PLATE C L X XXI, 



Leaves of the Malta lemon, from the Etawah Jail Garden. 



a is a new fully-developed rain leaf, thin and transparent. Its petiole has no sign of wings 

 or margins. Two minute ridges on the upper part, indicated by two lines at A, 

 are the remnants of ancestral petiole margins. On this sketch are shown the three 

 sizes of oil-cells, which are repeated on the crenations. The crenations, large and 

 small, are exact copies of the original. The Malta lemon leaf and rind have very 

 fine and distinct aromas. The main nerves branch towards the edge, and their 

 branches anastomose. This is the character of all the citrus leaves I have examined. 

 On the upper surface the larger oil-cells can be seen as low miliary projections. 

 On the under side the two larger sizes can be seen as dark green dots on a light 

 green surface. The third and smallest size can be only seen by transparency. 



b and c are rain leaves, and d & typical spring leaf. 

 e is the spine. 



In fig. a the open rings represent the largest oil-cells ; the large black dots, the 

 medium-sized oil-cells ; and the mere points represent the oil-cells of the smallest size. 



