myriophyllum verticillatum l.

after alternate and apex are autumn axils born bracts branched bright broadly corolla cylindrical developed female filaments flowering flowers fruit genus green grooves herbaceous heterozygous labyrinth lanceolate leaf leaves lobes lolium lower monoecious mud myriophyllum nodes outside ovate part perennial pinnately produced remnant rhizomes rooted sepals sessile shallow shoots shorter solitary spreading stem stronger styles submerged than thick verticillatum water wider winter yellowish yene yezhong