140 MR. J. MIEBS ON SOME GEKERA OF THE OLACACEyE. 



* 



Fig. 5. The 2 sepals, removed from the calycle where they were seated ; 



6. The corolla, which with the sepals are seated on the concave base of 



the calycle ; 



7. The corolla, with its basal portion agglutinated to the ovary, the 



superior tubular portion cut open to show the hairy patches at the 

 base of the segments: all magnified. 



8. A stamen (enlarged), shown in three positions ; the 5 stamens are in- 



serted in the mouth of the tube, opposite to the hairy patches. 



9. A tetrahedral grain of pollen : exceedingly magnified. 



10. The ovary, style, and stigma: slightly enlarged. 



11. The ovary, crowned by the persistent, conical, 5-lobed disk ; 



12. A longitudinal section of the same, showing it to be unilocular at the 



summit, trilocular below, with a central line up the middle, indi- 

 cating the union of the three dissepiments, from the apex of which 

 3 minute o\ules are suspended : both magnified. 



13. The fruit : natural size. 



14. The same, supported by the calycle and sepals, and surmounted by the 



persistent disk : much magnified. 



15. A longitudinal section of the same, showing its solitary suspended seed, 



the placenta and 2 abortive ovules still remaining ; 



16. The solitary albuminous seed without any integument ; 



17. A longitudinal section of tile same, with its included embryo ; 



18. The embryo extracted, showing the superior radicle and 2 much 



smaller cotyledons : all magnified on the same scale. 



Plate VII. 



Fig. 1. A plant of Quinchamalium eh 'dense. 



2. A portion of the inflorescence : natural size. 



3. Portion of the quadrangular peduncle, bearing on each of its 4 faces a 



row of persistent calycles, from which the flowers have fallen away ; 



4. A concave calycle : both somewhat magnified. 



5. A flower seated in its calyx ; 



6. The flower removed: both natural size. 



7. The 5-toothed globular calyx, one of the teeth lunger than the others ; 



8. The base of the tube of the corolla adnate to the ovary, enclosed within 



the free calyx ; 



9. The corolla separated: all magnified on the same scale. 



10. The upper free portion of the corolla cut open to show the 5 stamens 



placed opposite to its segments ; 



11. A stamen, shown in front and side way : slightly magnified. 



manner of aestivation : enlarged. 



igments 



13. A portion of the style and stigma : much magnified. 



14. The ovary, surmounted by the persistent disk ; 



15. A longitudinal section of the same, showing it to be unilocular, with a 



free central placenta rising from the base, bearing on its apex 3 

 suspended ovules : both magnified. 



16. A fruit, enclosed within the persistent calyx ; 



17. The fruit extracted : both natural size. 



^m 



