Taxon Report

Hymenoxys lemmonii (E. Greene) Cockerell

alkali hymenoxys

Print Report

Taxon Summary

Hymenoxys lemmonii, commonly known as alkali hymenoxys, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Great Basin scrub, Lower montane coniferous forest, and Meadows and seeps (subalkaline), growing at elevations from 240 to 3390 meters. Hymenoxys lemmonii is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Hymenoxys lemmonii (E. Greene) Cockerell
Common Name:	alkali hymenoxys
Family:	Asteraceae
Element Code:	PDAST530C0
USDA Plants Symbol:	HYLE
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: (May)Jun-Aug(Sep)	(May)Jun-Aug(Sep)
Elevation:	240-3390 (785-11125)
General Habitats:	Great Basin scrub, Lower montane coniferous forest, Meadows and seeps
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G4
State Rank:	S2S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	13
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	13

Location


California Endemic: False
California Counties and Islands: Name (Code)
Modoc (MOD), Plumas (PLU), Sierra (SIE), Siskiyou (SIS)
Quads: Name (Quad Code)
Ash Creek Butte (4112241), China Mtn. (4112245), Dog Valley (3912051), Gazelle (4112255), Hotlum (4112243), Juniper Flat (4112253), Little Shasta (4112264), Montague (4112265), Mt. Shasta (4112242), Reconnaissance Peak (3912073), Sardine Peak (3912052), Snake Lake (4112021), The Whaleback (4112252), Weed (4112244), West Haight Mtn. (4112251), Yreka (4112266)

Threat List Data from the CNDDB


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

Notes



Need quads for SHA Co. Threatened by development and agriculture. See Pittonia 3:272 (1898) for original description, and Bulletin of the Torrey Botanical Club 31(9):477 (1904) for original description.
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 30 January 2025].