The Plant List — A working list for all plant species

⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-266184, and has not been changed.

H Sparganium williamsii Rydb. is a synonym of Sparganium hyperboreum Laest. ex Beurl.

This name is a synonym of Sparganium hyperboreum Laest. ex Beurl..

The record derives from WCSP which reports it as a synonym (record 266184) with original publication details: N. Amer. Fl. 17: 10 1909.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:241095-2.