ON STIPULES 



23 



Stipules present, however, a great variety of forms. 

 Those, for instance, of the Common Garden Pea 



I 



FIG. 26. STIPULES OF PEA BEFOKE THE UNFOLDING OF THE LEAF. 

 A, natural position ; B, one stipule turned back, showing the rest of the leaf. 



(Pisum sativum) (fig. 26) are 

 large, oblong-oval, mucronate, 

 unequal - sided, and unequally 

 toothed at one side. They cover 

 the rest of their own leaf in the 

 young stage and all the rest 

 of the bud. 



In the Pansy (fig. 27) they 

 are large, oblong, and pinnatifid, 

 with 3-6 linear lobes on the ex- 

 ternal side. 



In Hymenanthera (fig. 28), a 



FIG. 27. LEAF OF PANSY 



Three-fourths nat. size. 



8, S, stipules. 



