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Genus Schoenoplectus Family Cyperaceae

Description: Tufted or rhizomatous perennials. Culms nodeless, terete to triquetrous, glabrous.

Leaves mostly reduced to a mucro on a sheath, occasionally longer blade present; ligule membranous. Inflorescence pseudolateral, branched or head-like or a single spikelet; lowest involucral bract culm-like, usually erect.

Spikelets mostly sessile, many-flowered. Hypogynous bristles 2–6, filiform and retrorsely scabrous, or flattened and irregularly plumose. Stamens 2 or 3. Style 2- or 3-fid.

Nuts lenticular or trigonous, smooth.


Habitat
Photo Karen L Wilson

Flower
Photo Karen L Wilson

Distribution and occurrence: World: c. 30 species, cosmopolitan. Australia: 4 species, all States.

Previously more broadly circumscribed to include the smaller perennials and annuals that are now placed in Schoenoplectiella.

Text by K. L. Wilson (1993); edited KL Wilson (Nov 2015)
Taxon concept:

Taxa not yet included in identification key
Schoenoplectus californicus

 Key to the species 
1Inflorescence compound, with the lowest involucral bract usually shorter than or equalling the inflorescence; culms terete; leaf blades absent or reduced2
Inflorescence simple, head-like; the lowest involucral bract much exceeding the inflorescence; culms triquetrous; leaf blades present, to 20 cm longSchoenoplectus pungens
2Hypogynous bristles 5 or 6, filiform, retrorsely scabrous; glumes distinctly ciliate; culms grey-greenSchoenoplectus validus
Hypogynous bristles usually 4 (3–5), flattened or folded longitudinally, antrorsely plumose; glumes glabrous or rarely sparsely minutely ciliate; culms yellow-green
                       Back to 1
Schoenoplectus subulatus

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