Myriophyllum L. >
Aquatic plants or growing on mud. Petals absent in female flowers Myriophyllum
At least submerged leaves whorled or opposite
At least submerged leaves in whorls of 3–8
Emerged leaves pinnately lobed, narrow-elliptic to ovate in outline, in whorls of 4–8
Emerged leaves all with fine linear lobes to the midrib, narrow-elliptic in outline, up to 25 mm long; submerged leaves more finely dissected. Bracteoles linear, divided. Mericarps not produced in Aust. Coast and Cumberland Plain. Still water. Introd. from S. America. Possum Tail or Parrot’s Feather Myriophyllum aquaticum