Sparganium Linnaeus. Bur-reed.
A genus of about 14 species, wetland and aquatic herbs, primarily circumboreal in arctic and temperate regions, but also in the tropics of Asia, and temperate Australia. The infrageneric classification shown in the key follows Sulman et al. (2013).
Ref: Beal (1960); Cook & Nicholls (1986); Cook & Nicholls (1987); Crow & Hellquist (2000b); Ito et al. (2016); Kaul (2000) In Flora of North America Editorial Committee (2000); Kubitzki (1998b); Sulman et al. (2013); Thieret (1982). Show full citations.
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© Gary P. Fleming | 
© Jens-Christian Svenning, some rights reserved (CC BY), uploaded by Jens-Christian Svenning | Sparganium angustifolium source | Original Image ⭷
© Bruce A. Sorrie | 
© Erik Danielson | 
© Sarah Johnson, some rights reserved (CC BY), uploaded by Sarah Johnson | Sparganium natans source | Original Image ⭷