PETALODY. 297 
the number of these organs and similar changes affect- 
ing the pistils, and is applied to several distinct condi- 
tions. If in any given flower all the stamens and all 
the pistils become wholly petaloid, no pollen is formed, 
and of course no seeds can be produced, but this very 
rarely happens, as usually some pollen is produced, 
and some ovules capable of being fertilised are deve- 
loped. 
In double flowers of Prinuwla sinensis it frequently 
happens that the capsule is either partially leafy or 
partly petal-hke; in either case the fruit is open at the 
extremity, and often destitute of the style and stigma. 
It is, however, doubtful if the ovules can be fertilised 
in these flowers. 
The followmg lst comprises the names of those 
genera in which this change has been most frequently 
observed, independently of corresponding alterations 
in the stamens, but it is more usual for both sets of 
organs to be similarly affected. 
*Ranunculus ! Alcea. 
* Anemone ! Hibiscus ! 
Nigella. Amyegdalus ! 
*Papaver ! Lonicera ! 
*Dianthus ! Scabiosa. 
Saponaria ! Adschynanthus ! 
Viola ! Primula ! 
Camellia ! 
Petalody of the ovules—The principal changes which 
occur in the ovule have already been alluded to at pp. 
262—272; it may here be stated, however, that the 
ovules are occasionally represented by small stalked 
petal-like structures. This happens with especial fre- 
quency among Crucifere.’ 
Petalody of the accessory organs—A petaloid condition of 
the disc, of the scales, or other excrescences from 
the axis or from the lateral portions of the flower, is of 
frequent occurrence, though it is but rarely that the 
change is of any great importance in a morphological 
1 See Baillon, ‘ Adansonia,’ li, p. 351, tab. 12, Sinapis. 
