Robert W. Freckmann Herbarium


  Alisma gramineum Lej. image
Photographer: from USDA Plants website           
Family Alismataceae
Alisma gramineum Lej.
grass-leaved water-plantain, narrow-leaved water-plantain
Alisma: Greek name for a water plant
gramineum: resembling grass, grassy
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
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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 sideseed drawing
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)

More Information Natural Communities Herbarium Specimens
All Alisma list Google- Images or Text

Flora of North America (off site)
Synonyms 
Alisma geyeri Torr.
Alisma gramineum Lej. var. angustissimum (DC.) Hendricks
Alisma gramineum Lej. var. geyeri (Torr.) Lam.
Alisma gramineum Lej. var. wahlenbergii auct. non (Holmb.) Raymond & Kucyn.
Alisma gramineum Lej. var. graminifolium (Wahlenb.) Hendricks

         
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