Taxon Details

Rhynchospora globularis

round-headed beaked-rush

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Taxon Summary:

Rhynchospora globularis, commonly known as round-headed beaked-rush, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Marshes and swamps, growing at elevations from 45 to 60 meters. Rhynchospora globularis is ranked 2B.1, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Rhynchospora globularis (Chapm.) Small
Common Name: round-headed beaked-rush
Family:	Cyperaceae
Element Code:	PMCYP0N0W0
USDA Plants Symbol:	RHGL2
Synonyms/Other Names: Rhynchospora globularis var. globularis
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.1
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S1
Other Status:
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-08-02

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Jul-Aug

Elevation:
45 - 60 meters
150 - 195 feet

General Habitats:

Marshes and swamps (freshwater)

Microhabitat Details:

Microhabitat:

Notes

Notes: Seriously threatened by marsh habitat loss and non-native plants.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	2	67 %
Development	1	33%
Non-native plant impacts	1	33%
Other	1	33%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
A	B	C	D	X	U
0	0	1	0	1	1

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	1

Presence:
Presumed Extant	2
Possibly Extirpated	1
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Alabama (AL), Arkansas (AR), California (CA), Delaware (DE), Florida (FL), Georgia (GA), Louisiana (LA), Maryland (MD), Mississippi (MS), North Carolina (NC), South Carolina (SC), Tennessee (TN), Texas (TX), Virginia (VA)

California Counties and Islands: Name (Code)
Sonoma (SON)

Quads: Name (Quad Code)
Sebastopol (3812247), Two Rock (3812237)

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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CNPS Rare Plant Inventory