Taxon Report
Erythronium oregonum Appleg.giant fawn lily |
 ©2021 Scot Loring |
Classification
|
Scientific Name: |
Erythronium oregonum Appleg. |
|
Common Name: |
giant fawn lily |
| Family: | Liliaceae |
| Element Code: | PMLIL0U0C0 |
| USDA Plants Symbol: | EROR4 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Mar-Jun(Jul) | Mar-Jun(Jul) |
| Elevation: | 100-1150 (330-3775) |
| General Habitats: | Cismontane woodland, Meadows and seeps |
| Microhabitat: | Openings, Rocky, Serpentine (sometimes) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G5 |
|
State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_UCSC |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 38 |
| Element Occurrence Ranks: | |
| Excellent (A) | 4 |
| Good (B) | 10 |
| Fair (C) | 4 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 20 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT), Humboldt (HUM), Siskiyou (SIS) | |
| Quads: Name (Quad Code) | |
| Blue Creek Mtn. (4112347), Blue Lake (4012388), Cecilville (4112322), Ettersburg (4012328), Fish Lake (4112336), Gasquet (4112378), Grouse Mtn. (4012376), Hiouchi (4112471), Hoopa (4112316), Hupa Mountain (4112317), Iaqua Buttes (4012368), Johnsons (4112337), Lord-ellis Summit (4012387), Myers Flat (4012337), Panther Creek (4112318), Scotia (4012441), Somes Bar (4112344), Taylor Peak (4012442), Tish Tang Point (4112315), Willow Creek (4012386), Yager Junction (4012357) | |
Threat List Data from the CNDDB
| Threat List Total: | 9 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 17 | 45 % | |
| Logging | 15 | 39% |
| Road/trail construction/maint. | 12 | 31% |
| Other | 6 | 15% |
| Foot traffic/trampling | 5 | 13% |
| Wood cutting or brush clearing | 4 | 10% |
| Erosion/runoff | 3 | 7% |
| Grazing | 1 | 2% |
| Over-collecting/poaching | 1 | 2% |
| Recreational use (non-ORV) | 1 | 2% |
Notes
| Need quad for TRI Co. Threatened by horticultural collecting, road maintenance, and logging. Possibly threatened by trampling. California populations are geographically separate; may be a white form of E. revolutum. Specimens with white anthers sometimes referred to as ssp. leucandrum. See Madrono 3: 99 (1935) for original description and Madrono 35(1): 32-38 (1988) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
Selected References
| CRPR List Addition on 2007-07-23 |
| 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 1 January 2025].