52 



ZESSOJfS WITH PLANTS 



gradations from the one to the other. There is 

 another method of determining if this conclusion is 

 sound. We have already found that leaves bear 



definite relations to 

 buds, and, there- 

 fore, to the shoots 

 (whether of leaves 

 or of flowers) which 

 spring from the 

 buds. Fig. 52 is the 

 well known terminal 

 bud of the rhodo- 

 dendron. If the 

 pupil has the oppor- 

 tunity, he should ex- 

 amine the flower 

 cluster of this plant 

 or of one of the 

 large-bud azaleas. 

 He will find a flower * 

 springing from the 

 axil of each bud- 

 scale. He will read- 

 ily guess the significance of this arrangement. 

 There are two direct methods of determining the 

 morphology of any part, — by the evidences of its 

 form, and by its position with reference to 

 other parts; and to these may be added a third 



Fig. 51. 

 Opening shoot of black currant. 



