Fig. 25. Part of a Transverse Section of Stem of Sunflower, showing one of tlie 

 Vascular Bundles. A, hair ; B, epidermis ; C, collenchyma of cortex ; D, 

 resin duct in cortex ; E, parenchyma of cortex ; F, endodermis ; G, scleren- 

 chyma ; H, phloem ; J, cambium ; K, xylem ; L, intra-stelar parenchyma (note 

 the resin-ducts). 



94 



