Species Details

Layia septentrionalis

Colusa layia

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Photo of Layia septentrionalis
© 2013 Jake Ruygt
Photo of Layia septentrionalis
© 2020 Zoya Akulova
Photo of Layia septentrionalis
© 2013 Jake Ruygt
Lifeform: annual herb
Blooming Period: Apr-May
Elevation:
100 - 1095 meters
330 - 3595 feet
General Habitat:
  • Chaparral
  • Cismontane woodland
  • Valley and foothill grassland
General Micro Habitat:
Micro Habitat:
  • Sandy
  • Serpentinite
Notes:
Historical occurrences need field surveys.
Threats:

Threatened by development.

Taxonomy:
Other:
Total Occurrences: 69
Element Occurrence Ranks:
A B C D X U
7 7 0 0 1 54
Occurrence Status:
Historical >20 Years 39
Recent <=20 Years 30
Presence:
Presumed Extant 68
Possibly Extirpated 1
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Butte (BUT), Colusa (COL), Glenn (GLE), Lake (LAK), Mendocino (MEN), Napa (NAP), Sonoma (SON), Sutter (SUT), Tehama (TEH), Yolo (YOL)
Quads: Name (Quad Code)
Aetna Springs (3812264), Arbuckle (3912211), Benmore Canyon (3912215), Cherokee (3912165), Chiles Valley (3812253), Cloverdale (3812371), Detert Reservoir (3812265), Dunnigan (3812188), Elk Creek (3912255), Gilmore Peak (3912235), Glascock Mtn. (3812283), Grimes (3912118), Highland Springs (3812288), Hopland (3812381), Jericho Valley (3812274), Kelseyville (3812287), Kenwood (3812245)*, Knoxville (3812273), Lakeport (3912218), Leesville (3912224), Lower Lake (3812285), Lucerne (3912217), Monticello Dam (3812251), Paskenta (3912285), Purdys Gardens (3912311), Rail Canyon (3912244), Riley Ridge (3912286), Rumsey (3812282), Santa Rosa (3812246), St. Helena (3812254), Stonyford (3912245), Sutter Buttes (3912127), The Geysers (3812277), Walter Springs (3812263), Whispering Pines (3812276), Wilbur Springs (3912214), Wildwood School (3812281), Wilson Valley (3812284)
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