Myriophyllum L.
Engl.: watermilfoil.

Myriophyllum alterniflorum

Myriophyllum alterniflorum DC.
Engl.: alternateflower watermilfoil, aternate-flowered water milfoil, slender water-milfoil.

Myriophyllum spicatum

Myriophyllum spicatum L.
Engl.: Eurasian watermilfoil, spike watermilfoil, spiked water milfoil.

Myriophyllum verticillatum

Myriophyllum verticillatum L.
Engl.: whorl-leaf watermilfoil, comb water-milfoil, green water-milfoil, whorled water milfoil.

I have no articles for this botanical term, but there might be some for the next level down (if found).