Taxon Report

Rorippa columbiae (Robinson) Howell

Columbia yellow cress

Print Report


©2013 Justy Leppert

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

Ecology and Life History
Lifeform: perennial rhizomatous herb
Blooming Period: May-Sep May-Sep
Elevation: 1200-1800 (3935-5905)
General Habitats: Lower montane coniferous forest, Meadows and seeps, Playas, Vernal pools
Microhabitat: Mesic
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G3
State Rank:
 S2
State List: None
Fed List: None
Other Status: BLM_S; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 26
Element Occurrence Ranks:
   Excellent (A) 1
   Good (B) 2
   Fair (C) 3
   Poor (D) 3
   None (X) 0
   Unknown (U) 17

Location
California Endemic:  False
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)

Threat List Data from the CNDDB

Threat List Total: 11
EOs with Threat Listed: Total EOs % of EOs
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%

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

Selected References

Sida 4:294-296 (1972)
Rorippa columbiae profile for potential Species of Conservation Concern evaluation (2018)
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 28 December 2024].