Poaceae

Pooideae

Chloridoideae

Panicoideae
Andropogoneae
Andropogon
Arthraxon
Bothriochloa
Chrysopogon
Dichanthium
Elionurus
Eremochloa
Hemarthria
Heteropogon
Imperata
Microstegium
Mnesithea
Rottboellia
Saccharum
Schizachyrium
Sorghastrum
Sorghum
Themeda
Trachypogon
Tripsacum
Zea
Paniceae

Arundinoideae

Bambusoideae

Home

Inflorescences

Dissections:
Dichanthium aristatum

DICHANTHIUM Willem. Bluestem
Plant hermaphroditic, caespitose or rhizomatous or stoloniferous, perennial. Culms erect or ascending or decumbent; internodes solid, glabrous, terete; nodes glabrous or bearded (some glabrate with age). Leaves basal and cauline; not distinctly distichous; sheaths terete, margins open; auricles absent; ligules membranous or a ciliate membrane; blades flat, linear, lax, apex acuminate. Panicles of a few to several racemose branches, open, terminal, sheaths subtending the inflorescence not inflated and spathe-like; primary branches unbranched, digitate or subdigitate (rarely paired), spreading; aromatic or not aromatic; branches glabrous or hairy; pedicels without a longitudinal groove, hairy or glabrous, terete or flattened. Spikelets paired (ternate at branch apex) at each inflorescence node, similar in size and shape, disarticulation below the glumes, dorsiventrally compressed, sessile spikelets fertile, pedicellate, spikelets sterile. Pedicellate spikelets well developed, staminate or sterile, awnless. Sessile spikelets perfect; first glumes 2-keeled, gland-like depressions or pits not present, abaxial surface flat to convex, smooth, chartaceous, glabrous or hairy, awnless; second glumes length equal to first glumes; lower florets staminate or neuter; lemmas hyaline; apex, entire, awnless; paleas absent; upper florets perfect, lemmas hyaline and producing an apical awn; paleas present or absent, hyaline. Stamens 1 or 2 or 3; anthers olive or yellow. Caryopses broadly elliptical, dorsiventrally compressed. Base chromosome number x=10.

A genus of about 16 species. A small genus of pasture or range plants from Africa, Asia, and Australia. Some of the taxa are weedy (D. annulatum) in open habitats.