Fig. 94*.—Portion of the interior of the silicle in Cheiranthus Cheiri, showing adventitious pod in the place of an ovule.
Fig. 95.—Adventitious pod from fig. 94, enlarged.
Here, too, may also be mentioned the presence of an adventitious siliqua within the ordinary one attached along the same line as the ovules, and partially divided by a replum into two cavities. In this case there was nothing to indicate the presence of floral envelopes (figs. 94, 95). A similar occurrence has been brought under my notice in some grapes which were observed to be cracking before they were perfectly ripe, and in which adventitious fruits were found within the parent grape, occupying the position of seeds (figs. 96, 97).
Similar anomalous growths are noticed under the heads of Substitution and Prolification.
Formation of stamens within the cavity of the ovary.—The only instance of this that has come under the author's observation occurred in some flowers of Bæckea diosmæfolia, Rudge, for an examination of which he is indebted to Mr. Bentham.