⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-26603620, and has not been changed.

Isoetes underwoodii L.F. Hend. is a synonym of Isoetes howellii Engelm.

This name is a synonym of Isoetes howellii Engelm..

The record derives from Tropicos which reports it as a synonym (record 26603620) with original publication details: Bot. Gaz. 23: 124 124 1897.

Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:130617-2.