This name is a synonym of Cymodocea serrulata (R.Br.) Asch. & Magnus.
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 309049) with original publication details: Cat. Veg. Mar. 90 1826.
This name was in version 1 of The Plant List, record kew-309049, and has not been changed.