24 DEVELOPMENT OF THE FLOWER 
Grains = M. the composition very faint, scarcely 
visible. 
. Under nitric acid, which shews the parent cell, and 
renders the composition distinct enough. 
10. Bud, well advanced laterally. 
11. Same, sepals removed. 
12. Lateral view of the column and labellum. 
13. Front view of the column, lateral stigmata very 
distinct. 
14. Lateral ditto of the column. 
15. Same anther removed, caudicula also pulled parti- 
ally out of its situation. 
16. Pollen grain — M. composition very faint. 
16. Same, after the application of iodine and nitric acid. 
17. Long double section of young bud. See 18. pi. 8, 
shewing the venation of anther and anticous stigma. 
18. Transverse section of the ovarium ditto. 
Intended to shew that the 
caudicle is not a pro- 
20. Ditto more advanced. disitiosibrttad vi giani 
21. Dite ditio. but a separation of cen- 
tral line of the tooth. 
Some stages of the development are still a desiderata, but 
in this as in many other Orchidez, the top of the inflores- 
cence is generally abortive ; so that unless the whole spike or 
whatever it may be, be very very young, there is an abrupt 
transition between the uppermost flowers to be developed, 
and those becoming abortive. 
Results. 
Simple development of pollen, the original parent cells 
remaining up to this time, the nuclei or granules appear to 
have a distinet coat. 
^ Differs from the ordinary rule, in parent cells not open- 
ing and letting grains escape, and probably in the parent 
cell forming the outer tegument of the pollen. 
Development in the young pollen mass, of a waxy cover- 
ing to the periphery although not as in Dendrobium Dalhou- 
sianum provided with a proper coat. 
d 
ke 
19. Column of young bud in 
front, anther removed. 
