Taxon Report

Microseris borealis (Bong.) Sch.-Bip.

northern microseris

Print Report

Taxon Summary

Microseris borealis, commonly known as northern microseris, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Bogs and fens, Lower montane coniferous forest, and Meadows and seeps, growing at elevations from 1000 to 2000 meters. Microseris borealis is ranked 2B.1, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Microseris borealis (Bong.) Sch.-Bip.
Common Name:	northern microseris
Family:	Asteraceae
Element Code:	PDAST6E030
USDA Plants Symbol:	MIBO
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jun-Sep	Jun-Sep
Elevation:	1000-2000 (3280-6560)
General Habitats:	Bogs and fens, Lower montane coniferous forest, Meadows and seeps
Microhabitat:	Mesic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.1
Global Rank:	G5
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	IUCN_LC
CRPR Changes:	changed from 2.1 to 2B.1 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)	1
Unknown (U)	2

Location


California Endemic: False
California Counties and Islands: Name (Code)
Humboldt (HUM), Mendocino (MEN)*
Quads: Name (Quad Code)
Maple Creek (4012377), Mendocino (3912337)*

Threat List Data from the CNDDB


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

Notes



Known in CA from only two occurrences near Lake Prairie; old collection from Mendocino City (569D) is questionable. State-listed as Sensitive in WA.
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 20 June 2025].