the Ovula of Loranthus and Viscum. 89 
Is the opake line of elongated tissue running through the centre of 
the ovarium, and terminating at the base of the nipple-shaped, cel- 
lular process e, which is central, and opposite to the termination of 
the canal 5, nearly filling up the similarly shaped cavity d. 1a. The 
nipple-shaped process from the same ovarium. 
Fig.2. The same letters have the same references. The canal b is diminished 
in diameter, but increased in length. The tissue of the stigma, and 
that about the apex of the ovarium is yellow. Taken from an ovarium 
before impregnation, but during expansion. 2a. Nipple-shaped pro- 
cess of the same detached ; it has become more conical. 
Fig.3. Longitudinal section of ovarium after impregnation, that is, if the 
appearance of the stigma may be taken as a proof. 
a. Calycine tissue; the viscous tissue has begun to be developed. 
The line 4 is now closed, and of a light brown colour, and d is no 
longer visible, being entirely occupied by the process e: continuous 
with the line Ca two curved brown lines are visible in e, the con- 
vexities of which look upwards. 
(I have never observed more than two lines in this species). A 
lateral excavation is visible at f, the greater part of which is occu- 
pied by the body g, which hangs from the nipple at the termination 
of one of the curved lines. 
Fig. 4. Longitudinal section of a nearly ripe fruit. The viscous tissue now 
occupies the chief parts of the calycine parietes; and is internally in 
opposition with the now fibrous capsule, which is prolonged upwards 
into four or five horns, of which two only are visible in the "e. 
The communication between the stigma and the cavity containing 
the nipple-shaped process e, is still traceable at b. The process e, 
with its two arched lines, has undergone no change. The ovulum g, 
which, I should observe, is reduced to a nucleus, now fills completely 
the excavated cavity. In the axis of the upper half Ne embryo x 
visible in situ: it is rather excentric when compared es the zg à 
the nipple. The original cotyledonary division has disappeared, 
cept towards its apex. 
Fig.5. Ovarium still more advanced. The 
N 
letters have the same references. 
VOL. XVIII. 
