Taxon Report

Carex sheldonii Mkze.

Sheldon's sedge

Print Report

Classification


Scientific Name:	Carex sheldonii Mkze.
Common Name:	Sheldon's sedge
Family:	Cyperaceae
Element Code:	PMCYP03CE0
USDA Plants Symbol:	CASH
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: May-Aug	May-Aug
Elevation:	1200-2012 (3935-6600)
General Habitats:	Lower montane coniferous forest, Marshes and swamps, Riparian scrub
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G4
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	48
Element Occurrence Ranks:
Excellent (A)	3
Good (B)	10
Fair (C)	6
Poor (D)	1
None (X)	1
Unknown (U)	27

Location


California Endemic: False
California Counties and Islands: Name (Code)
Lassen (LAS), Modoc (MOD), Placer (PLA), Plumas (PLU)
Quads: Name (Quad Code)
Adin (4112028), Alturas (4112045), Antelope Lake (4012025), Babcock Peak (4012015), Big Swamp (4112121), Blairsden (3912075), Caribou (4012112), Cold Spring Mtn. (4112013), Crescent Mills (4012018), Crocker Mtn. (3912084), Donica Mtn. (4112132), Dutch Flat (3912027), Genesee Valley (4012016), Greenville (4012028), Grizzly Valley (3912085), Halls Canyon (4112131), Infernal Caverns (4112035), Janesville (4012035), Jess Valley (4112023), Johnsville (3912076), Kettle Rock (4012026), Lane Reservoir (4112017), Likely (4112025), Portola (3912074), Soup Creek (4112033), Susanville (4012046), Westwood East (4012038)

Threat List Data from the CNDDB


Threat List Total:	13
EOs with Threat Listed:	Total EOs	% of EOs
	35	73 %
Grazing	14	29%
Non-native plant impacts	12	25%
Road/trail construction/maint.	11	22%
Other	5	10%
ORV activity	3	6%
Altered flood/tidal/hydrologic regime	2	4%
Dam/Inundation	2	4%
Development	2	4%
Recreational use (non-ORV)	2	4%
Erosion/runoff	1	2%
Foot traffic/trampling	1	2%
Degraded water quality	1	2%
Logging	1	2%

Notes



Need quads for PLA Co. Threatened by grazing. Possibly threatened by road maintenance. On review list in ID.
Threats:

Taxonomy:

Selected References

Carex sheldonii account for potential Species of Conservation Concern evaluation (2022)

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].