Taxon Details

Trichophorum pumilum

little bulrush

View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist

Taxon Summary:

Trichophorum pumilum, commonly known as little bulrush, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Bogs and fens, Marshes and swamps, and Riparian scrub, growing at elevations from 2860 to 3250 meters. Trichophorum pumilum is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Trichophorum pumilum (Vahl) Schinz & Thell.
Common Name: little bulrush
Family:	Cyperaceae
Element Code:	PMCYP0Q250
USDA Plants Symbol:	TRPU18
Synonyms/Other Names: Scirpus rollandii Fern. Scirpus pumilus Vahl
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S1
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2025-01-07

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Aug

Elevation:
2860 - 3250 meters
9385 - 10665 feet

General Habitats:

Bogs and fens
Marshes and swamps
Riparian scrub

Microhabitat Details: riverbanks

Microhabitat:

Carbonate
Streambanks

Notes

Notes: See Madroño 17(4):93-109 (1963) for first CA report and 41(2):148-149 (1994) for second CA report.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	2
	Total EOs	% of EOs
EOs with Threat Listed:	2	40 %
Erosion/runoff	1	20%
Grazing	1	20%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					5
A	B	C	D	X	U
0	3	0	0	0	2

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	3

Presence:
Presumed Extant	5
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Alaska (AK), California (CA), Colorado (CO), Idaho (ID), Montana (MT), Wyoming (WY)

California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)

Quads: Name (Quad Code)
Convict Lake (3711857), Mt. Barcroft (3711852), Mt. Thompson (3711825)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory