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Home/Species/ Alkali Mariposa Lily

Calochortus striatus

Parish

Alkali Mariposa Lily

G3Vulnerable Found in 7 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
HighThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.148520
Element CodePMLIL0D190
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderLiliales
FamilyLiliaceae
GenusCalochortus
Other Common Names
alkali mariposa lily (EN) Alkali Mariposa-lily (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 MethodLegacy Rank calculation - Excel v3.1x
Review Date2016-03-24
Change Date2016-03-24
Edition Date2016-03-24
Edition AuthorsJulie A. Greene (1987), rev. Maybury (1997), rev. L. Oliver (2003), rev. A. Tomaino (2009), rev. Bittman and Treher (2016)
Threat ImpactHigh
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Restricted to wetlands in arid regions of western southern California and southern Nevada. Approximately 100 extant occurrences. The species is threatened by groundwater draw-down, overuse by livestock, development, and exotic species.
Range Extent Comments
Occurs in southern California and southern Nevada: including sites in southern Sierra Nevada Mountains, Mojave Desert, northern edge of San Bernardino Mountains, San Joaquin Valley, and in southern Nevada.
Occurrences Comments
In California, there are approximately 100 extant occurrences. In Nevada, there are approximately 6 extant occurrences
Threat Impact Comments
Major threats are lowering water table, grazing, competition from weedy species, and land development (Greene and Sanders 1998). It is also threatened by road construction, military operations, dumping, and grading (CNDDB 2003).
Ecology & Habitat

Diagnostic Characteristics

Can be distinguished from other Calochortus species by subumbellate inflorescence and the oblong shape of the petal gland (nectary).

Habitat

Alkaline seeps, springs, and meadows. 800-1400 m elevation.

Ecology

Element is located in springs and alkaline meadows.
Palustrine Habitats
HERBACEOUS WETLAND
Other Nations (1)
United StatesN3
ProvinceRankNative
CaliforniaS2Yes
NevadaS1Yes
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (7)
California (5)
AreaForestAcres
ChannellSequoia National Forest45,429
ChicoSequoia National Forest39,836
Granite PeakSan Bernardino National Forest450
Greenhorn CreekSequoia National Forest28,226
SugarloafSan Bernardino National Forest8,206
Nevada (2)
AreaForestAcres
Lovell Summit SouthHumboldt-Toiyabe National Forest28,455
PotosiHumboldt-Toiyabe National Forest5,145
References (12)
  1. Bureau of Land Management (BLM). 1982. Sensitive species status report.
  2. California Department of Fish and Game. 2000. Natural Diversity Database (RareFind 2), Version 2.1.2, January 25, 2000. Downloaded in 2003.
  3. California Department of Fish and Game, Natural Diversity Data Base. 1995. Rare Find Report.
  4. California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
  5. Fiedler, P.L. 1996. Rare Lilies of California. California Native Plant Society Press, Sacramento, California. 154 pp.
  6. 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.
  7. Greene, J.A., and A.C. Sanders. 1998. Alkali mariposa lily, <i>Calochortus striatus. </i>California Desert District, Bureau of Land Management. [http://www.blm.gov/pgdata/etc/medialib//blm/ca/pdf/pdfs/cdd_pdfs.Par.9e181d28.File.pdf/alklily1.PDF]
  8. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  9. 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.
  10. Parish, S. B. 1902. Bull. So. Cal. Acad. 1: 122.
  11. Skinner, M.W., and B.M. Pavlik, eds. 1994. Inventory of rare and endangered vascular plants of California. 5th. edition. California Native Plant Society Special Publication No. 1.
  12. Tollefson, R. 1992. The Nature Conservancy Monitoring Report.