KINDS AND FORMS OF LEAVES. 



SI 



figures. So those of the upper row ai*o called })in)iafe/[/ It/hod, ('fi\ff, parted, or 

 divided, as the case may be, aiul those of tlie lower row /xdiiiati'li/ lohcd, rbft^ 

 kc. The number of the lobes or pieces may also be exj)ressed in the same 

 phrase. Thus, llepatica has a pnhnnti'hj Ihreedohcd leaf (Fig. 121); the lied 

 Maple a ixdinatel ij jire-deft leaf (Fig. 84), and so on. 



141. In this way almost everything about the shape and veining of a leaf 

 may be told in very few words. How useful this is, will be seen when we 

 come to study plants to find out their names ])y the descriptions. 



142. All these terms apply as well to the lobes or parts of a loaf, when they 

 are themselves toothed, or lolu'd, or cleft, he. And they also apply to the parts 

 of the flower, and to any flat body like a leaf. So that tlie language of Botany, 

 which the stiident has to learn, does not require so very many technical words 

 as is commonly su}»posed. 



143. Compound Leaves (121) are tho.se which have the l^ide cut up into two or 

 more separate smaller blades. The separate blades or pi(!ces of a compound leaf 

 are called Lmtf'f-^. The leaflets are geueniWy juinted with the main footstalk, just 

 iis that is jointed 



with tlie stem, and la no wj 



when the leaf dies 

 the leaflets fall off 

 separatelv. 



144. There are 

 two kinds of com- 

 pound leaves, the 

 pinnate and the 

 jjalniate. 



145. Pinnate 

 leaves have their 

 leaflets arranged 

 along the sides of 

 the main footstalk, 

 as in Fig. 128, 129, 130. 



146. Palmate (also called Diijitatc) leaves bear their leaflets all at the very 

 end of the footstalk, as in Fig. 131. 



147. There are several varieties of pinnate leaves. The principal sorts 

 are : - 



OiUl-pinnato. 



I'iiiiKito with a liMiiliil. 



Abruptly i)iiinate. 



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