Preferred term

macrophytobenthos

Is replaced by

Includes macroscopic, multicellular algae, and diatoms macrocolonies that lives on the bottom of seabed and freshwaters. Marine benthic macrophytes (macrophytobenthos) are mentioned in the WFDas a \\"quality element\\" for the classification of marine coastal areas. They include two fundamentally different groups of plants: the seaweeds (macroscopic algae) and the sea grasses (vascular plants).

http://vocabs.lter-europe.net/EnvThes/EnvEu_41