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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  Callitriche heterophylla Pursh image
Photographer: Louisiana State University           

from USDA Plants Website
Family Callitrichaceae
Callitriche heterophylla Pursh
large water-starwort
Callitriche: from the Greek calos, "beautiful," and trichos, "hair," because of the beautiful stems
heterophylla: Greek hetero for "varied" and phylla for "leaves"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Threatened
Plant: annual, submersed aquatic with tips of the shoots floating or forming mats in mud, less than 9" long; stems fine; roots shallow
Flower: 2-parted, minute, in the leaf axils
Fruit:nearly as long as wide capsule, round but sometimes slightly wider above the middle, with shallow grooves and no wingsfruit drawing
Leaf:opposite, denser toward the tip of the stem, ribbon-like, pale green, smooth edges; when on the water surface, they form a rosette of spatulate leaves up to 1/4" wide
Habitat: quiet water; in muddy, sandy soil
Notes: differing from C. plaustris mainly in the fruit shape and edges

More Information Natural Communities Herbarium Specimens
All Callitriche list Google- Images or Text
Callitriche anceps Fernald
Callitriche heterophylla Pursh subsp. heterophylla

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