Species Details

Plagiobothrys chorisianus var. chorisianus

Choris' popcornflower

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Species Description:

Plagiobothrys chorisianus var. chorisianus, commonly known as Choris' popcornflower, is a annual herb in the Boraginaceae that is found only in California. It occurs within Chaparral, Coastal prairie, and Coastal scrub, growing at elevations from 3 to 160 meters. Plagiobothrys chorisianus var. chorisianus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Scientific Name:
Plagiobothrys chorisianus (Chamb.) Jtn. var. chorisianus
Common Name:
Choris' popcornflower
Family: Boraginaceae
Element Code: PDBOR0V061
USDA Plants Symbol: PLCHC
Synonyms/Other Names:
Name Status: JEP, FNA, POWO,
IPNI, Tropicos
Lifeform: annual herb
Blooming Period: Mar-Jun
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Elevation:
3 - 160 meters
10 - 525 feet
General Habitats:
  • Chaparral
  • Coastal prairie
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Mesic
Notes:
Taxonomic work needed; intergrades with var. hickmanii, and differences may be environmentally induced. Threatened by development, foot traffic, and non-native plants.
Threats:
Taxonomy:
Threat List Total: 10
Total EOs % of EOs
EOs with Threat Listed: 17 40 %
THREAT LIST:
Non-native plant impacts 12 28%
Other 8 19%
Foot traffic/trampling 2 4%
Grazing 1 2%
Recreational use (non-ORV) 1 2%
Total Occurrences: 42
Element Occurrence Ranks:
A B C D X U
2 9 4 0 1 26
Occurrence Status:
Historical >20 Years 23
Recent <=20 Years 19
Presence:
Presumed Extant 41
Possibly Extirpated 0
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Alameda (ALA)(?), Monterey (MNT), San Francisco (SFO), San Mateo (SMT), Santa Clara (SCL), Santa Cruz (SCR)
Quads: Name (Quad Code)
Ano Nuevo (3712213), Big Basin (3712222), Davenport (3712212), Felton (3712211), Franklin Point (3712223), Half Moon Bay (3712244), La Honda (3712233), Laurel (3712118), Mindego Hill (3712232), Montara Mountain (3712254), Moss Landing (3612177), Oakland West (3712273)*, Palo Alto (3712242), Pigeon Point (3712224), Salinas (3612166), San Francisco North (3712274)(?), San Francisco South (3712264), San Gregorio (3712234), San Mateo (3712253), Watsonville West (3612187), 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.
Presumed Extant
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