Floating Pond Plant That Creates "carpets"

This page is the CodyCross answer for the clue below from Student Life , Group 933, Puzzle 5 (World History).

Question is: Floating Pond Plant That Creates "carpets"

and the answer is: DUCKWEED

Word Meaning:

DUCKWEED — Any of several reduced floating aquatic plants in the subfamily Lemnoideae of the family Araceae.

Definitions from Wiktionary.