Species Details

Plagiobothrys strictus

Calistoga popcornflower

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Classification

Scientific Name: Plagiobothrys strictus (Greene) Jtn.
Common Name: Calistoga popcornflower
Family:	Boraginaceae
Element Code:	PDBOR0V120
USDA Plants Symbol:	PLST2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FE (1997-10-22)
State List:	CT (1990-01-01)
Global Rank:	G1
State Rank:	S1
Other Status:	SB_UCBG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2024-10-02

Ecology and Life History

Lifeform: annual herb

Blooming Period: Mar-Jun

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

Notes:
Threats: Threatened by urbanization, recreational activities, non-native plants, and airport maintenance.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	2	67 %
Development	2	66%
Other	2	66%
Road/trail construction/maint.	1	33%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
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

Location

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.

Regional Map

Map

Presumed Extant

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory