Species Details

Erythronium howellii

Howell's fawn lily

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Classification

Scientific Name: Erythronium howellii Wats.
Common Name: Howell's fawn lily
Family:	Liliaceae
Element Code:	PMLIL0U080
USDA Plants Symbol:	ERHO10
Synonyms/Other Names:

Conservation Status

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

Ecology and Life History

Lifeform: perennial bulbiferous herb

Blooming Period: Apr-May

Elevation:
200 - 1145 meters
655 - 3755 feet

General Habitats:

Lower montane coniferous forest
North Coast coniferous forest

Microhabitat Details:

Microhabitat:

Serpentine (sometimes)

Notes

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 Madroño 3(2):89 (1935) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	2	18 %
Logging	1	9%
Mining	1	9%
Road/trail construction/maint.	1	9%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					11
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

Location

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.

Regional Map

Map

Presumed Extant

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Selected References

CNPS Status Review:	CRPR List Deletion on 2013-02-01
Other:	USFS Potential Species of Conservation Concern Profile