32 1 LAWS OF VAKIATION. Chap. XXV. 



verted into cornucopias, which are enclosed within one another 

 and resemble the true petals. In hose-in-hose flowers the 

 sepals mock the petals. In some cases the flowers and leaves 

 vary together in tint : in all the varieties of the common pea, 

 which have purple flowers, a purple mark may be seen on 

 the stipules. 



M. Faivre states that with the varieties of Primula sinensis 

 the colour of the flower is evidently correlated with the colour 

 of the under side of the leaves ; and he adds that the varieties 

 with fimbriated flowers almost always have voluminous, 

 balloon-like calyces. 26 With other plants the leaves and fruit 

 or seeds vary together in colour, as in a curious pale-leaved 

 variety of the sycamore, which has recently been described in 

 France, 27 and as in the purple-leaved hazel, in which the leaves, 

 the husk of the nut, and the pellicle round the kernel are all 

 coloured purple. 28 Pomologists can predict to a certain extent, 

 from the size and appearance of the leaves of their seedlings, 

 the probable nature of the fruit ; for, as Van Mons remarks, 29 

 variations in the leaves are generally accompanied by some 

 modification in the flower, and consequently in the fruit. In 

 the Serpent melon, which has a narrow tortuous fruit above a 

 yard in length, the stem of the plant, the peduncle of the 

 female flower, and the middle lobe of the leaf, are all elon- 

 gated in a remarkable manner. On the other hand, several 

 varieties of Cucurbita, which have dwarfed stems, all pro- 

 duce, as Naudin remarks, leaves of the same peculiar shape. 

 Mr. G. Maw informs me that all the varieties of the scarlet 

 Pelargoniums which have contracted or imperfect leaves have 

 contracted flowers : the difference between " Brilliant " and 

 its parent " Tom Thumb " is a good instance of this. It may 

 be suspected that the curious case described by Eisso, 30 of a 

 variety of the Orange which produces on the young shoots 

 rounded leaves with winged petioles, and afterwards elongated 

 leaves on long but wingless petioles, is connected with the 



26 'Revue des Cours Scientifiques,' stances, ' Des Vari^te's,' 1865, p. 72. 

 June 5, 1869, p. 430. 29 'Arbres Fruitiers,' 1836, torn. ii. 



27 'Gardener's Chron.,' 1864, p. pp. 204, 226. 



1202. 30 ' Annates du Museum,' torn. xs. 



28 Verlot gives several other in- p. 188. 





