100 BOTANICAL GAZETTE [AUGUST 
three of the five specimens showed it to be similar to that figured for 
the other specimens (fig. 3). 
These intra-ovarial fruits, although they occur on the placentae, 
cannot with certainty be regarded as metamorphosed ovules. 
Instead it is more probable that they were produced from buds 
which developed adventitiously in places which would normally 
be occupied by ovules. The occurrence of adventitious formations 
within the ovary replacing ovules has been observed by several 
‘botanists. Masters" figures and describes a silique of Cheiranthus 
Fic. 6.—Portion of papaya fruit showing secondary pistil as proliferation of stem 
axis; Xr. 25: 
Cheiri which contained an adventitious silique, replacing an ovule, 
within an ordinary silique, and also a grape which had another 
grape inside in the place of a seed. He also quotes and shows 
figures of a case described by BERKELEY? of a carnation in which 
the placentae bore both ovules and carpels. In this case transi- 
tional forms between the normal ovules and their carpellary trans- 
formations were found. Some of the carpels derived from ovules 
produced secondary ovules. MAsrTERs states that in the carnation 
* Masters, M. T., Vegetable teratology. London. 1869 
2 BERKELEY, M. J., Gardener’s Chronicle, September 28, 1850 (p. 612). 
