SPURIOUS DISSEPIMENTS. 277 
false dissepiments commonly arise from projections of the 
placentas inwards ; or by corresponding growths from some 
other parts of the walls of the ovaries. Some of these are 
horizontal, and are called phragmata, as in the Cassia Fistula 
(fig. 614), where the ovary, after fertilisation, is divided by 
a number of transverse dissepiments, which are projections 
from its walls. Others are vertical, as in Cruciferous plants, 
where the dissepiment, called a replwm (fig. 615, cl), is formed 
from the placentas. Also, in Datura Stramoniwm, where the 
ovary is formed of two carpels, and is hence normally two- 
celled ; but instead of thus being bilocular, it is four-celled 
below (jig. 616) from the formation of a spurious vertical dis- 
sepiment, but towards the apex it is two-celled (fig. 617), the 
Hresoides, Ere. 615. Fic. 617. 
Fig. 614. Vertical section of a portion of the mature 
ovary of Cassia Fistula, showing a number of trans- 
verse spurious dissepiments (phragmata).— Fig. 
615. Vertical section of the ovary of the Wallflower. 
ov. Ovules, each attached by a stalk to the placenta, 
cn. cl. Vertical spurious dissepiment called the re- 
plum.— Fig. 616. Transverse section of the lower 
part of the ovary of the Thorn-apple (Datura Stra- 
monium), showing that the ovary is here four-celled. 
Fig. 617. Transverse section of the same ovary 
at its upper part, showing that it is here two-celled. 
dissepiment not being complete throughout, and thus the true 
nature of the ovary is there indicated. In the Gourd tribe 
(fig. 721), also, spurious dissepiments appear to be formed in the 
ovary in a vertical direction by projections from the placentas. 
In the Flax, again (jig. 618, b), spurious incomplete vertical dis- 
sepiments are formed in the ovary by projections from the dorsal 
sutures. In the ovary of the Astragalus (fig. 619), a spurious 
dissepiment is also formed by a folding inwards of the dorsal 
suture ; while in Oxytropis and Phaca (fig. 620), a spurious 
incomplete dissepiment is produced in the ovary of each by 
a folding inwards of the ventral suture. Various other exam- 
ples of the formation of spurious dissepiments might be quoted, 
but the above will be sufticient for our purpose. It should be 
noticed that in our description of spurious dissepiments, we 
