V.'ll.n Kl.o\\l-ks 01 M \\ YORK 



15 



Peltate; a rounded leaf blade with the jH-tiole attached at or near the 

 middle of the lower surface (figure 31). 



Perfoliate ; when the bases of leaf blades meet and join around the stem 

 of the plant (figure 26). 



Terms applied to the marginal segmentation of leaf blades: 



Sinuate; when the marginal lolx-s of the leaf blade present a wavy 

 outline (figure 33). 



34 



36 



Pinnately lobed ; when the tissue between the veinlets is cut out nearly 

 to the midrib of the leaf and the divisions are arranged like the pinnae of 

 a feather (figure 34). 



Palmate ; when the blade is deeply divided nearly or quite to a common 

 base (figure 38). 



