
1) Freshwater plant
Found on
https://www.crosswordclues.com/clue/aponogeton

The Aponogetonaceae (Cape-pondweed family or Aponogeton family) are a family of flowering plants in the order Alismatales. The Aponogetonaceae is considered to be allied to the Potamogetonaceae - Najadaceae complex of families. In recent decades the family has had universal recognition by taxonomists. The APG system (1998) and APG II system (2003)...
Found on
http://en.wikipedia.org/wiki/Aponogeton

(Cape Pondweed, Lace-Leaf, Lattice-Leaf, Water Hawthorne) These hardy and tender aquatic plants are native to Asia, Africa and Australia. A. distachyus, the Water Hawthorne or Cape Pondweed, is the most popular variety. It forms oblong green and red leaves that float on the water's surface. In the spring and fall, inflorescences rise out of the wat...
Found on
http://www.encyclo.co.uk/local/10004
No exact match found.