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Giant Bur-Reed is the largest and most common Sparganium sp. in Illinois. It is also easy to identify during the flowering period because each one of its pistillate flowers usually has 2 styles, rather than a single style. Its achenes are also distinctive because of their obconic-angular shape; other Sparganium spp. within the state have achenes with more ellipsoid shapes. This interesting plant should be used in wetland restorations more often.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© John Hilty

Source: Illinois Wildflowers

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