Sparganium glomeratum (Clustered Bur-reed) inflorescence

Sparganium glomeratum, the clustered bur-reed, is a species of bur-reed. It is a water plant native to high elevation lakes and marshes of Europe, Asia, and North America. North American populations were doubted as introduced due to its scarce and scattered populations, but a recent herbarium survey found more localities of the species in the central of Canada, concluding the species as circumpolar species.

Plants slender to robust, to 0.4(--0.6) m; at least some leaves and inflorescences.. more