173 VERBENACEE. 
5. Anther back view. 
6. Ditto front. 
7. Ditto after dehiscence. 
8. Back view of do. 
9. Pollen in water. 
10. Ditto after rupture which soon takes place. 
11. Ovary transverse section of. 
Ditto long section parallel to the carpella. 
13. Pistilum, sepals cut away, style generally ascending. 
14. Base of style. 
15. Stigmata. 
16. Placenta extracted with the ovule somewhat bent back 
to shew their insertion. 
17. Pistillum after fecundation back of a carpellum laid 
open, shewing the situation of the ovula. 
18. Ovulum before fecundation no distinction of coats. 
19. Ovule after fecund, a testa and nucleus combined; 64, 
embryonary sac globular above, in toto clavato, c hilum. 
20. Ovule more advanced, d embryo. The embryonary 
sac is generally bilobed at the apex, here it is membran- 
. ous but not so much as at its globular base, the bilobed 
apex does not become filled with cellular tissue. 
21, 22. Embryonary sacs shewing the bilobed apex ! and 
membranous and membrano-cellular nature. 
23. Ovary and base of style. 
23a. ovulum of do. some time after expansion of the flower, 
excavation of the embryonary sac already commenced. 
Oss. The situation of the flowers in Volkameria is certainly + 
reversed, neither can I yet tell what is the cause of this. 
The 5th petal being certainly next the axis. "That the fissure 
by which the corolla is rendered unilabiate is carried thro’ 
the 2 petals corresponding to the upper lip of other plants 
of the Order is proved, ist by the zstivation and 2nd by 
the situation of the stamina. 
There is certainly some difference between the sestivation 
[m 
d 
