Species Details

Silene nelsonii

Nelson's stringflower

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Classification

Scientific Name: Silene nelsonii M.R.Mesler, M.S.Mayer, & S.K.Carothers
Common Name: Nelson's stringflower
Family:	Caryophyllaceae
Element Code:	PDCAR0U2J0
USDA Plants Symbol:
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:
CRPR Changes: added to 4.3 on 2021-06-24
Add Date:	2021-06-24
Date Edited:	2022-04-05

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Apr-Jun

Elevation:
290 - 1430 meters
950 - 4690 feet

General Habitats:

Cismontane woodland
Lower montane coniferous forest

Microhabitat Details: Ephemeral drainages, grassy areas

Microhabitat:

Openings
Roadsides
Rocky

Notes

Notes:
Threats: Potentially threatened by road construction and maintenance, trampling, forestry practices, and severe wildfires.
Taxonomy: Similar to S. bolanderi, S. hookeri, and S. salmonacea; differentiated by its purely white flowers, dense pubescence at base of petals (often obscuring filaments), deeply lobed petals (inner lobe 8-32 mm long, outer lobe 6-26 mm long), and absent or inconspicuous appendages (generally less than 1 mm).

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	0 %

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					0
A	B	C	D	X	U
0	0	0	0	0	0

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	0

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Humboldt (HUM), Trinity (TRI)

Quads: Name (Quad Code)
Halfway Ridge (4012353), Hayfork Summit (4012351), Hyampom Mtn. (4012364), Naufus Creek (4012343), Salyer (4012385), Trinity Dam (4012277), Weaverville (4012268), Wildwood (4012341), Willow Creek (4012386)

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:	Proposed Addition to California Rare Plant Rank 4.3, G3 / S3 (2021)
Original Description:	Madroño 66(4): 176-193 (2019)
Other:	USFS Potential Species of Conservation Concern Profile