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Inflorescences

Dissections:
Mnesithea rugosa

MNESITHEA Kunth.
Plants hermaphroditic, caespitose or rhizomatous, perennial. Culms erect or ascending; internodes solid, glabrous, terete; nodes glabrous or hairy. Leaves basal and cauline, not distinctly distichous; sheaths keeled or terete, margins open; auricles absent; ligules a ciliate membrane or line of hairs; blades flat or folded (narrow), linear, lax or stiff, apex acuminate. Spicate racemes terminal and axillary (cylindrical) , sheaths subtending inflorescences not inflated or spathe-like; not aromatic; rachis glabrous; pedicels without longitudinal groove, glabrous, terete. Spikelets paired or ternate at each inflorescence node; dissimilar in size and shape, disarticulation below the glumes, dorsiventrally compressed; sessile (or short pediceled) spikelets fertile, pedicellate (or long pediceled) spikelets sterile or staminate. Pedicellate spikelets reduced (to vestigual), awnless. Sessile spikelets perfect; first glumes 2-keeled , gland-like depressions or pits not present; abaxial surface convex smooth or rugose, coriaceous or indurate, glabrous, awnless; second glumes length equal to first glumes; lower florets sterile or staminate or neuter, hyaline or chartaceous, apex entire, awnless (2-veined); paleas absent or present (greatly reduced); upper florets perfect; lemmas hyaline, entire (acuminate), awnless; paleas present, hyaline. Stamens 3; anthers purple. Caryopses linear, dorsiventrally compressed. Base chromosome number x=9.

A genus of about 25 species. The species are frequently important parts of wet grasslands.