Myriophyllum L. >
Aquatic plants or growing on mud. Petals absent in female flowers Myriophyllum
All leaves alternate. Emergent leaves linear to lanceolate, sometimes pinnatisect, usually less than 10 mm long. Flowers solitary, ± sessile. Male petals cream, c. 2 mm long
Leaves pinnately divided into usually 5 linear segments. Mericarps sparsely papillose. Coast and adjacent plateaus, Cumberland Plain. Shallow water or on mud Myriophyllum gracilegracile