PLATE IV. 



STEMS, 



Fig- 



ill. Scaly culm^ (fquamofus culmus ] 

 312. Creeping 5^^;«, (repens cauUs) 



113. Scape, {fcapus) 



114. Jointed <:«/;7Z, {artkulatus culmus) 



115. Twining y?^w, (voluUUs caulis) 



116. T^NO'{or:YdJiemy (dichotomus caulis) 



117. Crofs-arm'dT?^^, {brachiatus caulis) 



