Species Details

Helianthus exilis

serpentine sunflower

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Scientific Name:
Helianthus exilis Gray
Common Name:
serpentine sunflower
Family: Asteraceae
Element Code: PDAST4N1J0
USDA Plants Symbol:
Synonyms/Other Names:
Lifeform: annual herb
Blooming Period: Jun-Nov
Elevation:
150 - 1525 meters
490 - 5005 feet
General Habitat:
  • Chaparral
  • Cismontane woodland
General Micro Habitat: serpentinite seeps
Micro Habitat:
Notes:
Difficult to distinguish from H. bolanderi; see this name in TJM (1993). See Oikos 84:69-76 (1999) for information on distribution.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 0
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 0
Presence:
Presumed Extant 0
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Colusa (COL), Glenn (GLE), Lake (LAK), Mendocino (MEN), Napa (NAP), Santa Clara (SCL), Shasta (SHA), Siskiyou (SIS), Sonoma (SON), Tehama (TEH), Trinity (TRI)
Quads: Name (Quad Code)
Aetna Springs (3812264), Black Rock Mtn. (4012321), Brushy Mtn. (3912352), Callahan (4112237), Chicken Hawk Hill (4112214), Chiles Valley (3812253), China Mtn. (4112245), Covington Mill (4012287), Detert Reservoir (3812265), Dubakella Mtn. (4012342), Gilmore Peak (3912235), Hall Ridge (3912276), Jamison Ridge (3912362), Jericho Valley (3812274), Jimtown (3812267), Knoxville (3812273), Leesville (3912224), Middletown (3812275), Mineral (4012135), Newville (3912275), Pony Buck Peak (4012331), Rackerby (3912143), Riley Ridge (3912286), Rutherford (3812244), Salt Canyon (3912213), Santa Teresa Hills (3712127), Scott Mountain (4112236), Smoky Creek (4012332), St. Helena (3812254), Stonyford (3912245), Tangle Blue Lake (4112226), Trinity Center (4012286), Walter Springs (3812263), Whispering Pines (3812276), Wilbur Springs (3912214), Wildwood (4012341)
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