Fig. 567: Myriophyllum spicatum: A, habit, x y^; B, whorl of leaves, x 2; C, part 

 of flower spike, with pistillate flowers below and staminate flowers above, x 4; D, 

 immature fruits, x 4; E, mature fruit, x 4. (From Reed, Selected Weeds of the United 

 States, Fig. 136). 



