Aquatic plants (5,6)
'aquatic plants' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for algae that I've seen before include "Primitive organisms" , "Type of seaweed" , "Water plants with no true stems or leaves" , "Stemless water plants found in a gale" , "Water plants seen in a gale" .)
'aquatic plants' is the definition.
(water lily is a kind of aquatic plant)
This is the entire clue.
(Other definitions for water lilies that I've seen before include "Aquatic flowers - Monet's subject" , "Plants painted often by Monet" .)