Taxon Details
Carex halliana
Oregon sedge
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©2010 Keir Morse |
©2019 Matt C. Berger |
Taxon Summary:
Carex halliana, commonly known as Oregon sedge, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Meadows and seeps, Subalpine coniferous forest, and Upper montane coniferous forest, growing at elevations from 1370 to 2105 meters. Carex halliana is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.|
Scientific Name: Carex halliana Bailey |
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Common Name: Oregon sedge |
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| Family: | Cyperaceae | |
| Element Code: | PMCYP035M0 | |
| USDA Plants Symbol: | CAHA2 | |
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 2B.3 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G4G5 |
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State Rank: |
S2 |
| Other Status: | |
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CRPR Changes: |
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| Add Date: | 1980-01-01 |
| Date Edited: | 2023-07-07 |
| Lifeform: perennial rhizomatous herb | ||||||||||||||
Blooming Period: (May)Jul-Sep
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Elevation:
1370 - 2105 meters 4495 - 6905 feet |
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General Habitats:
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| Microhabitat Details: Often pumice | ||||||||||||||
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Microhabitat:
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| Threat List Total: | 8 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 12 | 71 % |
| THREAT LIST: | ||
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| Other | 5 | 29% |
| Road/trail construction/maint. | 4 | 23% |
| Logging | 3 | 17% |
| ORV activity | 2 | 11% |
| Foot traffic/trampling | 1 | 5% |
| Improper burning regime | 1 | 5% |
| Wood cutting or brush clearing | 1 | 5% |
| Recreational use (non-ORV) | 1 | 5% |
| Total Occurrences: | 17 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 5 | 7 | 1 | 0 | 0 | 4 |
| Occurrence Status: | |||||
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| Historical >20 Years | 10 | ||||
| Recent <=20 Years | 7 | ||||
| Presence: | |||||
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| Presumed Extant | 17 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA), Oregon (OR), Washington (WA) |
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California Counties and Islands: Name (Code) Modoc (MOD), Siskiyou (SIS), Trinity (TRI) |
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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) |
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Notes:
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Presumed Extant
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