STELAR THEORY IQt 
Fic. 96. 
A, transverse section of the stem of Egudésetum palustre (X26), and B, part of it 
X 160. C, transverse section of the rhizome of Lguis. sylvaticume (X26), and D, 
part of it x 160. £, transverse section of the rhizome of Zgwzs. ditorale (X26), and F, 
part of it x 160. cc=central cavity. v=vallecular canals. ¢=carinal canals. s=sheath 
of separate strands. a@s=outer, 7s=inner general endodermis: in A, C, and & the endo- 
dermis is indicated by a dotted line. (After Pfitzer.) From Rad. Kryft. Flora. 
