Species Details

Rorippa columbiae

Columbia yellow cress

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Classification

Scientific Name: Rorippa columbiae (Robinson) Howell
Common Name: Columbia yellow cress
Family:	Brassicaceae
Element Code:	PDBRA27060
USDA Plants Symbol:	ROCO3
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S2
Other Status:	BLM_S; USFS_S
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: May-Sep

Elevation:
1200 - 1800 meters
3935 - 5905 feet

General Habitats:

Lower montane coniferous forest
Meadows and seeps
Playas
Vernal pools

Microhabitat Details:

Microhabitat:

Mesic

Notes

Notes:
Threats: Threatened by grazing and trampling. Candidate for state listing in OR, and state-listed as Threatened in WA.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	11
	Total EOs	% of EOs
EOs with Threat Listed:	17	65 %
Grazing	13	50%
Foot traffic/trampling	9	34%
ORV activity	6	23%
Road/trail construction/maint.	5	19%
Non-native plant impacts	3	11%
Other	2	7%
Logging	2	7%
Biocides	2	7%
Development	1	3%
Altered flood/tidal/hydrologic regime	1	3%
Wood cutting or brush clearing	1	3%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					26
A	B	C	D	X	U
1	2	3	3	0	17

Occurrence Status:
Historical >20 Years	13
Recent <=20 Years	13

Presence:
Presumed Extant	26
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR), Washington (WA)

California Counties and Islands: Name (Code)
Humboldt (HUM), Lassen (LAS), Modoc (MOD), Siskiyou (SIS)

Quads: Name (Quad Code)
Big Sage Reservoir (4112056), Boles Meadows East (4112067), Bray (4112168), Captain Jacks Stronghold (4112175), Double Head Mtn. (4112172), Hambone (4112136), Horse Peak (4112147), Jacks Butte (4112057), MacDoel (4112271), Mahogany Ridge (4112055), Medicine Lake (4112155), Newell (4112183), Orleans (4112335), Pine Creek Valley (4012151), Pinnacle Lake (4112171), Rimrock Lake (4112162), Sagebrush Butte (4112181), The Panhandle (4112174), Tulelake (4112184)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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Selected References

Taxonomic Treatment:	Sida 4:294-296 (1972)
Species Account:	Rorippa columbiae profile for potential Species of Conservation Concern evaluation (2018)
Other:	USFS Potential Species of Conservation Concern Profile