32 1 LAWS OF VAEIATION. Chap. XXV. 



verted into cornucopias, wliicli 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 purj)le flowers, a i^iii'ple 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 alwa^^s have voluminous, 

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

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

 variety of the sj^camore, which has recently been described ia 

 France,^'^ 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.^^ 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,^'-^ 

 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 

 3'ard 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 haA^e 

 contracted flowers : the difference between " Brilliant " and 

 its parent " Tom Thumb " is a good instance of this. It ma}^ 

 be suspected that the curious case described b}^ Eisso,^° of a 

 variety of the Orange which produces on the young shoots 

 rounded leaves with winged j)etioles, and afterwards elongated 

 leaves on long but wingless petioles, is connected with the 



2^ 'Revue des Cours Scientifiques,' stances, * Des Varietes,' 1865, p. 72. 

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



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

 1202. 3** ' Annales du Museum,' torn, xx 



?^ Verlot gives seyej-aj other in- p, 188, 



