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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  Sparganium glomeratum (Beurl. ex Laest.) Neuman image
Photographer: June M. Dobberpuhl           

Emmet J. Judziewicz

Scott A. Milburn

Josh Sulman

Josh Sulman
Family Sparganiaceae
Sparganium glomeratum (Beurl. ex Laest.) Neuman
clustered bur-reed, northern bur-reed
Sparganium: ancient name, probably sparganon for "a band," referring to ribbon-like leaves
glomeratum: clustered
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Threatened
Plant: erect, perennial, 1'- 2 1/2' tall, floating aquatic with stout stems
Flower: female flower green to white, 3-parted; inflorescence round heads, male heads (1 or 2) not separated from the female heads
Fruit:shiny, beaked nutlets in bur-like heads
Leaf:flat, not stiff
Habitat: sun; wet; bogs, shallow ruts; often in cold, mucky alder thickets near Lake Superior

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

Flora of North America (off site)
Sparganium erectum L. var. glomeratum Beurl. ex Laest.

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