Schoenoplectus acutus (C.C.Gmel.) Palla  
Family: Cyperaceae
hard-stem bulrush
Schoenoplectus acutus image
Robert W. Freckmann  
Etymology: Schoenoplectus: Greek a 'rush leek' ' plecto for "plaited, twisted" schoenos for "rush or reed"
Plants: erect, perennial, 3-10' tall, semi-aquatic, emergent sedge; stems sturdy, firm, olive colored, cylindrical, filled with many small chambers; shallow rhizomes
Leaves: mostly sheaths or short blades at stem base
Flowers: inflorescence oval, stalked spikelets at side of floral bract at top of stem, spikelets in spirals are gray-brown with red flecks, fringed edge
Fruits: nutlets from under scales
Habitat: wet; marshes, in water usually less than 40" deep; in firm substrate soil
Conservation Status: Native
A Round-Stem Bulrush

- achenes 2-sided

- perianth bristles 6

- spikelets oblong to cylindrical, more than twice as long as broad

- stems firm

- awns of floral scales usually strongly contorted

- spikelets may be densely crowded

- pedicels sometimes puberulent and/or red-flecked like the scales

Schoenoplectus acutus image
Theodore S. Cochrane  
Schoenoplectus acutus image
Hugh H. Iltis  
Schoenoplectus acutus image
Hugh H. Iltis  
Schoenoplectus acutus image
Kurt Stüber