Species Details

Erythronium howellii

Howell's fawn lily

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Photo of Erythronium howellii
© 2021 Scot Loring
Photo of Erythronium howellii
© 2003 Norman Jensen
Photo of Erythronium howellii
©2021 Scot Loring
Scientific Name:
Erythronium howellii Wats.
Common Name:
Howell's fawn lily
Family: Liliaceae
Element Code: PMLIL0U080
USDA Plants Symbol: ERHO10
Synonyms/Other Names:
CA Rare Plant Rank: 1B.3
Fed List: None
State List: None
Global Rank: G3G4
State Rank:
S2
Other Status:
CRPR Changes:
removed from 1B.3 on 2013-02-01
Add Date: 1974-01-01
Date Edited: 2021-12-09
Lifeform: perennial bulbiferous herb
Blooming Period: Apr-May
Elevation:
200 - 1145 meters
655 - 3755 feet
General Habitat:
  • Lower montane coniferous forest
  • North Coast coniferous forest
General Micro Habitat:
Micro Habitat:
  • Serpentinite (sometimes)
Notes:
Possibly threatened by logging and associated road use. Endangered in OR. A synonym of E. citrinum in TJM (1993) and TJM 2. See Proceedings of the American Academy of Arts and Sciences 22:480 (1887) for original description, and MadroƱo 3(2):89 (1935) for taxonomic treatment.
Threats:
Taxonomy:
Other:
Total Occurrences: 11
Element Occurrence Ranks:
A B C D X U
0 0 1 0 0 10
Occurrence Status:
Historical >20 Years 10
Recent <=20 Years 1
Presence:
Presumed Extant 11
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA), Oregon (OR)
California Counties and Islands: Name (Code)
Del Norte (DNT), Siskiyou (SIS)
Quads: Name (Quad Code)
Takilma (4212315), Broken Rib Mtn. (4112386), Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Hiouchi (4112471), Hurdygurdy Butte (4112377), Polar Bear Mtn. (4112385), Shelly Creek Ridge (4112387)
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.

Map

Presumed Extant
Counties   Quads