C/? OSS 



S £- C T / OA/ 



f^a/ndium 



uccd 



bast 



*/> 

 bast 

 LONGfTUDi NAL S £ C T / O /V 



133. Stem of 8quu«h: (rf) duct, (*rp) wood pH.-eiichvTna. (ir) trHcheid. (.*0 sieve-tube 

 {sp) sieve-plate. Uc) comDanion eeU, {hp) bast parenchyma. 



