Fig. 267. — Pinus laricio: transverse section of a needle, showing the sheath inclosing 

 two bundles and the transfusion tissue. Outside the sheath is the tissue of crenately 

 lobed cells and numerous resin ducts. The heavily cutinized epidermal cells have thick 

 walls, and the hypodermal cells, one to three layers in thickness, are also thick walled. 

 The stomata are deeply sunken; X93. 



Fig. 268. — Finns strobus: transverse section of needle with a single bundle; X 155 



