FROM THE CARPELS. 453 
titious lobes from the outside of the minute partially 
developed petals could be distinctly seen. 
Enation from the stamens——An illustration of this process 
occurred in some double-flowered rhododendrons, which 
presented the following arrangement of parts :—calyx 
and corolla normal; within the latter eight petal-lke 
stamens, forming a pseudocorolla. 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-like wings, two on each side 
EN 
—-~. This disposition was well seen in the anther, 
OO 
half of which was, in some cases, petaloid like the 
filament; in fact, the mner wing of the latter was 
directly continuous with the petal-hke expansion from 
the anther. A section through the latter showed, 
going from within outwards, the cut edges of two 
perfect polliniferous 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 imstances 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 Solanum. 
(See p. 316.) 
