the Ovula of Loranthus and Viscum. — - 75 
part of the process corresponding to the termination of the curved line“. This 
sac consists of a single cell or vesicle enclosing many grumous, opake, ovate, 
or angular bodies; it has a broad attachment, and is the rudiment of the 
ovulumf. Simultaneously the viscous tissue has made its appearance. 
As the development proceeds the viscous tissue inereases, the sac enlarges 
and becomes cellular, and its attachment narrower. It soon assumes a broadly- 
obovate form, its attachment becoming at the same time exceedingly narrow. 
At this period a vesicle is seen inclosed within the tissue at the commencement 
of its narrow neck . This tissue soon assumes the appearance of albumen. 
The viscous tissue is well developed, occupying the whole of the apex of the 
fruit (the prolongation of the canal remaining isolated in its centre), and 
extending to the base of the fruit, to which point it gradually narrows. The 
figure of the ovarium has changed, four or five prolongations beginning to 
appear towards its apex. No change has taken place in the process, and the 
two brown curved lines are still visible. Its stalk, as the albuminous-looking 
ovulum enlarges, becomes pushed on one side. The ovulum reaches a con- 
siderable development before any change in the embryo occurs. When s. 
cornua begin to appear, the embryo is globular, cellular, exceedingly minute, 
and attached to the nipple laterally. It is not entirely enclosed, but lodged 
in a cavity in the albumen. | à : 
When the fruit is about half developed, the parietes of the ovarium are in- 
durated, and its prolongations are very distinct. The ovulum, which bas for 
some time assumed the appearance of albumen, and the form of the ovarium, 
has 4 or 5 horns corresponding to the prolongations of the former, snd z 
many obtuse angles. The stalk of the process has become detached from t : 
surrounding tissue, except towards its base, and is pushed considerabl y sa 
side. The apex of the process is slightly elongated and pap Pies irs. 
has increased and assumed a more oval form; it has likewise become — 
that is, it occupies the axis of the albumen. As the fruit increases in size, 
i indicati he first 
the embryo becomes unequally emarginate at the apex, indicating the 
i ther 
trace of a cotyledonary division|. No further changes take place in the o 
t Tab. X. fig. 1. 
* Teb. ux. ip. d. § Tab. XI. fig. 10, 11 & 12. 
i Tab. X. fig. 4. 
| Tab. X. fig. 4. & Tab. XI. fig. 14. 2 
L 
