Species Details

Erythronium revolutum

coast fawn lily

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Classification

Scientific Name: Erythronium revolutum Sm.
Common Name: coast fawn lily
Family:	Liliaceae
Element Code:	PMLIL0U0F0
USDA Plants Symbol:	ERRE5
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G4G5
State Rank:	S3
Other Status:	SB_UCSC
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2024-03-06

Ecology and Life History

Lifeform: perennial bulbiferous herb

Blooming Period: Mar-Jul(Aug)

Elevation:
0 - 1600 meters
0 - 5250 feet

General Habitats:

Bogs and fens
Broadleafed upland forest
North Coast coniferous forest

Microhabitat Details:

Microhabitat:

Mesic
Streambanks

Notes

Notes: On watch list in OR, and state-listed as Sensitive in WA. See Madroño 3(2):93-99 (1935) for taxonomic treatment.
Threats: Threatened by logging, non-native plants, vehicles, and road maintenance. Possibly threatened by grazing.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	12
	Total EOs	% of EOs
EOs with Threat Listed:	148	86 %
Logging	141	81%
Road/trail construction/maint.	36	20%
Other	28	16%
Erosion/runoff	21	12%
Foot traffic/trampling	17	9%
Grazing	13	7%
Over-collecting/poaching	4	2%
Non-native plant impacts	3	1%
Mining	2	1%
Wood cutting or brush clearing	2	1%
Altered flood/tidal/hydrologic regime	1	0%
Recreational use (non-ORV)	1	0%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					172
A	B	C	D	X	U
24	80	41	8	0	19

Occurrence Status:
Historical >20 Years	23
Recent <=20 Years	149

Presence:
Presumed Extant	172
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR), Washington (WA)

California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Mendocino (MEN), Siskiyou (SIS), Trinity (TRI)

Quads: Name (Quad Code)
Ah Pah Ridge (4112348), Bailey Ridge (3912324), Bald Hills (4112328), Black Lassic (4012335), Blue Lake (4012388), Board Camp Mtn. (4012366), Bridgeville (4012347), Buckeye Mtn. (4012432), Bull Creek (4012431), Childs Hill (4112461), Cold Spring (3912315), Comptche (3912335), Dinsmore (4012345), Dubakella Mtn. (4012342), Ettersburg (4012328), Eureka (4012472), French Camp Ridge (4112327), Garberville (4012317), Gasquet (4112378), Grouse Mtn. (4012376), Hennessy Peak (4012375), Holter Ridge (4112338), Hupa Mountain (4112317), Iaqua Buttes (4012368), Johnsons (4112337), Klamath Glen (4112358), Korbel (4012378), Leggett (3912376), Lord-ellis Summit (4012387), Mad River Buttes (4012367), Maple Creek (4012377), Miranda (4012327), Myers Flat (4012337), Navarro (3912325), Owl Creek (4012358), Philo (3912314), Piercy (3912387), Salyer (4012385), Scotia (4012441), Sherwood Peak (3912355), Tan Oak Park (3912375), Taylor Peak (4012442), Weed (4112244), Weitchpec (4112326), Yager Junction (4012357)

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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CNPS Rare Plant Inventory