Fig. 674: Lycopus americanus: a, calyx containing mature nutlets, x 12; b, flower, 

 X 12: c, nutlet, adaxial view, x 20: d, nutlet, abaxial view, x 20; e, corolla, showing 

 rudimentary and fertile stamens and the pubescent tube, x 12; f, stem (cross section), 

 X 12: g, corolla, spread open to show rudimentary stamens and the pubescence in the 

 tube, X 12: h, habit, tip of the flowering plant, x --,: i, habit, base of plant, showing 

 stout rhizome, x %; j, flower clusters in the leaf axils, x iy2. (From Mason, Fig. 300). 



