LEAVES. 



35 



Leaf-scales and flower-scales. a, a, leaf scales of the heart's 

 ease : b, the leaf? c, flower -scale of the lime tree j d, the leaf. 



In the carrot and hemlock there are flower-scales 

 both at the base of the large umbels and the small 

 umbels, sometimes termed the fence l . The fences 

 of flower scales in the daisy and dandelion are 

 placed circularly in a single or double row, imme- 



a 



Flower-scales a, fence of flower-scales in the daisy ; b, sheath- 

 ing flower-scale in cuckoo-pint. 



(1) In Latin, Involucrum. 

 D2 



