Species Details

Rhynchospora alba

white beaked-rush

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Classification

Scientific Name: Rhynchospora alba (L.) Vahl
Common Name: white beaked-rush
Family:	Cyperaceae
Element Code:	PMCYP0N010
USDA Plants Symbol:	RHAL3
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S2
Other Status:	IUCN_LC
CRPR Changes: changed from 2.2 to 2B.2 on 2013-06-12
Add Date:	1974-01-01
Date Edited:	2021-07-14

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Jun-Aug

Elevation:
60 - 2040 meters
195 - 6695 feet

General Habitats:

Bogs and fens
Meadows and seeps
Marshes and swamps (freshwater)

Microhabitat Details:

Microhabitat:

Notes

Notes: Does plant occur in DNT, INY, or MPA counties? Threatened by grazing, trampling, and hydrological alterations. Endangered in ID, and on review list in OR.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	6	35 %
Foot traffic/trampling	2	11%
Altered flood/tidal/hydrologic regime	2	11%
Biocides	1	5%
Grazing	1	5%
Non-native plant impacts	1	5%
ORV activity	1	5%
Other	1	5%
Vandalism/dumping/litter	1	5%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					17
A	B	C	D	X	U
5	3	0	0	0	9

Occurrence Status:
Historical >20 Years	6
Recent <=20 Years	11

Presence:
Presumed Extant	17
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Alabama (AL), Alaska (AK), California (CA), Connecticut (CT), Delaware (DE), District of Columbia (DC), Georgia (GA), Idaho (ID), Illinois (IL), Indiana (IN), Maine (ME), Maryland (MD), Massachusetts (MA), Michigan (MI), Minnesota (MN), New Hampshire (NH), New Jersey (NJ), New York (NY), North Carolina (NC), Ohio (OH), Oregon (OR), Pennsylvania (PA), Rhode Island (RI), South Carolina (SC), Tennessee (TN), Vermont (VT), Virginia (VA), Washington (WA), West Virginia (WV), Wisconsin (WI)

California Counties and Islands: Name (Code)
Del Norte (DNT), Mariposa (MPA)?, Mendocino (MEN), Nevada (NEV)?, Plumas (PLU), Sonoma (SON), Tehama (TEH), Trinity (TRI), Tuolumne (TUO)

Quads: Name (Quad Code)
Childs Meadows (4012134), Cisco Grove (3912035), Covington Mill (4012287), Crescent Mills (4012018), El Capitan (3711966), Fort Bragg (3912347), Gasquet (4112378), Graniteville (3912046), Half Dome (3711965), Inglenook (3912357), Mathison Peak (3912336), Mt. Harkness (4012143), Pinecrest (3811928), Reading Peak (4012144), Sebastopol (3812247), Smoky Creek (4012332), Tamarack Flat (3711976), Yosemite Falls (3711975)

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

Other:

USFS Potential Species of Conservation Concern Profile