MR. JOHN MIERS ON A NEW.GENUS OF THE BURMANNIACEÆ 475 
a line thick, surmounted by four bracteiform leaflets, 2 lines long, 1 line broad, in de- 
eussate opposite pairs. The pedicel, in flower, seldom exceeds half an inch, but ulti- 
mately grows to a length of an inch; the tube of the perianth is 4 lines long, 3 lines 
indiameter in the middle, and suddenly contracted for a short space to a breadth of 
2lines; the three inner segments are 3 lines in diameter, auricularly cordate at base, 
where they are furnished with a short claw 1 line broad, attached to the edge of the 
throat; the three outer alternate segments originate a little below the contraction of the 
throat, are 4 lines long, half a line thick, in their coiled state somewhat subulate, at 
first horizontal, but soon curving downward; the filaments, pendent from the throat of 
the perianth, are opposite the segments, half a line long, the connective being of the 
same length, and its two erect horns equally long; the style and stigma are each half a 
line long; the capsule 3 lines long, and 3 lines broad across its mouth. 
DESCRIPTION OF PLATE LVII. 
Fig.1. Entire plants of Myostoma hyalinum in flower and in seed, natural size. 
Fig.2. A flower, with a portion of the stem, showing the leaves, magnified. 
Fig.3. A longitudinal section of the same, showing the position of the stamens, style, stigma, and two of 
the parietal placentze, with the seeds removed. 
Fig.4. An inner segment of the border, outside and inside view. 
Fig. 5. Transverse section of one of the outer segments of the border. 
Fig.6. A stamen seen from within, more magnified. 
Fig. 7. The same seen sideways. | 
Fig.8. The same on the side facing the perianth, showing the extrorse anthers. 
Fig. 9. A grain of pollen, very highly magnified. : 
Fig. 10. The capsule seen from above, showing the position of the placentze, natural size. 
Fig.11. A capsule, with the contained seeds, magnified. 
Fig. 12. Seeds, a little magnified. 
Fig.13. A seed suspended by its funicle, much magnified. 
Fig. 14. A portion of the funicle, very highly magnified. 
Fig. 15. The outer integument, showing the manner in which it splits 
having been removed, much magnified. 
Fig. 16. The nucleus, after removal. 
Fig. 17, The integument of the nucleus after the contents are removed. 
Fig. 18. The contents of the same, consisting of several irregular spherules, 
scale. 
Fig. 19. One of the spherules, more magnified. 
Fig. 20. The minute oily globules and sporule-like atoms, int 
highly magnified. 
by pressure, the included nucleus 
all magnified on the same 
o which the spherule is resolved by pressure, 
