Taxon Report
Carex idahoa L.H. BaileyIdaho sedge |
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Taxon Summary
Carex idahoa, commonly known as Idaho sedge, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Meadows and seeps, and Subalpine coniferous forest, growing at elevations from 2850 to 3200 meters. Carex idahoa is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.Classification
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Scientific Name: |
Carex idahoa L.H. Bailey |
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Common Name: |
Idaho sedge |
| Family: | Cyperaceae |
| Element Code: | PMCYP036E0 |
| USDA Plants Symbol: | CAID |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Jul | Jul |
| Elevation: | 2850-3200 (9350-10500) |
| General Habitats: | Meadows and seeps, Subalpine coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.3 |
| Global Rank: | G3 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 2 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 1 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Mono (MNO) | |
| Quads: Name (Quad Code) | |
| Mt. Barcroft (3711852), Station Peak (3711851) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | % | |
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Notes
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Known in CA from only two occurrences near Station Pk. and Poison Creek in the White Mtns. Previously known in CA as C. parryana |
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Threats: |
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Taxonomy: |
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Previously known in CA as C. parryana |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 13 November 2025].