IN GALOTAOPIS PROCERA. 45 
very slight indications of five future dixisions, with a rather 
elevated centre. 
A curious resemblance to antitropous ovula may certainly 
be pointed out. That which is to be the petal, correspond- 
ing to the nucleus; the way the sepals are marked out is 
much like the way in which the tegumentum primum is mark- 
ed out. Pressure in both destroys the markings, reducing 
the whole body to a homogeneous mass. 
The monopetalism is detectable at a very early period, so 
early that it is doubtful to me whether the divisions ever 
reach the base—when the pistillum does not exist, and 
the anthers are mere lobes of the disc, the divisions of the 
corolla do not reach to the plane of the base of the calyx. 
Calotropis procera.—1n the earliest stage the calyx exists 
in the form of 5 unequal sepals; it is lodged in the axilla of 
a lanceolar subulate-ending bract. Pl. 20. (—A.) fig. 1. 
The centre of the calyx, which is connivent, is occupied by 
a disc of large size and considerable protuberance. A little 
later, and this disc will be found to present obscure. appear- 
ances of becoming 5-lobed, and still a little later, and it is 
5-lobed (or divided into 5 PETALS) corresponding in situation 
to the petals. Pl. 20. (—A.) 2. 
In the next stage I observed an additional 5-lobed body 
inside that of the corolla, no ovary. Bracts even cellular. 
The stamina are marked out by a process of a similar 
nature, they exist at first as a disc, then this disc becomes 
5-lobed, the lobes then become separated into 5 bodies, 
which subsequently become stamina. ‘The pistillum up to 
this period can scarcely be said to exist, but when the 
stamina are marked out, it may be found occupying the axis 
in the shape of a depression, witha slightly elevated margin, 
the margin presenting appearances of division into two. 
The calyx has now one vein terminating about 3 from its 
apex, with a tendency to ramify about its middle. Vide, 
PI. 21. (—B.) 1. 2. 
When the flower bud is one line long, the calyx is tolera- 
bly developed, and encloses entirely the parts of the flower. 
The corolla now consists of 5 cellular oblong concavish bo- 
