Species Details

Lessingia arachnoidea

Crystal Springs lessingia

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Lifeform: annual herb
Blooming Period: Jul-Oct
Elevation:
60 - 200 meters
195 - 655 feet
General Habitat:
  • Cismontane woodland
  • Coastal scrub
  • Valley and foothill grassland
General Micro Habitat: serpentinite, often roadsides
Micro Habitat:
Notes:
Known only from near Crystal Springs Reservoir (SMT Co.); occurrences from SON Co. (502B, 518C) need taxonomic verification. Threatened by non-native plants and pipeline maintenance. See Leaflets of Botanical Observation and Criticism 2:29 (1910) for original description.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 11
Element Occurrence Ranks:
A B C D X U
2 4 2 0 0 3
Occurrence Status:
Historical >20 Years 4
Recent <=20 Years 7
Presence:
Presumed Extant 11
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
San Mateo (SMT), Sonoma (SON)
Quads: Name (Quad Code)
Camp Meeker (3812248), Duncans Mills (3812341), Montara Mountain (3712254), San Mateo (3712253), Woodside (3712243)
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.

Map

Presumed Extant
Counties   Quads