Taxon Report
Epilobium oreganum GreeneOregon fireweed |
 © 2015 Steve Matson |
Taxon Summary
Epilobium oreganum, commonly known as Oregon fireweed, is a perennial herb in the Onagraceae that is found in California and elsewhere. It occurs within Bogs and fens, Lower montane coniferous forest, Meadows and seeps, and Upper montane coniferous forest, growing at elevations from 500 to 2240 meters. Epilobium oreganum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Epilobium oreganum Greene |
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Common Name: |
Oregon fireweed |
| Family: | Onagraceae |
| Element Code: | PDONA060P0 |
| USDA Plants Symbol: | EPOR |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Jun-Sep | Jun-Sep |
| Elevation: | 500-2240 (1640-7350) |
| General Habitats: | Bogs and fens, Lower montane coniferous forest, Meadows and seeps, Upper montane coniferous forest |
| Microhabitat: | Mesic |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 62 |
| Element Occurrence Ranks: | |
| Excellent (A) | 4 |
| Good (B) | 19 |
| Fair (C) | 2 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 37 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT), Glenn (GLE), Humboldt (HUM), Mendocino (MEN), Shasta (SHA), Siskiyou (SIS), Tehama (TEH), Trinity (TRI) | |
| Quads: Name (Quad Code) | |
| O'brien -rename- (4212316), Takilma (4212315), Board Camp Mtn. (4012366), Broken Rib Mtn. (4112386), Buck Rock (3912288), Buckhorn Bally (4112287), Caribou Lake (4112218), Chicken Hawk Hill (4112214), Chimney Rock (4112356), City of Mount Shasta (4112233), Covington Mill (4012287), Denny (4012384), Dunsmuir (4112223), Forest Glen (4012333), Grouse Mtn. (4012376), Hoosimbim Mtn. (4012258), Hyampom Mtn. (4012364), Maple Creek (4012377), Marble Mountain (4112352), Mendocino Pass (3912278), Mount Eddy (4112234), Naufus Creek (4012343), Plaskett Meadows (3912267), Polar Bear Mtn. (4112385), Pony Buck Peak (4012331), Rush Creek Lakes (4012278), Siligo Peak (4012288), Sims Mountain (4012365), Smoky Creek (4012332), Somes Bar (4112344), Tangle Blue Lake (4112226), Tish Tang Point (4112315), Trinity Center (4012286), Trinity Dam (4012277), Trinity Mtn. (4112314), Ukonom Mtn. (4112354), Whisky Bill Peak (4112215), Wildwood (4012341), Ycatapom Peak (4112217) | |
Threat List Data from the CNDDB
| Threat List Total: | 6 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 17 | 27 % | |
| Road/trail construction/maint. | 7 | 11% |
| Altered flood/tidal/hydrologic regime | 6 | 9% |
| Grazing | 6 | 9% |
| Foot traffic/trampling | 3 | 4% |
| Recreational use (non-ORV) | 2 | 3% |
| Other | 1 | 1% |
Notes
| Unable to confirm many historical occurrences on Shasta-Trinity NF; is it more common elsewhere? Threatened by logging and grazing. Known from fewer than 1000 plants at about twenty localities in OR, where candidate for state listing. See Pittonia 1:255 (1888) for original description. |
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Threats: |
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Taxonomy: |
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 26 February 2025].