glyceria maxima, commonly known as great manna grass, reed mannagrass, reed sweet-grass, and greater sweet-grass is rhizomatous

agriculture autumn backgrounds beauty blue botany cereal closeup color commonly day environment europe farm flora flower forest freshness genus glyceria grass grasses great greater green growth known leaf manna mannagrass maxima native natural nature outdoor outdoors paddy perennial plant reed rhizomatous rice rural scene season spring summer sweetgrass tree water yellow