偃麦草

[ noun ]
European grass spreading rapidly by creeping rhizomes; naturalized in North America as a weed
<noun.plant>

Quack grass \Quack" grass`\ (Bot.)
See {Quitch grass}.

Quitch grass \Quitch" grass`\ (kw[i^]ch" gr[.a]s`). [Properly
quick grass, being probably so called from its vigorous
growth, or from its tenacity of life. See {Quick}, and cf.
{Couch grass}.] (Bot.)
A perennial grass ({Agropyrum repens}) having long running
rootstalks, by which it spreads rapidly and pertinaciously,
and so becomes a troublesome weed. Also called {couch grass},
{quack grass}, {quick grass}, {twitch grass}. See
Illustration in Appendix.