ZIZANIOPSIS Doell & Aschers.
Plants monoecious, caespitose or rhizomatous, perennial. Culms erect, glabrous; internodes hollow, terete. Leaves basal and cauline, not distinctly distichous; sheaths terete, margins open; auricles absent; ligules membranous; blades flat (margins serrate), linear, stiff. Panicles open, lower branches in whorls or pairs; primary branches spreading and drooping. Spikelets unisexual; staminate spikelets below the pistillate spikelets on each of the branches. Staminate spikelets solitary, laterally compressed, disarticulation at spikelet base, mucronate to awnless, pedicellate, not pendulous; glumes absent (0), florets 1; lemmas 7-veined, membranous, glabrous, mucronate to awnless; paleas 2-veined, awnless, glabrous. Stamens 6; anthers yellow. Pistillate spikelets solitary, laterally compressed to terete, disarticulation at spikelet base; awned, pedicellate; glumes absent (0), florets 1; lemmas 5-7-veined, membranous, glabrous, awned (1), pedicellate; paleas 3-veined, awnless or mucronate, glabrous. Caryopses oval, terete. Base chromosome number x=6.
A small genus of about 5 species, these species are adapted to wetland habitats.