Taxon Report

Hulsea mexicana Rydb.

Mexican hulsea

Print Report

Taxon Summary

Hulsea mexicana, commonly known as Mexican hulsea, is a annual/perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Chaparral (often burned areas or disturbed areas, and volcanic), growing at elevations from 1200 to 1200 meters. Hulsea mexicana is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Hulsea mexicana Rydb.
Common Name:	Mexican hulsea
Family:	Asteraceae
Element Code:	PDAST4Z050
USDA Plants Symbol:	HUME
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual/perennial herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	1200-1200 (3935-3935)
General Habitats:	Chaparral
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G3
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	3
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	3

Location


California Endemic: False
California Counties and Islands: Name (Code)
Imperial (IMP), San Diego (SDG)
Quads: Name (Quad Code)
In-ko-pah Gorge (3211661), Jacumba (3211662), Palomar Observatory (3311637), Warner Springs (3311636)

Threat List Data from the CNDDB


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

Notes



Known in U.S. from fewer than 5 occurrences. Easily confused with H. californica. See North American Flora 34:41 (1914) for original description, and Brittonia 27(3):228-244 (1975) for taxonomic treatment.
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 13 November 2025].