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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  No photograph available.
Family Lythraceae
Decodon verticillatus (L.) Elliott var. laevigatus Torr. & A.Gray
swamp loosestrife, water-willow, whorled loosestrife
Decodon: Greek deca for "ten" and odous for "tooth"
verticillatus: whorled
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: arching perennial, 1'-9' tall, semi-aquatic, emergent forb, often forms floating mats in soft sediment areas; stems woody at the base and angled, arching over and re-rooting in the water
Flower: pink, 5-parted, 1/3"-1/2" long, petals obvious, narrowing towards the base; inflorescence a dense cluster (cyme) of stalked flowers from the upper leaf axils; blooms Aug.-Sept.
Fruit:rounded capsule with many seeds
Leaf:short-stalked, lance-shaped, in whorls of 3 or 4 or in opposite pairs, leaves and stalks hairless
Habitat: wet; shallows, swamps, still water; in mucky, peaty soil

More Information Natural Communities Herbarium Specimens
All Decodon list Google- Images or Text
There are no synonyms for this taxon.

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