Taxon Report
Juncus supiniformis Engelm.hair-leaved rush |
 © 2013 Asa Spade |
Taxon Summary
Juncus supiniformis, commonly known as hair-leaved rush, is a perennial rhizomatous herb in the Juncaceae that is found in California and elsewhere. It occurs within Bogs and fens, and Marshes and swamps (freshwater), growing at elevations from 20 to 100 meters. Juncus supiniformis is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Juncus supiniformis Engelm. |
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Common Name: |
hair-leaved rush |
| Family: | Juncaceae |
| Element Code: | PMJUN012R0 |
| USDA Plants Symbol: | JUSU3 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Apr-May(Jun-Jul) | Apr-May(Jun-Jul) |
| Elevation: | 20-100 (65-330) |
| General Habitats: | Bogs and fens, Marshes and swamps |
| Microhabitat: | |
| Microhabitat Details: | near coast |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G5 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | IUCN_LC |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 6 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 1 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 3 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Mendocino (MEN) | |
| Quads: Name (Quad Code) | |
| Fort Bragg (3912347), Mendocino (3912337) | |
Threat List Data from the CNDDB
| Threat List Total: | 4 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 33 % | |
| Development | 1 | 16% |
| ORV activity | 1 | 16% |
| Other | 1 | 16% |
| Recreational use (non-ORV) | 1 | 16% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 November 2025].