266 



GYMNOSPERMS 



the same structure as in the rest of the conifers and will serve as a 

 type for the group (fig. 276). 



Fig. 271. — Agathis robusta: transverse section of leaf showing strong palisade with 

 looser tissue below, the bundle is nearly surrounded by very thick-walled cells. In a 

 transverse section, most of the stomata are cut longitudinally; X312. 



There is no dermatogen. A meristematic group of initials with 

 large nuclei (the nuclei of the group are indicated in fig. 276) gives rise 

 to plerome, pcriblcm, and root cap. It can be seen that rows of cells 



