Species Details

Rhynchospora capitellata

brownish beaked-rush

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Photo of Rhynchospora capitellata
©2004 Dean Wm. Taylor
Photo of Rhynchospora capitellata
©2004 Steve Matson
Photo of Rhynchospora capitellata
©2006 Dean Wm. Taylor, Ph.D 0000 0000 0806 0996
Scientific Name:
Rhynchospora capitellata (Michx.) Vahl
Common Name:
brownish beaked-rush
Family: Cyperaceae
Element Code: PMCYP0N080
USDA Plants Symbol: RHCA12
Synonyms/Other Names:
CA Rare Plant Rank: 2B.2
Fed List: None
State List: None
Global Rank: G5
State Rank:
Other Status: IUCN_LC
CRPR Changes:
changed from 2.2 to 2B.2 on 2013-06-12
Add Date: 1974-01-01
Date Edited: 2022-06-08
Lifeform: perennial herb
Blooming Period: Jul-Aug
45 - 2000 meters
150 - 6560 feet
General Habitats:
  • Lower montane coniferous forest
  • Meadows and seeps
  • Marshes and swamps
  • Upper montane coniferous forest
Microhabitat Details:
  • Mesic
Possibly threatened by grazing and development. See Rhodora 46:115-121 (1944) for taxonomic treatment.
Threat List Total: 8
Total EOs % of EOs
EOs with Threat Listed: 6 24 %
Foot traffic/trampling 3 12%
Other 2 8%
Surface water diversion 1 4%
Altered flood/tidal/hydrologic regime 1 4%
Development 1 4%
Total Occurrences: 25
Element Occurrence Ranks:
4 1 3 0 1 16
Occurrence Status:
Historical >20 Years 16
Recent <=20 Years 9
Presumed Extant 24
Possibly Extirpated 1
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
Alabama (AL), Arkansas (AR), California (CA), Connecticut (CT), Delaware (DE), District of Columbia (DC), Florida (FL), Georgia (GA), Illinois (IL), Indiana (IN), Kansas (KS), Kentucky (KY), Louisiana (LA), Maine (ME), Maryland (MD), Massachusetts (MA), Michigan (MI), Mississippi (MS), Missouri (MO), Nebraska (NE), New Hampshire (NH), New Jersey (NJ), New York (NY), North Carolina (NC), Ohio (OH), Oklahoma (OK), Oregon (OR), Pennsylvania (PA), Rhode Island (RI), South Carolina (SC), Tennessee (TN), Texas (TX), Vermont (VT), Virginia (VA), West Virginia (WV), Wisconsin (WI)
California Counties and Islands: Name (Code)
Butte (BUT), El Dorado (ELD), Mariposa (MPA), Nevada (NEV), Plumas (PLU), Sonoma (SON)(?), Tehama (TEH), Trinity (TRI), Tuolumne (TUO), Yuba (YUB)
Quads: Name (Quad Code)
Brush Creek (3912163), Cascade (3912162), Challenge (3912142), Chicago Park (3912028), Clipper Mills (3912152), Crescent Mills (4012018), Devil Peak (3812085), Duckwall Mtn. (3712081), Georgetown (3812087), Grass Valley (3912121), Jawbone Ridge (3712071), Kimshew Point (3912184), Meadow Valley (3912181), Nevada City (3912131), North Bloomfield (3912038), Paradise West (3912176), Pike (3912048), Pollock Pines (3812075), Pulga (3912174), Quincy (3912088), Sebastopol (3812247)(?), Shingletown (4012148), Trinity Center (4012286), Tunnel Hill (3812086)
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.
Presumed Extant
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