Taxon Report

Collomia larsenii (Gray) Payson

talus collomia

Print Report

© 2009 Leigh Johnson

Classification


Scientific Name:	Collomia larsenii (Gray) Payson
Common Name:	talus collomia
Family:	Polemoniaceae
Element Code:	PDPLM02014
USDA Plants Symbol:	COLA8
Synonyms/Other Names:	Collomia debilis (Wats.) Greene var. larsenii (Gray) Brand

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: Jul-Sep(Oct)	Jul-Sep(Oct)
Elevation:	2210-3500 (7250-11485)
General Habitats:	Alpine boulder and rock field, Closed-cone coniferous forest, Subalpine coniferous forest, Upper montane coniferous forest
Microhabitat:	Talus, Volcanic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G4
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	USFS_S
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	3
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	1
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	1

Location


California Endemic: False
California Counties and Islands: Name (Code)
Shasta (SHA), Siskiyou (SIS)
Quads: Name (Quad Code)
Lassen Peak (4012145), Little Glass Mtn. (4112156), Thousand Lakes Valley (4012165)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	2	67 %
Foot traffic/trampling	2	66%
Road/trail construction/maint.	1	33%

Notes



Known in CA from fewer than five occurrences. Threatened by foot traffic. On watch list in OR.
Threats:

Taxonomy:

Selected References

USFS Potential Species of Conservation Concern Profile

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].