Species Details

Plagiobothrys diffusus

San Francisco popcornflower

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Scientific Name:
Plagiobothrys diffusus (Greene) Jtn.
Common Name:
San Francisco popcornflower
Family: Boraginaceae
Element Code: PDBOR0V080
USDA Plants Symbol:
Synonyms/Other Names:
Lifeform: annual herb
Blooming Period: Mar-Jun
Elevation:
60 - 360 meters
195 - 1180 feet
General Habitat:
  • Coastal prairie
  • Valley and foothill grassland
General Micro Habitat:
Micro Habitat:
Notes:
Threatened by development and non-native plants. Possibly threatened by grazing and vehicles. Identification difficult; taxonomic work needed. See P. reticulatus var. rossianorum in The Jepson Manual. See Pittonia 1:14 (1887) for original description, and Contributions from the Arnold Arboretum 3:77 (1932) for revised nomenclature.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 17
Element Occurrence Ranks:
A B C D X U
2 6 5 0 1 3
Occurrence Status:
Historical >20 Years 10
Recent <=20 Years 7
Presence:
Presumed Extant 16
Possibly Extirpated 0
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Alameda (ALA), San Benito (SBT), San Francisco (SFO)*, San Mateo (SMT), Santa Cruz (SCR)
Quads: Name (Quad Code)
Ano Nuevo (3712213), Davenport (3712212), Felton (3712211), Franklin Point (3712223), Laurel (3712118), Oakland East (3712272), San Francisco North (3712274)*, San Juan Bautista (3612175), Santa Cruz (3612281), Watsonville West (3612187)
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