Taxon Report

Stylocline sonorensis Wiggins

mesquite neststraw

Print Report

Taxon Summary

Stylocline sonorensis, commonly known as mesquite neststraw, is a annual herb in the Asteraceae that is found in California and elsewhere. It occurs within Sonoran desert scrub, growing at elevations from 425 to 425 meters. Stylocline sonorensis is ranked 2A, Plants Presumed Extirpated in California, But More Common Elsewhere.

Classification


Scientific Name:	Stylocline sonorensis Wiggins
Common Name:	mesquite neststraw
Family:	Asteraceae
Element Code:	PDAST8Y060
USDA Plants Symbol:	STSO2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr	Apr
Elevation:	425-425 (1395-1395)
General Habitats:	Sonoran desert scrub
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2A
Global Rank:	G3G5
State Rank:	SX
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 1A to 2A on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	1
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	1
Unknown (U)	0

Location


California Endemic: False
California Counties and Islands: Name (Code)
Riverside (RIV)(?)
Quads: Name (Quad Code)
Hayfield (3311566)(?), Hayfield Spring (3311565)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	1	100 %
Development	1	100%

Notes



Known in CA from only a single collection (1930) at Hayfields Dry Lake. Possibly extirpated after 1930 by development. See Contributions from the Dudley Herbarium 4:26 (1950) for original description, and Madroño 35(3):279 (1988) for the CA record.
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 12 May 2025].