278 SPURIOUS DISSEPIMENTS. 
have not confined our attention to those of compound ovaries 
alone, but have also referred to those of simple ovaries, in which 
they may equally arise. Thus the spurious dissepiments of 
Cassia Fistula, Astragalus, Phaca,and Oxytropis are all examples 
of such formations in simple ovaries. 
Fia. 618. Fic. 619. Fic. 620. 
Fig. 618. Transverse section of the ovary of the Flax (Linum usitatissimum), 
showing five complete and true dissepiments, a, and five incomplete 
spurious dissepiments, 6.—/ig. 619. Transverse section of the mature 
ovary of Astragalus, showing spurious dissepiment proceeding from the 
dorsal suture. Fig. 620. Transverse section of the mature ovary of 
Phaca. 
We have now to consider the formation of the compound 
ovary which presents but one cavity, mstead of two or more, as in 
that just alluded to. Such an ovary is formed either by the 
union of the contiguous margins of the flattened open ovaries 
Fie. 6233 
Fic. 621. 
Fig.621, Transverse section of the one-celled ovary of Mignonette (Reseda). 
c. The lower flattened portion or ovary of one of the three carpels of which 
it isformed. pl. One of the three parietal placentas. Fig. 622. Trans- 
verse section of the one-celled ovary of an Orchis. ¢. The lower portion 
or ovary of oneof the three carpels of which it is formed, slightly infolded. 
pl. One of the three parietal placentas.——/ig. 623. Transverse section 
of the ovary of a species of Poppy. ov. Ovules. plac, plac, Placentas, 
which in the young ovary nearly meet in the centre, and thus the ovary 
becomes almost many-celled, but as the ovary progresses in development 
it is only one-celled, 
of the carpels of which it is composed, as in the Mignonette 
(fig. 621) and Cactus (fig. 631) ; or by the union of carpels the 
ovaries of which are only partially folded inwards, so that all 
their cavities communicate in the centre, and hence such a 
compound ovary is really unilocular, as in the Orchis (fig. 622), 
and Poppy (fig. 623). 
