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Home/Species/ Siskiyou Fritillary

Fritillaria glauca

Greene

Siskiyou Fritillary

G3Vulnerable (G3G4) Found in 23 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.155608
Element CodePMLIL0V090
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderLiliales
FamilyLiliaceae
GenusFritillaria
Other Common Names
Siskiyou Fritillaria (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
Review Date2008-12-22
Change Date2008-12-22
Edition Date2009-05-12
Edition AuthorsGravuer, K.
Threat ImpactUnknown
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Restricted to northwestern California and southwestern Oregon; occurs in Douglas County and the Siskiyou Mountains in Oregon and in the adjacent North Coast, Klamath Ranges, and North Coast Ranges regions of California. Approximately 60-80 occurrences are believed extant in Oregon; occurrences have not been mapped in California. Occurs predominantly on serpentine talus slopes.Considered "fairly endangered" in California, where threatened by vehicles. Threats in Oregon include road construction and maintenance, mining, trampling, and erosion/rock slides.
Range Extent Comments
Restricted to northwestern California and southwestern Oregon. In Oregon, known from southern Douglas County south through the Siskiyou Mountains in Jackson, Josephine and Curry Counties. In California, known from the North Coast, Klamath Ranges, and North Coast Ranges (Hickman 1993). Confirmed in Colusa, Del Norte, Glenn, Lake, Mendocino, Shasta, Tehama, and Trinity counties (CNPS 2009); has also been reported from Siskiyou and Humboldt counties.
Occurrences Comments
Approximately 83 occurrences have been mapped in Oregon, about 20 of which have not been observed recently. Occurrences have not been mapped in California; approximately 18 distinct specimens are present in the Consortium of California Herbaria database (2009), 8 of which have been collected since 1980. Additional California sites might be found with targeted field survey.
Threat Impact Comments
Considered "fairly endangered" in California, where threatened by vehicles (CNPS 2009). Threats in Oregon include road construction and maintenance, mining, trampling, and erosion/rock slides.
Ecology & Habitat

Diagnostic Characteristics

Stigmas separate, flowers 1-3, leaves 2-4.

Habitat

Barren, dry, rocky slopes (including talus slopes) within upper montane coniferous forest, subalpine coniferous forest, and alpine boulder and rock field communities. Often on serpentine; rated as a broad endemic/strong indicator of serpentine substrates by Safford et al. (2005) (75-84% of occurrences on ultramafics). Habitat is also described as serpentine barrens. 600--2440 m.
Terrestrial Habitats
Forest/WoodlandForest - ConiferAlpineBarrensBare rock/talus/scree
Other Nations (1)
United StatesN3
ProvinceRankNative
OregonS3Yes
CaliforniaS3Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (23)
California (19)
AreaForestAcres
Black ButteMendocino National Forest15,461
Blue Creek Rare ISix Rivers National Forest12,134
Board CampSix Rivers National Forest4,527
ChanchelullaShasta-Trinity National Forest3,915
East ForkShasta-Trinity National Forest6,201
Elk CreekMendocino National Forest23,182
GrindstoneMendocino National Forest26,031
Lake EleanorShasta-Trinity National Forest397
Mt. EddyShasta-Trinity National Forest7,232
Mt. LassicSix Rivers National Forest6,643
SiskiyouKlamath National Forest54,039
Siskiyou BSix Rivers National Forest18,871
Slide CreekSix Rivers National Forest11,458
Snow MountainMendocino National Forest14,457
SoliderSix Rivers National Forest14,918
South ForkShasta-Trinity National Forest16,786
ThatcherMendocino National Forest16,652
Weaver BallyShasta-Trinity National Forest829
Wilderness ContiguousMendocino National Forest3,606
Oregon (4)
AreaForestAcres
Bulldog RockUmpqua National Forest6,056
Bulldog RockWillamette National Forest559
North KalmiopsisSiskiyou National Forests91,560
South KalmiopsisSiskiyou National Forests104,477
References (5)
  1. California Native Plant Society (CNPS). 2009. Inventory of Rare and Endangered Plants. California Native Plant Society. Sacramento, CA. Online. Available: http://www.cnps.org/inventory (accessed 2009).
  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. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  4. 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.
  5. Safford, H. D., J. H. Viers, and S. P. Harrison. 2005. Serpentine endemism in the California flora: A database of serpentine affinity. Madroño 52(4): 222-257.