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Pinguicula macroceras

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California Butterwort

G4Apparently Secure Found in 26 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
Least concernIUCN
MediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.139335
Element CodePDLNT01040
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderScrophulariales
FamilyLentibulariaceae
GenusPinguicula
Synonyms
Pinguicula vulgaris ssp. macroceras(Link) Calder & Taylor
Other Common Names
Western Butterwort (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.
Taxonomic Comments
Brouillet et al. (2025) and Douglas et al. (1999) recognize Pinguicula macroceras as a subspecies of P. vulgaris. Rice (2012) and Kartesz (1994, 1999) recognize it as a distinct species.
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2015-07-16
Change Date2016-05-20
Edition Date2015-07-16
Edition AuthorsBittman, R.
Threat ImpactMedium
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences81 - 300
Ecology & Habitat
Other Nations (2)
United StatesNNR
ProvinceRankNative
MontanaS3Yes
CaliforniaS2Yes
AlaskaS4Yes
WashingtonSNRYes
IdahoSNRYes
OregonSNRYes
CanadaN5
ProvinceRankNative
British ColumbiaS5Yes
AlbertaSNRYes
Yukon TerritorySUYes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (26)
Alaska (3)
AreaForestAcres
North RevillaTongass National Forest215,430
RevillaTongass National Forest29,298
South RevillaTongass National Forest52,105
California (10)
AreaForestAcres
Blue Creek Rare ISix Rivers National Forest12,134
KellySix Rivers National Forest5,195
Monkey CreekSix Rivers National Forest9,017
North Fork SmithSix Rivers National Forest37,898
PacksaddleSix Rivers National Forest3,862
Ship MountainSix Rivers National Forest11,936
SiskiyouKlamath National Forest54,039
Siskiyou BSix Rivers National Forest18,871
Slide CreekSix Rivers National Forest11,458
South KalmiopsisSix Rivers National Forest321
Oregon (3)
AreaForestAcres
Hurricane CreekWallowa-Whitman National Forest1,606
North KalmiopsisSiskiyou National Forests91,560
South KalmiopsisSiskiyou National Forests104,477
Washington (10)
AreaForestAcres
Eagle RockMt Baker-Snoqualmie National Forest34,064
Glacier Peak KMt Baker-Snoqualmie National Forest47,269
Glacier Peak LMt Baker-Snoqualmie National Forest14,084
Jefferson RidgeOlympic National Forest6,512
Liberty BellOkanogan National Forest108,495
Mt. Baker NorthMt Baker-Snoqualmie National Forest16,873
Mt. Baker WestMt Baker-Snoqualmie National Forest25,390
QuilceneOlympic National Forest18,656
SawtoothOkanogan National Forest122,194
TeanawayWenatchee National Forest72,849
References (6)
  1. Brouillet, L., F. Coursol, S. Meades, M. Favreau, and M. Anions. 2025. VASCAN, the Database of Vascular Plants of Canada. Online. Available: http://data.canadensys.net/vascan/ (Accessed 2025).
  2. Douglas, G.W., D. Meidinger, and J. Pojar, editors. 1999. Illustrated Flora of British Columbia. Volume 3. Dicotyledons (Diapensiaceae through Onagraceae). British Columbia Ministry of Environment, Lands and Parks, and British Columbia Ministry of Forests, Victoria.
  3. 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.
  4. 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.
  5. Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.
  6. Rice, B.A. 2012. Pinguicula, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=10568.