Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Small Floating Manna Grass
Glyceria borealis (Nash) Batch.
- Family: Grass (Gramineae)
- Flowering: June-August
- Field Marks: This grass has linear spikelets up to 3/4 inch long, with 8-12 flowers. The lemmas do not have hairs.
- Habitat: In shallow water of ponds and lakes and in wet meadows in the mountains.
- Habit: Perennial grass with rhizomes.
- Stems: Eventually upright, unbranched, hollow, up to 4 1/2 feet tall, without hairs.
- Leaves: Elongated, flat or folded, 1/4-1/3 inch wide, smooth or rough to the touch; ligules up to 1/2 inch long.
- Flowers: Borne in spikelets, with several spikelets in narrow panicles up to 1 1/2 feet long; spikelets 8- to 12-flowered, 1/2-3/4 inch long; glumes lanceolate, smooth; lemmas without hairs, 7-nerved.
- Sepals: 0.
- Petals: 0.
- Stamens: 3.
- Pistils: Ovary superior, smooth.
- Grains: Ellipsoid, smooth.
- Notes: The grains are eaten by waterfowl.
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