Fig. 677: Mentha rotundifoUa: a, flower clusters at nodes, x 4; b, flower, x 8; 

 c, nutlet, X 28; d, flower, spread open, x 8; e, calyx, x 12; f, calyx spread open to 

 show the 4 mature nutlets, x 12; g, habit, x %. (From Mason, Fig. 303). 



