Vascular Plants - Cyperaceae - Eleocharis:
Eleocharis palustris
Page Author: Don Knoke
common spikerush, creeping spikerush 
Blooms: May - August
Habit: herb
Duration: perennial
Origin: Native
Distribution: Widespread in temperate amd cold-temperate regions of the Northern hemisphere; common in the Pacific Northwest.
Habitat: Wet places from sea level to moderate elevations in the mountains; tolerant of alkali.
Species Description:

General: Herbaceous, rhizomatous perennial, the culms scattered or in clumps along the rhizome, slender to stout, 1-10 dm. tall.
Leaves: Herbaceous, rhizomatous perennial, the culms scattered or in clumps along the rhizome, slender to stout, 1-10 dm. tall.
Flowers: Spikelet terminal and solitary, 5-23 mm. long, lanceolate in outline, brown or chestnut-colored; scales of the spikelet spirally arranged 2-4.5 mm. long, with 1 or 2 empty scales at the base of the spikelet, the lower one encircling the culm; perianth bristles usually 4, retrorsely barbed; stamens 2; styles bifid, thickened at the base.
Fruits: Achenes lenticular, yellow to brown, 1.5-2.5 mm. long, including a tubercle 0.4-0.7 mm. long.
Accepted Name:
Eleocharis palustris (L.) Roem. & Schult.
Synonyms:
Eleocharis smallii L.
Scirpus palustris L.

Treated in Flora of the PNW as:
Eleocharis palustris
Additional Resources:

PNW Herbaria Specimens: View list of all Eleocharis palustris specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Eleocharis palustris specimens in the WTU Herbarium database.

Washington Flora Checklist: Eleocharis palustris treatment.

E-Flora BC: Eleocharis palustris atlas page.

CalPhotos: Eleocharis palustris images.

USDA Plants Database: Eleocharis palustris.
Additional photographs of Eleocharis palustris:
(click on a thumbnail to view larger photo)

Fred Weinmann, 1991

Fred Weinmann, 1991

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Bud Kovalchik

Bud Kovalchik

G. D. Carr, 2006

G. D. Carr, 2006

G. D. Carr, 2006

G. D. Carr, 2006

Craig Althen, 2010

Joe DiTomaso

Joe DiTomaso

Joe DiTomaso

Robert L. Carr, 2011

Robert L. Carr, 2011

Robert L. Carr, 2011

Robert L. Carr , 2014
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Washington Native Plant Society
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