94 



I^jESSOjyS WITS PLANTS 



might represent foliage of an 

 indefinite form ; or, in other 

 words, that there is no abso- 

 lute and typical form of to- 

 mato leaves. Let the 

 pupil examine many- 

 tomato plants, and see 

 if this is true. 



103. The dahlia leaf 

 is peculiar (Fig. 91). 

 In .this specimen there 

 are five well-defined 

 leaflets, C, O, M, M, 

 A ; but one of these, 

 A, has given rise to 

 a strong segment or 

 division, and two 

 others have divisions 

 which are sufficiently 

 distinct to be called 

 leaflets. There are va- 

 rious grades of dividing or 

 compounding, and the leaf 

 may be said to be mixed. 

 It is incompletely bi- com- 

 pound. 



104. From observations on 

 leaves, we are soon impressed 



Fia. 91. 

 Leaf of dahlia. 



