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Allium anceps

Kellogg

Kellogg's Onion

G4Apparently Secure Found in 17 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.160795
Element CodePMLIL02050
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderAsparagales
FamilyAmaryllidaceae
GenusAllium
Other Common Names
twinleaf onion (EN) Twinleaf 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 Date1985-09-06
Edition Date2023-09-11
Edition AuthorsGries, D. (1998), rev. Eberly (2023)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Allium anceps is a perennial bulbous herb of the western United States where it is found in northern Nevada, northeastern California, southeastern Oregon, and southern Idaho. There are between 100 and 200 known occurrences over this range but little is known about threats or trends.
Range Extent Comments
Allium anceps occurs in the western United States where it is widespread in Nevada, largely northern Nevada, but extends into southwestern Idaho (Butte and Twin Falls Counties), southeastern Oregon, and northeastern California (Kartesz 1988, Idaho Native Plant Society 1993, Roché et al. 2023). Range extent was estimated using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1992 and 2023 (CCH2 2023, GBIF 2023, iNaturalist 2023, NatureServe 2023, SEINet 2023).
Occurrences Comments
By applying a 1 km separation distance to herbarium records and photo-based observations documented between 1982 and 2023, it is estimated that there are nearly 145 occurrences rangewide (CCH2 2023, GBIF 2023, iNaturalist 2023, NatureServe 2023, SEINet 2023).
Ecology & Habitat

Habitat

This species grows on heavy, barren clay or rocky soils on flats and slopes in the foothills and lowlands at elevations of 700 to 1,900 m (Idaho Native Plant Society 1993, Roché et al. 2023).
Terrestrial Habitats
Barrens
Other Nations (1)
United StatesN4
ProvinceRankNative
IdahoS2Yes
CaliforniaSNRYes
OregonSNRYes
NevadaS3Yes
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)Yes
Roadless Areas (17)
California (6)
AreaForestAcres
Barney RileyHumboldt-Toiyabe National Forest8,083
Chineese Camp (CA)Humboldt-Toiyabe National Forest4,339
Devil's Gate (CA)Humboldt-Toiyabe National Forest9,946
Mt. JacksonHumboldt-Toiyabe National Forest20,721
SinkardHumboldt-Toiyabe National Forest2,004
West Walker (CA)Humboldt-Toiyabe National Forest495
Nevada (11)
AreaForestAcres
Chineese Camp (NV)Humboldt-Toiyabe National Forest15,207
Georges CanyonHumboldt-Toiyabe National Forest108,551
Larken LakeHumboldt-Toiyabe National Forest4,159
Mt. HicksHumboldt-Toiyabe National Forest15,698
Pine Grove SouthHumboldt-Toiyabe National Forest88,945
Rose - Alum CreekHumboldt-Toiyabe National Forest853
Rose - EvansHumboldt-Toiyabe National Forest4,782
South Fork QuinnHumboldt-Toiyabe National Forest40,535
Tehama CreekHumboldt-Toiyabe National Forest7,656
Warm SpringsHumboldt-Toiyabe National Forest29,540
West Walker (NV)Humboldt-Toiyabe National Forest5,683
References (10)
  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. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  5. Idaho Native Plant Society. 1993. Federal candidate (C1 and C2) and listed rare plants of Idaho. unpaginated.
  6. Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 pp.
  7. 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.
  8. NatureServe. 2023. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  9. 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.
  10. Southwest Environmental Information Network (SEINet). 2023. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2023).