ON THE NATURE OF STIPULES 



207 



two outer ones, Land .L, soon branch, the larger division 

 passing into the leaf, while the smaller one, ir, supplies 

 the stipule. 



Fig. 319, representing a section of the stem of 

 Galium Aparine, shows a similar arrangement : the 



Fig. 317. Leaf of Pansy. Fig. 318 Tkansverse Section of Stem 

 , stipule. of Pansy at a Node, showing leaf 



sage of vascular bundles into pas- 

 and stipules (S). 



foliar bundles, L, L, soon after leaving the central pith 

 emit branches, s, s, which supply the stipules. 



Colomb defines stipules as appendages ' inserted 

 on the stalk at the base ot the leaf, the fibres of which 

 are exclusively derived from the corresponding foliar 

 bundles ' (' insere sur la tige, a la base de la feuille, et 

 dont tous les faisceaux proviennent exclusivement des 

 faisceaux foliaires correspondants '). 



