Species Details

Erythronium revolutum

coast fawn lily

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Photo of Erythronium revolutum
©2007 Steve Matson
Photo of Erythronium revolutum
©2007 Steve Matson
CA Rare Plant Rank: 2B.2
Fed List: None
State List: None
Global Rank: G4G5
State Rank:
S3
Other Status: SB_UCSC
CRPR Changes:
changed from 2.2 to 2B.2 on 2013-06-12
Add Date: 2001-01-01
Date Edited: 2024-03-06
Lifeform: perennial bulbiferous herb
Blooming Period: Mar-Jul(Aug)
JFMAMJJASOND
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:
On watch list in OR, and state-listed as Sensitive in WA. See MadroƱo 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 Total: 12
Total EOs % of EOs
EOs with Threat Listed: 148 86 %
THREAT LIST:
Logging 141 81%
Road/trail construction/maint. 36 20%
Other 28 16%
Erosion/runoff 21 12%
Foot traffic/trampling 17 9%
Total Occurrences: 172
Element Occurrence Ranks:
A B C D X U
24 80 41 8 0 19
Occurrence Status:
Historical >20 Years 17
Recent <=20 Years 155
Presence:
Presumed Extant 172
Possibly Extirpated 0
Presumed Extirpated 0
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.
Presumed Extant
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