164 BIGNONIACE.E, 
5a. Ditto ditto. 
6. Stamen outer view of. 
6a. Inner ditto. 65. lateral. 
7. Pollen, opaque. 
7a. Viewed in water. 
8. Ovarium and calyx. 
8a. Ditto calyx removed. 
9, Ovarium. 
9a. Ditto longitud. section. 
95. 'Transverse. 
10. Ovula with portion of the filament, the filaments pro- 
bably are connected with fecundation. 
11. Partium situs et alternatio, this must be so modified as 
to make the single petal anticous; the three forming . 
this angle with the axis. 
Opss. It is not improbable that the Malyan Millingtonex 
are distinct from the India ones, at least from M. sim- 
plicifolia. 
Dr. Jack's explanation of the structure of M. Sumatrana 
appears to me perfectly correct as regards the petals and 
staminia, the 3 large petals, being equilateral, equally veined ; 
although rather unequal in size, and the two smaller being 
similarly central veined, and attached precisely to the bases 
of the fertile staminia, as the barren ones are to the larger 
petals. 
With the Malyan plant, I only hesitate about the calyx, 
which I find to be 3-4 sepalled imbricately, the pedicels 
being 1, 2, bracteate, I see no difference in the venation of 
the sepals. 
I would rest the distinction temporarily upon the fact of 
the estivation of the large patals being nearly valvate, it is 80 
along 2 of the 3 edges on the zquilaterality of the big petals, 
on the entireness of the smaller ones, or the want of auricule 
to the base of the barren anthers, and on the dehiscence of 
the anthers which is curious, and of the reflexed valve. 
