macrophyte
noun
mac·ro·phyte ˈma-krə-ˌfīt 
: a member of the macroscopic plant life especially of a body of water
macrophytic
ˌma-krə-ˈfi-tik
adjective 
Example Sentences
Recent Examples on the Web Further, 25 lakes were in a very bad state, entirely covered with macrophytes (thus affecting the diversity of the lake) or dumped with solid or liquid waste and with little or no water. 
Bahar Dutt, Quartz India, 22 Oct. 2019
Bahar Dutt, Quartz India, 22 Oct. 2019 Word History
Etymology
borrowed from German Makrophyt, from makro- macro- + -phyt -phyte
First Known Use
1903, in the meaning defined above