Schoenoplectus tabernaemontani
softstem bulrush, soft-stem bulrush, great bulrush
Blooms: June - August
Habit: herb
Duration: perennial
Origin: Native
Distribution: Widespread in temperate North America; common throughout the Pacific Northwest, but less so than S. acutus.
Habitat: Marshes and muddy shores of lakes and streams at lower elevations; tolerant of alkali.
Species Description:
General: Stout, herbaceous perennials from rhizomes, the culms 1-2.5 m. tall, soft, terete.
Leaves: Leaves few, toward the base of the culm, with well-developed sheath and short blade.
Flowers: Inflorescence umbel-like, open, with spikelets in small, sessile clusters or singly on the lax branches of the inflorescence; spikelets shiny, reddish-brown, 7-10 mm. long; principle involucral bract solitary, 2-8 cm. long, erect, like an extension of the culm, green; lesser bracts small, chaffy and brownish; scales subtending the flowers scarious, 2.5-3 mm. long, with linear, reddish-brown marks on a brown background, not wholly concealing the achenes; perianth of 2-6 fragile, barbellate bristles; stamens usually 3; style bifid or trifid.
Fruits: Achenes 2.0-2.3 mm. long, plano-convex or unequally triangular.
Accepted Name:
Schoenoplectus tabernaemontani (C. C. Gmel.) Palla
Synonyms:
Schoenoplectus validus (Vahl) A. & D. Love
Scirpus lacustris L. ssp. creber (Fern.) T. Koyama
Scirpus lacustris L. ssp. glaucus (Reichenb.) Hartman
Scirpus lacustris L. ssp. tabernaemontani (K. C. Gmel.) Syme
Scirpus lacustris L. ssp. validus (Vahl) T. Koyama
Scirpus tabernaemontani C. C. Gmel.
Scirpus validus Vahl
Treated in Flora of the PNW as:
Scirpus validus
Additional Resources:
PNW Herbaria Specimens: View list of
Schoenoplectus tabernaemontani specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of
Schoenoplectus tabernaemontani specimens in the WTU Herbarium database.
Washington Flora Checklist:
Schoenoplectus tabernaemontani treatment.
E-Flora BC:
Schoenoplectus tabernaemontani atlas page.
CalPhotos:
Schoenoplectus tabernaemontani images.
USDA Plants Database:
Schoenoplectus tabernaemontani.
Additional photographs of Schoenoplectus tabernaemontani:
(click on a thumbnail to view larger photo)

Fred Weinmann, 1983

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik

Bud Kovalchik