136 BALSAMINACEiE. 



PLATE 153. Impatiens fulva : — further analyses of the flower and 

 fruit. 



1. Stamens in their natural position, discharging their pollen, magnified. 



2. Vertical section through the stamens and pistil, more magnified, show- 



ing the ovules, and how the internal appendages of the stamens 

 together embrace the summit of the pistil. 



3. An ovule detached, and more magnified ; its thickened raphe project- 



ing beyond the chalaza. 



4. Stamens and pistil, magnified; the upper portion of the two filaments 



next the eye cut away, and the connivent appendages turned back 

 from the pistil so as to show its summit. 



5. Iliglily magnified transverse section, or diagram, of one of the minute, 



prematurely fertilized flower-buds ; the line underneath denoting 

 the position of the bract. (The two lateral sepals valvate and 

 inclosing all the rest of the flower.) 



6. The sepals and petals of the same, displayed in their normal position ; 



namely, with the sepal that represents the spur in the ordinary 

 flowers (here barely concave) next the axis ; highly magnified. 



7. A fertilized flower-bud of the same kind, with its bract, magnified. 



8. The same, with the enlarging ovary carrying away the undeveloped 



floral envelopes on its summit, magnified. 



9. The same at a later period, the fertilized ovary much more enlarged. 



10. A ripe capsule, of the natural size. 



11. The same after dehiscence, with one seed detached, and others still 



attached to the persistent axis ; the spirally twisted valves cohering 

 to the apex of the axis. 



12. A seed, magnified. 



13. The same transversely divided, showing the thick cotyledons. 



14. The same vertically divided contrary to the cotyledons. 



15. Embryo of the same, divided through the short radicle, sliowing the 



plumule, &c. 



