Roadless Areas
Home/Species/ Shirley Meadows Star-tulip

Calochortus westonii

Eastw.

Shirley Meadows Star-tulip

G3Vulnerable Found in 11 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
MediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.142535
Element CodePMLIL0D1M0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderLiliales
FamilyLiliaceae
GenusCalochortus
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 Date2016-12-07
Change Date2016-12-07
Edition Date2005-11-16
Edition AuthorsMaybury, K., rev. R. Bittman 2005, rev. R. Bittman (2016)
Threat ImpactMedium
Range Extent250-1000 square km (about 100-400 square miles)
Number of Occurrences21 - 80
Rank Reasons
Endemic to the Greenhorn Mountains of the southern Sierra Nevada in California in Kern and Tulare counties. Locally abundant in Sequioa National Forest. About 24 occurrences are known. Threats include logging, development of ski resort, roads and fuelbreaks, but none of these are considered severe at this time.
Range Extent Comments
The range extends through Kern and Tulare counties and is subdivided into three main areas.
Occurrences Comments
There are 24 mapped occurrences (no backlog) (CNDDB 2016). 20 need rechecking, but are probably still extant.
Threat Impact Comments
Threats include logging, roads, grazing, ski area, wood cutting, fire-related issues (fuel breaks, too hot/too frequent, etc) (CNDDB 2016).
Ecology & Habitat

Habitat

Open conifer-oak woodlands and woodland edges and meadows. 1500-2000 m elevation.
Terrestrial Habitats
Forest/WoodlandWoodland - MixedSavannaGrassland/herbaceous
Other Nations (1)
United StatesN3
ProvinceRankNative
CaliforniaS3Yes
Threat Assessments
ThreatScopeSeverityTiming
2 - Agriculture & aquaculture———
2.3 - Livestock farming & ranching———
4 - Transportation & service corridors———
4.1 - Roads & railroads———
5 - Biological resource use———
5.3 - Logging & wood harvesting———
6 - Human intrusions & disturbance———
6.1 - Recreational activities———
7 - Natural system modifications———
7.1 - Fire & fire suppression———

—

Plant Characteristics
Economic Value (Genus)No
Roadless Areas (11)
California (11)
AreaForestAcres
Black Mtn.Sequoia National Forest15,102
ChannellSequoia National Forest45,429
ChicoSequoia National Forest39,836
Greenhorn CreekSequoia National Forest28,226
Lion RidgeSequoia National Forest5,265
Mill CreekSequoia National Forest27,643
MosesSequoia National Forest22,077
RinconSequoia National Forest54,610
Slate Mtn.Sequoia National Forest12,299
WoodpeckerSequoia National Forest11,936
WoolstaffSequoia National Forest41,445
References (5)
  1. California Natural Diversity Database (CNDDB). 2016. RareFind Version 5.1.1. California Department of Fish and Game, Sacramento.
  2. Fiedler, P.L. 1996. Rare Lilies of California. California Native Plant Society Press, Sacramento, California. 154 pp.
  3. 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.
  4. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  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.