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Calochortus catalinae

S. Wats.

Catalina Mariposa Lily

G3Vulnerable (G3G4) Found in 15 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
High - mediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.139503
Element CodePMLIL0D080
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderLiliales
FamilyLiliaceae
GenusCalochortus
Synonyms
Mariposa catalinae(S. Watson) Hoover
Other Common Names
Santa Catalina mariposa lily (EN) Santa Catalina 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 Method Rank calculation - Biotics v2
Review Date2024-08-22
Change Date2024-08-22
Edition Date2024-08-22
Edition AuthorsBittman, R. (2014, 2017), rev. Eberly (2024)
Threat ImpactHigh - medium
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Calochortus catalinae is a perennial herb that is endemic to southern California and the Channel Islands in the United States where there are possibly 200 or more occurrences. Development is a concern over the range of this species.
Range Extent Comments
Calochortus catalinae is endemic to southern California and the Channel Islands in the United States. There are reports of this species in Baja California, Mexico (iNaturalist 2024). Range extent was estimated using herbarium specimens collected between 1993 and 2024 (GBIF 2024, iNaturalist 2024).
Occurrences Comments
By applying a 1 km separation distance to herbarium records documented between 1993 and 2024, it is estimated that there are between 81 and 300 occurrences rangewide (GBIF 2024, iNaturalist 2024), but likely over 200 occurrences based on data from 2004 to 2024 alone.
Threat Impact Comments
Development is the primary threat to this species.
Ecology & Habitat

Habitat

This species grows in heavy soils of grasslands or scrub (Jepson Flora Project 2024).
Terrestrial Habitats
Shrubland/chaparralGrassland/herbaceous
Other Nations (1)
United StatesN3
ProvinceRankNative
CaliforniaS3Yes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentLarge - restrictedExtreme - seriousHigh (continuing)

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Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (15)
California (15)
AreaForestAcres
CamuesaLos Padres National Forest8,209
De La GuerraLos Padres National Forest5,418
DiableLos Padres National Forest19,597
Dry LakesLos Padres National Forest17,043
La BreaLos Padres National Forest14,031
Malduce BuckhornLos Padres National Forest14,177
ManzanaLos Padres National Forest2,101
MatilijaLos Padres National Forest5,218
MonoLos Padres National Forest28,141
NordhoffLos Padres National Forest12,031
Santa CruzLos Padres National Forest21,182
Sespe - FrazierLos Padres National Forest106,910
TequepisLos Padres National Forest9,080
TrabucoCleveland National Forest23,341
White LedgeLos Padres National Forest18,632
References (5)
  1. 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.
  2. Global Biodiversity Information Facility (GBIF). 2024. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2024).
  3. iNaturalist. 2024. Online. Available: https://www.inaturalist.org (accessed 2024).
  4. Jepson Flora Project (eds.) 2024. Jepson eFlora. Online. Available: https://ucjeps.berkeley.edu/eflora/ (accessed 2024).
  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.