American Manna Grass
Glyceria grandis

Family: Grass (Poaceae)
AKA: Tall Manna Grass, Reed Mannagrass
Photo taken on: July 20, 2021
Location: Roaring Judy Fish Hatchery, GV, CO
Life Zones: Plains to foothills
Habitat: Shallow water, marshes, ponds

Grows 3 to 5 feet tall, light yellow-green, with flat, shiny leaves up to 18" long and ½" wide. Flower head is an open, branched cluster of spikelets, spreading and drooping, up to 16" long. The spikelets are flattened and about ⅛" long, florets are purplish.