282 METAMORPHY. 
-metamorphosed ;; sometimes the change is complete, 
while at other times there may be every conceivable 
intermediate condition between one form and another. 
The sense in which the terms metamorphosis, substi- 
tution, transformation, and the like, are herein used 
has already been explained. For the convenience of 
arrangement, metamorphosis of the parts of the flower 
may be divided into several subdivisions, according to 
the particular organ affected, and according to the 
special kind or degree of change manifested, the main 
subdivisions being here classed as Sepalody, Petalody, 
Staminody, and Pistillody. 
Sepalody of the petals—This change, spoken of by most 
authors as retrograde metamorphosis of the petals into 
sepals, or as a substitution of sepals for petals, is 
obviously a condition that is in most cases hardly 
distinguishable from virescence of the corolla, or from 
multiplication of the sepals. Nor is this of much 
consequence unless there are some special structural 
features which render the discrimina- 
tion a matter of importance, in which 
case the difficulty is generally easily 
surmounted. The flower of the Saint- 
Valery Apple may perhaps be cited 
under this head. In the flower in 
Fi¢.152.—Flower Question there are neither stamens 
of St. Valéry apple, nor petals, unless the second or inner 
with sepaloid Pe- row of sepals be considered as sepa- 
loid petals (fig. 152). 
M. Alph. de Candolle’ describes an instance in 
Primula Auricula in which the corolla had assumed the 
appearance of the calyx, but neither calyx nor corolla 
in this case possessed perfect stomata. 
This malformation 1s much less common than the 
converse one of calycanthemy. Many of the recorded 
instances of so-called metamorphosis of the parts of 

1 ‘Neue Denkschrift. Schweiz. Gesellsch.,’ band v, p. 9. 
