Robert W. Freckmann Herbarium


  Alisma subcordatum Raf. image
Photographer: Carol Watkins           

Carol Watkins

Gary Fewless

Josh Sulman

from USDA Plants Website
Family Alismataceae
Alisma subcordatum Raf.
American water-plantain, common water-plantain, southern water-plantain
Alisma: Greek name for a water plant
subcordatum: sub for "below, almost, less so than a similar plant;" cor for "heart;" atus for likeness; hence "almost heart-shaped"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect or floating, perennial, semi-aquatic to aquatic, 4"-40" tall
Flower: white to pink, 3-parted, 1/8" wide, petals only slightly longer than the sepals; inflorescence taller than the leaves and with 4 or more whorls of flowers per stalk; blooms May-Sept.
Fruit:dense ring of dry seeds; seed with 1 groove on the back
Leaf:in basal rosette, with parallel veins, ovate to elliptical, long-stalked, smooth and firm, aquatic or terrestrial
Habitat: shallow water; in muddy soil
Notes: very similar to Alisma triviale whose flower is to 1/3" wide
(Glossary)

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

Flora of North America (off site)
Synonyms 
Alisma parviflorum Pursh
Alisma plantago-aquatica L. subsp. subcordatum (Raf.) Hultén
Alisma plantago-aquatica L. var. parviflorum (Pursh) Torr.

         
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