IUCN threat status:

Least Concern (LC)

Morphology

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Physical Description

Perennials, Aquatic, leaves emergent, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems erect or ascending, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes solid or spongy, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves pseudo-petiolate, petiole attached to sheath, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath and blade differentiated, Leaf blades twisted 180 degrees, inverted or curled, Leaf blades linear, Leaf blades lanceolate, Leaf blades ovate, Leaves with distinct crossveins, net-like transverse veins, Leaf blades 2 or more cm wide, Leaf blades mostly flat, Leaf blades mostly glabrous, Leaf blades more or less hairy, Leaf blades scabrous, roughened, or wrinkled, Ligule pr esent, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence an open panicle, openly paniculate, branches spreading, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence a panicle with narrowly racemose or spicate branches, Inflorescence branches more than 10 to numerous, Lower panicle branches whorled, Flowers unisexual, Plants monoecious, Spikelets pedicellate, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets paired at rachis nodes, Spikelets unisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets falling with parts of disarticulating rachis or pedicel, Inflorescence branches deciduous, falling intact, Spikelets, culm tips, branches and fruits with retrorse or uncinate hairs, Rachilla or pedicel glabrous, Monoecious - staminate and pistillate spikelets on same inflorescence, Glumes present, empty bracts, Glumes 2 clearly present, Glumes 3-4, Glu mes equal or subequal, Glumes shorter than adjacent lemma, Glumes 4-7 nerved, Lemma coriaceous, firmer or thicker in texture than the glumes, Lemma becoming indurate, enclosing palea and caryopsis, Lemma body or surface hairy, Lemma apex acute or acuminate, Lemma awnless, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma margins inrolled, tightly covering palea and caryopsis, Lemma straight, Lemma surface pilose, setose or bristly, Palea present, well developed, Palea membranous, hyaline, Palea about equal to lemma, Palea 2 nerved or 2 keeled, Stamens 6, Styles 1, Stigmas 3, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear, Caryopsis hairy at apex.

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Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

Dr. David Bogler

Source: USDA NRCS PLANTS Database

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