Taxon Report

Polyctenium fremontii (Wats.) Greene var. fremontii

Fremont's combleaf

Print Report

Taxon Summary

Polyctenium fremontii var. fremontii, commonly known as Fremont's combleaf, is a perennial herb in the Brassicaceae that is found in California and elsewhere. It occurs within Great Basin scrub, Lower montane coniferous forest, Meadows and seeps, Pinyon and juniper woodland, and Playas, growing at elevations from 1000 to 2060 meters. Polyctenium fremontii var. fremontii is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Polyctenium fremontii (Wats.) Greene var. fremontii
Common Name:	Fremont's combleaf
Family:	Brassicaceae
Element Code:	PDBRA23012
USDA Plants Symbol:	POFRF2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Apr-Jul	Apr-Jul
Elevation:	1000-2060 (3280-6760)
General Habitats:	Great Basin scrub, Lower montane coniferous forest, Meadows and seeps, Pinyon and juniper woodland, Playas
Microhabitat:	Mesic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G4T4
State Rank:	S4
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	removed from 4.3 on 2012-02-08

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: False
California Counties and Islands: Name (Code)
Lassen (LAS), Plumas (PLU), Sierra (SIE), Siskiyou (SIS)
Quads: Name (Quad Code)
Anderson Mtn. (4012085), Buckhorn Canyon (4012071), Buckhorn Lake (4012081), Champs Flat (4012068), Chilcoot (3912072), Cleghorn Flat (4012075), Dorris (4112188), Gallatin Peak (4012056), Johnstonville (4012045), Karlo (4012053), Lake Shastina (4112254), Loyalton (3912062), McDonald Peak (4012084), Ravendale (4012073), Termo (4012074)

Threat List Data from the CNDDB


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

Notes



See P. fremontii in TJM 2; where P. williamsiae is treated as a synonym. See Proceedings of the American Academy of Arts and Sciences 11:123 (1876) for original description, Leaflets of Botanical Observation and Criticism 2:219 (1912) for revised nomenclature, and Intermountain Flora 2B:416-419 (2005) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

CRPR List Deletion on 2012-02-08

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 7 December 2025].