Species Details

Carex halliana

Oregon sedge

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Photo of Carex halliana
©2010 Keir Morse
Photo of Carex halliana
©2019 Matt C. Berger
CA Rare Plant Rank: 2B.3
Fed List: None
State List: None
Global Rank: G4G5
State Rank:
S2
Other Status:
CRPR Changes:
changed from 2.3 to 2B.3 on 2013-06-12
Add Date: 1980-01-01
Date Edited: 2022-09-06
Lifeform: perennial rhizomatous herb
Blooming Period: (May)Jul-Sep
Elevation:
1370 - 2105 meters
4495 - 6905 feet
General Habitat:
  • Meadows and seeps
  • Subalpine coniferous forest
  • Upper montane coniferous forest
General Micro Habitat:
Micro Habitat:
  • Pumice (often)
Notes:
Possibly threatened by fire suppression, recreational activities, vehicles, and logging.
Threats:
Taxonomy:
Other:
Total Occurrences: 17
Element Occurrence Ranks:
A B C D X U
5 7 1 0 0 4
Occurrence Status:
Historical >20 Years 10
Recent <=20 Years 7
Presence:
Presumed Extant 17
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA), Oregon (OR), Washington (WA)
California Counties and Islands: Name (Code)
Modoc (MOD), Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Ash Creek Butte (4112241), Bonita Butte (4112166), Border Mtn. (4112144), Medicine Lake (4112155), Scott Mountain (4112236), Somes Bar (4112344), Ukonom Mtn. (4112354), West of Kephart (4112154)
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.

Map

Presumed Extant
Counties   Quads