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Western Wetland Flora

Field Office Guide to Plant Species

Small Floating Manna Grass
Glyceria borealis (Nash) Batch.

JPG -- Species Photo JPG -- Distribution Map

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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Next Species -- Tall Manna Grass (Glyceria elata)

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URL: http://www.npwrc.usgs.gov/resource/plants/florawe/species/2/glycbore.htm
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Page Last Modified: Saturday, 02-Feb-2013 06:23:58 EST
Menlo Park, CA [caww54]