Schoenoplectus pungens
common bulrush, common threesquare
Blooms: May - August
Habit: herb
Duration: perennial
Origin: Native
Distribution: Widespread in the United states and southern Canada, south to South America; found throughout the Pacific Northwest.
Habitat: Marshes and wet, low ground; tolerent of alkali.
Species Description:
General: Herbaceous perennials from rhizomes, the culms triangular, 1.5-10 dm. tall, somewhat scattered.
Leaves: Leaves several, all near the base, firm, usually elongate and channeled or folded and 1-2 mm. wide, or flat and 2-4 mm. wide.
Flowers: : Inflorescence a compact cluster of 1-6 sessile spikelets, 7-20 mm. long, subtended by a green bract 2-15 cm. long, like a continuation of the stem; flowers subtended by thin, translucent scales, yellowish- or reddish-brown to blackish-purple, the mid-rib exerted as a short awn; perianth bristles 4-6, unequal; stamens usually 3; style bifid or trifid.
Fruits: Achenes 2.2-3.3 mm. long, including the stylar beak, and 1.6-2.3 mm. wide.
Accepted Name:
Schoenoplectus pungens (Vahl.) Palla
Synonyms:
Scirpus pungens Vahl
Treated in Flora of the PNW as:
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Additional Resources:
PNW Herbaria Specimens: View list of
Schoenoplectus pungens specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of
Schoenoplectus pungens specimens in the WTU Herbarium database.
Washington Flora Checklist:
Schoenoplectus pungens treatment.
E-Flora BC:
Schoenoplectus pungens atlas page.
CalPhotos:
Schoenoplectus pungens images.
USDA Plants Database:
Schoenoplectus pungens.
Additional photographs of Schoenoplectus pungens:
(click on a thumbnail to view larger photo)

Fred Weinmann, 1999

Fred Weinmann, 1999

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Clayton J. Antieau, 1991