114 DESCRIPTIO]\ OF ASSAMESE PLANTS. 



Fig. 10. Ovulum. 



11. Ditto, longitudinal section exposing the nucleus. 



12. Nucleus detached. 



13. Capsule viewed laterally. 



14. Ditto dehisced, in the dry state and one of the valves nearly separated. 



15. Placenta. ~ 



16. Seed. 



17. Inner integument enclosing the embryo. 



18. Embryo. 



19. Ditto, cotyledons displaced. 

 Plate XIX. Kaulfussia assamica. 



The figure on the left exhibits the fern, reduced ; the detached frond on the right is of the 

 largest natural size. 



Fig. 1. Portion of the frond viewed on its inferior or dorsal face. 



2. Capsule viewed vertically and on its lower face, 



3. Ditto ditto upper face. 



4. Ditto longitudinal and central section. 



5. Ditto transverse section towards the middle. 



6. Portion of the membrane of the cells. 



7. Sporules viewed as opaque bodies. 



8. Ditto immersed in water. 



9. Long section of a portion of the frond carried through one of the stomata. 



10. Stoma viewed vertically and exteriorly. 



11. Long section of the apex of a rhezoma. 



