Taxon Report
Layia septentrionalis KeckColusa layia |
 © 2013 Jake Ruygt |
Classification
|
Scientific Name: |
Layia septentrionalis Keck |
|
Common Name: |
Colusa layia |
| Family: | Asteraceae |
| Element Code: | PDAST5N0F0 |
| USDA Plants Symbol: | LASE2 |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Apr-May | Apr-May |
| Elevation: | 100-1095 (330-3595) |
| General Habitats: | Chaparral, Cismontane woodland, Valley and foothill grassland |
| Microhabitat: | Sandy, Serpentine |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
|
State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_UCBG |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 69 |
| Element Occurrence Ranks: | |
| Excellent (A) | 7 |
| Good (B) | 7 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 1 |
| Unknown (U) | 54 |
| California Endemic: True | |
| 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) | |
Threat List Data from the CNDDB
| Threat List Total: | 7 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 10 | 14 % | |
| Road/trail construction/maint. | 5 | 7% |
| Development | 3 | 4% |
| Erosion/runoff | 1 | 1% |
| Grazing | 1 | 1% |
| Other | 1 | 1% |
| Agriculture | 1 | 1% |
| Biocides | 1 | 1% |
Selected References
|
Aliso 4(1):106 (1958) |
|
Layia septentrionalis profile for potential Species of Conservation Concern evaluation (2018) |
| USFS Potential Species of Conservation Concern Profile |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].