Poaceae

Pooideae
Aveneae
Agrostis
Aira
Alopecurus
Anthoxanthum
Avena
Cinna
Holcus
Koeleria
Limnodea
Phalaris
Phleum
Polypogon
Rostraria
Sphenopholis
Bromeae
Hainardieae
Meliceae
Poeae
Stipeae
Triticeae
Chloridoideae

Panicoideae

Arundinoideae

Bambusoideae

Home

Inflorescences

Dissections:
Agrostis stolonifera

Line drawings

AGROSTIS L. Bentgrass
Plants hermaphroditic, caespitose or rhizomatous or stoloniferous, annual or perennial. Culms erect or ascending or decumbent, nodes glabrous; internodes hollow, terete. Leaves basal, not distinctly distichous; sheaths terete, margins open; auricles absent; ligules membranous; blades flat or folded or involute, lax. Panicles open or narrow or contracted, primary branches spreading or ascending or appressed. Spikelets solitary, laterally compressed, awnless or awned, pedicellate; florets 1, reduced floret absent, callus glabrous or hairy; rachilla extended beyond floret or not extended above floret; glumes 1-veined, longer than floret, nearly equal, glabrous, awnless; lemmas 3-5-veined, membranous, glabrous or hairy, apex entire; awnless or awned, awn dorsal; paleas usually present or absent, veinless or 2-veined, awnless, glabrous. Stamens 3; anthers yellow. Caryopses dorsiventrally compressed. Base chromosome number x=7.

Nearly 225 species generally from temperate and subartic habitats. The species occupy shaded and open habitats and are commonly adventive. Several introduced taxa are important for livestock forage. Some of the bentgrasses are used in lawns and on golf courses.