Ruppia polycarpa
Ruppia polycarpa is a submerged aquatic herb species in the genus Ruppia found in shallow brackish waters. It is a common submerged herb on Australasian coasts, including Australia and New Zealand.
It was first described in 1967 by R.Mason from a specimen found near the mouth of the Selwyn River, New Zealand, on the riverbed, on 27 February 1966 by J. Clarke.
It grows in "fresh to hypersaline coastal lakes, lagoons and estuaries".
