IN FLOWERING PLANTS, 193 
SIEGESBECKIA orientalis, —PLATE XLVIII.—Fig. 2. 
The ovula have the usual development. 'The embryonary 
sac, (lining which I can observe no other sac) is developed a 
short time before expansion of the flowers. At the time of 
exposure to the male influence, the raphe is nearly completely 
developed : it sends off a branch on one side, and divides about 
half-way round the opposite side of the ovulum into three 
or four branches, which terminate towards the outer lip of 
the foramen. It is external with regard to the axis: with 
regard to the absence of the inner lining of the embryonary | 
sac, it is obvious that the same appearance would result 
from the sac being hollow. I have not hitherto ascertained 
its existence in any Composite. The cotyledons at the epoch 
of maturity alternate with the true faces of the seed! I have 
not ascertained their situation in the young state, the em- - 
bryo being at this time movable by the slightest pressure. 
It is obvious, however, that where the embryo is exal- 
buminous, or in all cases where it fills nearly entirely the 
cavity of the seed, the cotyledons must be parallel to its 
broader faces. Both teguments separate with the pericarp. 
The cells of the inner are grumous, with a central and diapha- 
nous nucleus. The nucleus only exists at a late period. 
a 
ar anthesin. 
g. 
c. Outer tègumen, showing the relative situation of the 
ramification of the raphe to the cotyledon. 
d. A little before anthesin. 
e. Long before anthesin. 
J. At anthesin. 
Suddyah : 18th, 1836. 

SPILANTHES,—PLATE XLVIII. —Fic. 3. 
Ovule as in other Composite, but the celtalarity of the 
embryonary sac is less discernible. 
2€ 
