Taxon Report

Plagiobothrys glyptocarpus (Piper) Jtn. var. modestus Jtn.

Cedar Crest popcornflower

Print Report

Taxon Summary

Plagiobothrys glyptocarpus var. modestus, commonly known as Cedar Crest popcornflower, is a annual herb in the Boraginaceae that is found only in California. It occurs within Cismontane woodland, and Valley and foothill grassland (mesic), growing at elevations from 870 to 870 meters. Plagiobothrys glyptocarpus var. modestus is ranked 3, Plants About Which We Need More Information, A Review List.

Classification


Scientific Name:	Plagiobothrys glyptocarpus (Piper) Jtn. var. modestus Jtn.
Common Name:	Cedar Crest popcornflower
Family:	Boraginaceae
Element Code:	PDBOR0V0C2
USDA Plants Symbol:	PLGLM
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	870-870 (2855-2855)
General Habitats:	Cismontane woodland, Valley and foothill grassland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	3
Global Rank:	G3THQ
State Rank:	SH
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	0
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
Tehama (TEH), Yuba (YUB)?
Quads: Name (Quad Code)
Dewitt Peak (4012128), Oregon House (3912133)?

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Move to List 1A? Occurrence from YUB Co. needs verification. Apparently not collected since 1937; field surveys needed. May be a minor variant or hybrid. Position in the P. glyptocarpus/P. distantiflorus complex needs study.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 24 October 2025].