Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  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

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

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

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