Fig. 570: Myriophxilum heterophyUum: a, end of branch, x 1; b, section of branch 

 under water, x 1 ; c, leaf, x 2; d, underwater leaf, x V/^, e and f, bracts, x IMi; g, 

 staminate flower, x 8; h, stamen, x 16; i, pistillate flower, x 12; j, fruits, x 3. (Courtesy 

 of R. K. Godfrey). 



