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Photographer: Stephen L. Solheim
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Family Alismataceae
Alisma triviale Pursh
northern water-plantain
Alisma: Greek name for a water plant
triviale: common, ordinary
Hazardous 
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| Status: | Native |
| Plant: | erect or floating, perennial, semi-aquatic to aquatic, 4"-40" tall |
| Flower: | white, 3-parted, 1/3" wide, petals half again as long as the sepals; inflorescence taller than the leaves and with 4 or more whorls of flowers per stalk; blooms June-Sept. |
| Fruit: | dense ring of dry seeds; seed with 1 groove on the back |
| Leaf: | in basal rosette, with parallel veins, linear to lance-like to widely elliptical or oval, long-stalked, smooth and firm, aquatic or terrestrial |
| Habitat: | shallow water, ponds; in muddy soil |
| Notes: | very similar to Alisma subcordatum whose flower is 1/8" wide |
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