PLATE CLXXVII, 



a is the section of the foregoing citrus, Plate CLXXVI. The joinings of the carpels of the 

 rind are obliterated, excepting at the base and apex, and therefore it is impossible 

 to make out whether they are opposite to or alternate with those of the pulp. (Vide 

 reference to Phyllotaxis in Chapter on "Morphology.") In some leaves of this citron, 

 such as b, there is no sign of division between the petiole margin and the edges of 

 the blade, and no sign of a joint, while in others, as in c, the separation between - 

 the two is imperfect. 



d is its spine. 



