Schoenoplectus tabernaemontani |
Schoenoplectus americanus |
|
---|---|---|
great bulrush, soft-stem bulrush |
Olney's three-square bulrush |
|
Habit | Stout, herbaceous perennials from rhizomes, the culms 1-2.5 m. tall, soft, terete. | Perennial herbs ranging from 0.4-2.5 m; rhizome long, 2-5 mm diameter; stems 3-10 mm diameter, sides 3, deep-concave, edges sharp, faces smooth. |
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. |
|
Schoenoplectus tabernaemontani |
Schoenoplectus americanus |
|
Flowering time | June-August | June-August |
Habitat | Marshes and muddy shores of lakes and streams at lower elevations; tolerant of alkali. | Marshes, shores, peatlands, tolerant of alkali. |
Distribution | Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast; also in Central and South America.
|
Occurring on both sides of the Cascades crest in Washington British Columbia to California, east to the Atlantic Coast.
|
Origin | Native | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Web links |
|
|