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Photographer: from USDA Plants website
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Family Alismataceae
Alisma gramineum Lej.
grass-leaved water-plantain, narrow-leaved water-plantain
Alisma: Greek name for a water plant
gramineum: resembling grass, grassy
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| Status: | Native |
| Plant: | erect or floating, perennial, 4"-8" tall, emergent aquatic |
| Flower: | white to pink, 3-parted, 1/4" wide, petals obvious longer than the sepals; inflorescence of 4 or more whorls of flowers per stalk, with stalk taller than the leaves; blooms June-Aug. |
| Fruit: | dense ring of dry seeds, the ridge on the back of each seed grooved on either side |
| Leaf: | basal rosette, parallel veins; usually submerged, very thin and long; when emergent, on stout stalks, lance-shaped tapering to the base, 2 1/2-5 times long as wide |
| Habitat: | shallow water; in muddy soil |
| (Glossary) |
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