^ FEOM THE CARPELS. 463 



titioiis lobes fi'om the outside of the minute partially 

 developed petals could be distinctly seen. 



Enation from the stamens. An illustration of tliis process 

 occurred in some double-flowered rhododendrons, which 

 presented the following arrangement of parts : calyx 

 and corolla normal ; within the latter eight petal-like 

 stamens, forming a pseudocoroUa. The appearance 

 presented by the petaloid filaments and anthers was 

 as if they were adnate to the centre of the petals, 

 but, on closer examination, it appeared that the 

 petaloid expansion to which the dilated filament 

 was apparently attached, was equally a part of 

 the stamens ; in other words, that the filament was 

 provided with four petal-hke wings, two on each side 



y--^v. This disposition was well seen in the anther, 



half of which was, in some cases, petaloid like the 

 filament; in fact, the inner wing of the latter was 

 directly continuous with the petal-like expansion from 

 the anther. A section through the latter showed, 

 going from within outwards, the cut edges of two 

 perfect polHniferous lobes in the centre ; and on either 

 side the petaloid wing representing the remaining 

 anther-lobe; outside these were the edges of the re- 

 maining wings, one on each side. (See p. 290, fig. 155.) 



Enation from the carpels. The only instances of this 

 that need be referred to are such cases as those in 

 which spur-like projections, horns, tubercles, or winged 

 expansions, are formed from the surface of the ovary 

 during the course of its development. The extra- 

 ordinary cornute oranges described and figured by 

 Ferrari, Gallesio, and other writers on the genus Citrus^ 

 may be mentioned under this head. A similar forma- 

 tion occurs in the fruit of some species of Solannm, 

 (See p. 316.) 



