

Fig. 30: Sparganium americanuin: a, habit, X I4; b, cross section of leaf, X 1; 

 c, section of staminate head, X 1|,1>; e, pistillate head, about X 1; f, fruits, one with 

 and one without perianth scales, X 3; g, mature fruit, X 3. (Courtesy of R. K. 

 Godfrey). 



