Fig 
Fig 
Fig 
MR. J. MIERS ON THE HIPPOCRATEACEJE OF SOUTH AMERICA. 425 
. 10. The ovary before expansion. 
. 11. A longitudinal section of the same. 
. 12. A transverse section of the same. 
. 18. The calyx, disk, stamen, and the ovary beginning to grow. 
. 14. A longitudinal section of the ovary, as in the preceding figure, showing the mode of growth of 
the cells of the ovary. 
. 15. A longitudinal section of two of the same cells in a contrary direction, showing the position of 
the ovules not yet increased in size: all magnified. 
. 16. A fruit produced from a single ovary, consisting of three bivalved capsules: nat. size. 
. 17. A single valve of one of the capsules, fallen off. ; 
. 18. The pedicel, receptacle, and four seeds in their natural position, produced in one of the capsules. 
and from which the valves have fallen away. 
. 19. One of the same seeds, supported upon a large membranaceous wing, with its lateral raphe, and 
attached to a small basal funicle. 
. 20. The same seed seen edgeway. 
. 21. The basal funicle: all nat. size. 
. 22. The same, magnified. 
. 93. The nucleus of the seed, with half of the testa removed, nat. size. 
. 24. The embryo covered by its inner integument, removed from the testa. 
. 25. The embryo with two very thin foliaceous cotyledons and a minute basal radicle. 
. 26. The same, shown edgeway : all nat. size. 
27. A portion of the pedicel, or branch of the panicle, broken across, showing the spiral threads 
drawn out, which hold one part suspended from the other, magnified. 
PLATE XVII. 
Portion of a plant of Prionostemma aspera. 
. 1. A flower in bud, nat. size. - 
. 2. The same, magnified. 
. 3. The same expanded. 
. 4. One of the five sepals. 
. 5. One of the five petals: both more magnified. 
. 6. The sepals and two of the petals, to show the mode of their insertion beneath the expanded 
margin of the disk, as also the mode of insertion of the stamens. 
. 7. 'The ovary removed from the disk. 
8. The same, showing the commencement of the growth of the cells, as in Hippocratea: both more 
highly magnified. 
. 9. A tricapsular fruit supported on its pedicel, nat. size. 
. 10. One of the capsules with its two valves separated, showing some of the contained seeds. 
. 11. One of the valves of the same, seen edgeway, showing the inside of the cell and the place of 
insertion of the seeds. 
. 12. A seed borne on its membranaceous wing, showing the lateral raphe and its funicular support. 
Fig. 13. A longitudinal section of the nucleus, with the raphe from which the wing has been removed. 
. 14. The basal funicle detached from the raphe. 
. 15. The embryo extracted from the nucleus. 
. 16. The same, seen edgeway. 
. 17. A transverse section of the same: all nat. size. 
3 M 
VOL. XXVIII. 
