Species Details

Calochortus pulchellus

Mt. Diablo fairy-lantern

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Scientific Name:
Calochortus pulchellus Benth.
Common Name:
Mt. Diablo fairy-lantern
Family: Liliaceae
Element Code: PMLIL0D160
USDA Plants Symbol: CAPU2
Synonyms/Other Names:
Lifeform: perennial bulbiferous herb
Blooming Period: Apr-Jun
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Elevation:
30 - 840 meters
100 - 2755 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
  • Riparian woodland
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
Notes:
Threatened by grazing, urbanization, horticultural collection, and feral pigs. Potentially threatened by road maintenance. See Proceedings of the California Academy of Sciences III 2:118 (1901) for taxonomic treatment, and Journal of Ecology 75:977-995 (1987) for population biology.
Threats:
Taxonomy:
Threat List Total: 14
Total EOs % of EOs
EOs with Threat Listed: 21 40 %
THREAT LIST:
Road/trail construction/maint. 10 19%
Foot traffic/trampling 6 11%
Grazing 6 11%
Non-native plant impacts 4 7%
Erosion/runoff 3 5%
Total Occurrences: 52
Element Occurrence Ranks:
A B C D X U
2 17 5 2 0 26
Occurrence Status:
Historical >20 Years 29
Recent <=20 Years 23
Presence:
Presumed Extant 52
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Alameda (ALA), Contra Costa (CCA)
Quads: Name (Quad Code)
Antioch South (3712187), Benicia (3812212), Briones Valley (3712282), Byron Hot Springs (3712176), Clayton (3712188), Diablo (3712178), Las Trampas Ridge (3712271), Tassajara (3712177), Walnut Creek (3712281)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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