Species Details

Plagiobothrys hystriculus

bearded popcornflower

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Classification

Scientific Name: Plagiobothrys hystriculus (Piper) Jtn.
Common Name: bearded popcornflower
Family:	Boraginaceae
Element Code:	PDBOR0V0H0
USDA Plants Symbol:	PLHY
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:
CRPR Changes: changed from 1A to 1B.1 on 2006-06-08
Add Date:	1974-01-01
Date Edited:	2022-06-08

Ecology and Life History

Lifeform: annual herb

Blooming Period: Apr-May

Elevation:
0 - 274 meters
0 - 900 feet

General Habitats:

Valley and foothill grassland (mesic)
Vernal pools (margins)

Microhabitat Details: often vernal swales

Microhabitat:

Notes

Notes: Rediscovered in 2005 by B. Schafer, M. Widdowson, and R. Preston; last seen in 1892. Easily confused with P. acanthocarpus, P. trachycarpus, and others. Threatened by disking, development, and non-native plants. See Contributions of the U.S. National Herbarium 22:79-113 (1920) for original description, Contributions from the Arnold Arboretum 3:5-82 (1932) for revised nomenclature, and Madroño 57(4):242-245 (2010) for discussion of rediscovery.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	5
	Total EOs	% of EOs
EOs with Threat Listed:	6	40 %
Non-native plant impacts	3	20%
Other	2	13%
Disking	2	13%
Development	1	6%
Road/trail construction/maint.	1	6%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					15
A	B	C	D	X	U
3	4	1	0	0	7

Occurrence Status:
Historical >20 Years	4
Recent <=20 Years	11

Presence:
Presumed Extant	15
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Napa (NAP), Solano (SOL), Yolo (YOL)

Quads: Name (Quad Code)
Allendale (3812148), Antioch North (3812117), Birds Landing (3812127), Denverton (3812128), Dozier (3812137), Elmira (3812138), Knoxville (3812273), Saxon (3812146)

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

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Selected References

CNPS Status Review:

CRPR List Change on 2006-06-08