Taxon Report
Schoenoplectus subterminalis (Torr.) Sojákwater bulrush |
 Dean Wm. Taylor (1996) |
Taxon Summary
Schoenoplectus subterminalis, commonly known as water bulrush, is a perennial rhizomatous herb (aquatic) in the Cyperaceae that is found in California and elsewhere. It occurs within Bogs and fens, and Marshes and swamps (montane lake margins), growing at elevations from 750 to 2250 meters. Schoenoplectus subterminalis 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: |
Schoenoplectus subterminalis (Torr.) Soják |
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Common Name: |
water bulrush |
| Family: | Cyperaceae |
| Element Code: | PMCYP0Q1G0 |
| USDA Plants Symbol: | SCSU10 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb (aquatic) |
| Blooming Period: Jun-Aug(Sep) | Jun-Aug(Sep) |
| Elevation: | 750-2250 (2460-7380) |
| General Habitats: | Bogs and fens, Marshes and swamps |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.3 |
| Global Rank: | G5 |
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State Rank: |
S3 |
| 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: | 32 |
| Element Occurrence Ranks: | |
| Excellent (A) | 10 |
| Good (B) | 8 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 14 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Butte (BUT), Del Norte (DNT), El Dorado (ELD), Humboldt (HUM), Lassen (LAS), Nevada (NEV), Plumas (PLU), Shasta (SHA), Tehama (TEH), Trinity (TRI), Tuolumne (TUO) | |
| Quads: Name (Quad Code) | |
| Blue Canyon (3912036), Broken Rib Mtn. (4112386), Chicken Hawk Hill (4112214), Childs Meadows (4012134), Cisco Grove (3912035), Covington Mill (4012287), Dogwood Peak (3912171), Echo Lake (3812071), Fish Lake (4112336), Freel Peak (3811978), Gold Lake (3912066), Jonesville (4012114), Kibbie Lake (3811917), Lake Eleanor (3711987), Mt. Harkness (4012143), Mumbo Basin (4112225), Pinecrest (3811928), Reading Peak (4012144), Red Cinder (4012142), Tangle Blue Lake (4112226), Weitchpec (4112326), Whisky Bill Peak (4112215) | |
Threat List Data from the CNDDB
| Threat List Total: | 8 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 5 | 16 % | |
| Altered flood/tidal/hydrologic regime | 1 | 3% |
| Degraded water quality | 1 | 3% |
| Grazing | 1 | 3% |
| Logging | 1 | 3% |
| Other | 1 | 3% |
| Recreational use (non-ORV) | 1 | 3% |
| Surface water diversion | 1 | 3% |
| Vandalism/dumping/litter | 1 | 3% |
Selected References
| USFS Potential Species of Conservation Concern Profile |
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 March 2025].