Species Details

Plagiobothrys strictus

Calistoga popcornflower

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Scientific Name:
Plagiobothrys strictus (Greene) Jtn.
Common Name:
Calistoga popcornflower
Family: Boraginaceae
Element Code: PDBOR0V120
USDA Plants Symbol: PLST2
Synonyms/Other Names:
Lifeform: annual herb
Blooming Period: Mar-Jun
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Elevation:
90 - 160 meters
295 - 525 feet
General Habitats:
  • Meadows and seeps
  • Valley and foothill grassland
  • Vernal pools
Microhabitat Details: alkaline areas near thermal springs
Microhabitat:
  • Alkaline
Notes:
Known from only two extant occurrences near Calistoga. Threatened by urbanization, recreational activities, and airport maintenance.
Threats:
Taxonomy:
Threat List Total: 3
Total EOs % of EOs
EOs with Threat Listed: 2 67 %
THREAT LIST:
Development 2 66%
Other 2 66%
Road/trail construction/maint. 1 33%
Total Occurrences: 3
Element Occurrence Ranks:
A B C D X U
0 2 0 0 0 1
Occurrence Status:
Historical >20 Years 1
Recent <=20 Years 2
Presence:
Presumed Extant 3
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Napa (NAP)
Quads: Name (Quad Code)
Calistoga (3812255)
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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