of the Family of Burmanniacee. 381 
of any approach to exogenous structure, places them at an immense distance 
in the natural system. Professor Lindley in his * Vegetable Kingdom’ ar- 
ranges Triuridacee close to Smilacew, no doubt for reasons similar to those 
before enumerated ; so that through Hydrocharidew they are thus allowed to 
approach Burmanniacee, and perhaps through Fluviales, the Araceæ; but 
until we have better evidence of the structure of these plants, it would be idle 
to speculate further on their nature. ! 
Hammersmith, May 1846. 
DESCRIPTION OF PLATE XV. 
Fig. 1. A plant of Ophiomeris Macahensis, Miers, of the natural size. 
Fig. 2. An unopened bud :—magnified. 
3. An expanded flower, seen in front :—magnified. 
4. An expanded flower, seen laterally. 
5. An expanded flower, seen from the summit. 
Fig. 6. An expanded flower, cut longitudinally. 
7. Filament, turned up to show the anther. 
8. Filament, with a portion of the perianthium, seen in profile. 
9. Filament, in its natural position, seen from within. 
Fig. 10. Anther-lobes, in their natural direction. 
Fig. 11. Style and stigma :—magnified. 
Fig. 12. A fruit, with the perianthium fallen off :—of the natural size. 
Fig. 13. A longitudinal section of the fruit, magnified, showing the placenta. 
Fig. 14. A longitudinal section of the fruit, magnified, after the falling off of the disc. 
Fig. 15. A transverse section of ditto, showing the lines of placentation and the position of 
the seeds. 
Fig. 16. Disc, style and stigma :—magnified. 
Fig. 17. Seed, with its funiculus :—highly magnified. 
Fig. 18. Seed, divested of half its testa, to show the included nucleus? ? 
Fig. 19. Included nucleus? 
Fig. 20. Section of a flower of Thismia Brunonis, Griff. (from a specimen in the herbarium 
of Sir W. J. Hooker) :—magnified. | 
Fig. 21. Section of a flower of ditto, with the monadelphous staminal tube turned up to 
. show the anthers, 
