Species Details

Calochortus clavatus var. avius

Pleasant Valley mariposa-lily

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Scientific Name:
Calochortus clavatus Wats. var. avius Jeps.
Common Name:
Pleasant Valley mariposa-lily
Family: Liliaceae
Element Code: PMLIL0D095
USDA Plants Symbol: CACLA
Synonyms/Other Names:
Lifeform: perennial bulbiferous herb
Blooming Period: May-Jul
JFMAMJJASOND
Elevation:
305 - 1800 meters
1000 - 5905 feet
General Habitats:
  • Lower montane coniferous forest (Josephine silt loam, volcanic)
Microhabitat Details:
Microhabitat:
Notes:
Threatened by development and logging, and possibly by horticultural collecting. Potentially threatened by pipeline construction. 508B (Old Iron Mountain) former quad name is Stump Spring, CA.
Threats:
Taxonomy:
Threat List Total: 17
Total EOs % of EOs
EOs with Threat Listed: 104 79 %
THREAT LIST:
Logging 91 69%
Road/trail construction/maint. 35 26%
Grazing 30 22%
Erosion/runoff 14 10%
ORV activity 10 7%
Total Occurrences: 131
Element Occurrence Ranks:
A B C D X U
7 37 19 6 1 61
Occurrence Status:
Historical >20 Years 63
Recent <=20 Years 68
Presence:
Presumed Extant 130
Possibly Extirpated 1
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Amador (AMA), Calaveras (CAL), El Dorado (ELD), Mariposa (MPA)*, Placer (PLA)
Quads: Name (Quad Code)
Caldor (3812054), Camino (3812066), Devil Peak (3812085), Devils Nose (3812044), Dorrington (3812033), Garnet Hill (3812043), Illinois Hill (3712031)*, Kyburz (3812073), Omo Ranch (3812055), Peddler Hill (3812053), Pollock Pines (3812075), Riverton (3812074), Sly Park (3812065), Stump Spring, Calif. (3812064)
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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