⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-109341, with some changes.

Lemna umbonata A.Br. ex Hegelm. is a synonym of Spirodela polyrrhiza (L.) Schleid.

This name is a synonym of Spirodela polyrrhiza (L.) Schleid..

The record derives from WCSP which reports it as a synonym (record 109341) with original publication details: Lemnac. 156 1868.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:526226-1.