Species Details

Calochortus tiburonensis

Tiburon mariposa-lily

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Scientific Name:
Calochortus tiburonensis Hill
Common Name:
Tiburon mariposa-lily
Family: Liliaceae
Element Code: PMLIL0D1C0
USDA Plants Symbol: CATI3
Synonyms/Other Names:
Lifeform: perennial bulbiferous herb
Blooming Period: Mar-Jun
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Elevation:
50 - 150 meters
165 - 490 feet
General Habitats:
  • Valley and foothill grassland (serpentinite)
Microhabitat Details:
Microhabitat:
Notes:
Known from only one occurrence at Ring Mtn. Preserve on the Tiburon Peninsula. Threatened by recreational activities and non-native plants. Potentially threatened by deer browsing. See MadroƱo 22(2):100-104 (1973) for original description, and Journal of Ecology 75:977-995 (1987) for population biology.
Threats:
Taxonomy:
Threat List Total: 2
Total EOs % of EOs
EOs with Threat Listed: 1 100 %
THREAT LIST:
Foot traffic/trampling 1 100%
Non-native plant impacts 1 100%
Total Occurrences: 1
Element Occurrence Ranks:
A B C D X U
1 0 0 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 1
Presence:
Presumed Extant 1
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Marin (MRN)
Quads: Name (Quad Code)
San Quentin (3712284)
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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