Ja({ u cctl spring et/ccti 



Jail iuc 



j.wi . "i*\ "* 



rind (or ccrtex) 

 LONC/TUD/NAL GfCTJOAf 



FIG. 81. Oak branch in cross, tangential, and longitudinal section : cork 

 (cfc), cork cambium (cc), parenchyma (cor. p.), stereome (str), bast (bp), 

 sieve-plate (sp), sieve-tube (sf), duct (d), tracheid (tr), wood paren- 

 chyma (wp), medullary ray (mr), and lenticel (/). [After Osterhout.] 



Y 



