Glyceria maxima (Hartm.) Holmb.
Family: Poaceae
English water grass,  more...
[Glyceria spectabilis Mert. & W.D.J.Koch,  more]
Glyceria maxima image
Emmet J. Judziewicz  
Etymology: Maxima (Latin) - greatest 
Plants: perennial, rhizomatous, semi-aquatic grass, with unbranched stem up to 2.5 m tall 
Leaves: blades flat or slightly folded, 2 cm wide x 22-29 cm long, shallowly grooved with prominent mid-ribs, apex acute, margins with stiff, short hairs; sheaths rough with reddish-brown band at the junction with the leaf 
Ligule: 5 mm wide, acute at apex
Inflorescence: panicle 15-30 cm long; spikelets 5-8 mm long; glumes keeled; lemmas 3 mm long, ovate, obtuse 
Habitat: meadows, streams, lakeshores
Glyceria maxima is an aggressive exotic weed.
Glyceria maxima image
Pat Trochlell  
Glyceria maxima image
Trochlell, Pat  
Glyceria maxima image
Trochlell, Pat  
Glyceria maxima image
Glyceria maxima image
Steve C. Garske  
Glyceria maxima image
Emmet J. Judziewicz  
Glyceria maxima image
Steve C. Garske  
Glyceria maxima image
Kurt Stüber  
Glyceria maxima image
Steve C. Garske  
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
Glyceria maxima image
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