CNPS

CNPS Rare Plant Inventory

Species Details

Erythronium helenae

St. Helena fawn lily

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  Classification

Scientific Name:
Erythronium helenae Appleg.
Common Name:
St. Helena fawn lily
Family: Liliaceae
Element Code: PMLIL0U060
USDA Plants Symbol: ERHE6
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 4.2
Fed List: None
State List: None
Global Rank: G3
State Rank:
 S3
Other Status:
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-12-09

  Ecology and Life History

Lifeform: perennial bulbiferous herb
Blooming Period: Mar-May
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Elevation:
350 - 1220 meters
1150 - 4005 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
  • Lower montane coniferous forest
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
  • Serpentine (sometimes)
  • Volcanic (sometimes)

  Notes

Notes:
Threatened by horticultural collecting, road construction, and geothermal development. See Contributions from the Dudley Herbarium 1:188 (1933) for original description, and Madroño 3(2):109 (1935) for taxonomic treatment.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 0
Total EOs % of EOs
EOs with Threat Listed: 0 0 %
THREAT LIST:

  Occurrence Data from the CNDDB

Total Occurrences: 0
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 0
Presence:
Presumed Extant 0
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Lake (LAK), Napa (NAP), Sonoma (SON)
Quads: Name (Quad Code)
Aetna Springs (3812264), Calistoga (3812255), Clearlake Oaks (3912216), Cloverdale (3812371), Detert Reservoir (3812265), Jericho Valley (3812274), Jimtown (3812267), Middletown (3812275), Mount St. Helena (3812266), Napa (3812233), St. Helena (3812254), The Geysers (3812277), Whispering Pines (3812276)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 18 April 2024].