MountainStanislaus National Forest7,856
Orleans Mtn.Klamath National Forest49,090
Orleans Mtn. CSix Rivers National Forest15,589
PattisonShasta-Trinity National Forest29,299
Poison HoleEldorado National Forest2,627
PyramidEldorado National Forest24,347
Raymond PeakStanislaus National Forest3,646
Raymond PeakEldorado National Forest2,518
RinconSequoia National Forest54,610
RussianKlamath National Forest21,771
San JoaquinSierra National Forest22,474
Sawmill - BadlandsLos Padres National Forest51,362
ShuteyeSierra National Forest7,313
Slate Mtn.Sequoia National Forest12,299
SnoozerKlamath National Forest23,414
South SierraSequoia National Forest8,008
South SierraInyo National Forest41,853
SugarloafSan Bernardino National Forest8,206
Thomes CreekMendocino National Forest16,616
Tioga LakeInyo National Forest829
Tragedy - Elephants BackEldorado National Forest20,866
Trail LakeLassen National Forest1,124
WaterhouseStanislaus National Forest4,394
Weaver BallyShasta-Trinity National Forest829
West GirardShasta-Trinity National Forest37,516
Wild Cattle MtnLassen National Forest4,965
Wilderness ContiguousMendocino National Forest3,606
WoodpeckerSequoia National Forest11,936
WoolstaffSequoia National Forest41,445
Nevada (5)
AreaForestAcres
Mystic (NV)Humboldt-Toiyabe National Forest5,644
Rose - Davis Mdw.Humboldt-Toiyabe National Forest2,361
Rose - EvansHumboldt-Toiyabe National Forest4,782
Rose - GalenaHumboldt-Toiyabe National Forest3,711
Rose - Whites CanyonHumboldt-Toiyabe National Forest2,568
References (8)
  1. CCH2 Portal. 2023. Consortium of California Herbaria. Online. Available: https//:www.cch2.org/portal/index.php (accessed 2023).
  2. Flora of North America Editorial Committee (FNA). 2002a. Flora of North America north of Mexico. Vol. 26. Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York. xxvi + 723 pp.
  3. Global Biodiversity Information Facility (GBIF). 2023. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2023).
  4. iNaturalist. 2023. Online. Available: https://www.inaturalist.org (accessed 2023).
  5. 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.
  6. Roché, C., F. Callahan, K. Sturgeon, and N. LeClear. 2023. Call me <i>Allium</i>: a guide to Oregon’s native onions. Native Plant Society of Oregon Occasional Paper 4:1-47.
  7. Washington Natural Heritage Program (WNHP). 2023. Online Field Guide to the Rare Plants of Washington. Online. Available: https://fieldguide.mt.gov/wa (accessed 2023).
  8. Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins. (Eds). 2015. A Utah flora, fifth edition, revised 2015. Monte L. Bean Life Science Museum, Provo, Utah. 987 pp.