Species Details

Erythronium citrinum var. roderickii

Scott Mountains fawn lily

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Photo of Erythronium citrinum var. roderickii

Classification

Scientific Name: Erythronium citrinum Wats. var. roderickii Shevock & Allen
Common Name: Scott Mountains fawn lily
Family:	Liliaceae
Element Code:	PMLIL0U042
USDA Plants Symbol:	ERCIR
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G4T3T4
State Rank:	S3S4
Other Status:	SB_UCSC
CRPR Changes: changed from 1B.3 to 4.3 on 2019-04-22
Add Date:	1994-01-01
Date Edited:	2021-12-09

Ecology and Life History

Lifeform: perennial bulbiferous herb

Blooming Period: Mar-Jun

Elevation:
550 - 1600 meters
1805 - 5250 feet

General Habitats:

Lower montane coniferous forest

Microhabitat Details:

Microhabitat:

Rocky (often)
Serpentine

Notes

Notes: Threatened by logging and vehicles. Possibly threatened by road construction and maintenance, and erosion. Not in TJM (1993). See Phytologia 71(2):101-103 (1991) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	12
	Total EOs	% of EOs
EOs with Threat Listed:	57	86 %
Logging	49	74%
Road/trail construction/maint.	19	28%
Erosion/runoff	6	9%
Biocides	3	4%
Foot traffic/trampling	2	3%
Grazing	1	1%
Vandalism/dumping/litter	1	1%
Wood cutting or brush clearing	1	1%
ORV activity	1	1%
Other	1	1%
Over-collecting/poaching	1	1%
Recreational use (non-ORV)	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					66
A	B	C	D	X	U
21	34	7	0	0	4

Occurrence Status:
Historical >20 Years	10
Recent <=20 Years	56

Presence:
Presumed Extant	66
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Shasta (SHA), Trinity (TRI)

Quads: Name (Quad Code)
Carrville (4112216), Chicken Hawk Hill (4112214), Covington Mill (4012287), Damnation Peak (4012285), Mumbo Basin (4112225), Tangle Blue Lake (4112226), Trinity Center (4012286), Whisky Bill Peak (4112215), Ycatapom Peak (4112217)

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 Change on 2019-04-22
Other:	USFS Potential Species of Conservation Concern Profile