66 Dr. D. Prain — Note on Bouhle Eice. [Aprti,^ 



ovarian walls. It happens that all the figures numbered 8 a — e are- 

 drawn from ovaries that were contained in the same flow&r. 



After the stamens wither, it is most usual to find that only 2 

 ovaries continue to develop {see fig. 9),. and then not infrequently otie 

 of these fails to grow as fast as the other (see fig. 10) ; but very often 

 both grow equally (see fig. 11), and the result is the 'double rice.' In 

 this case the inner faces of both the grains are flat with a whitish 

 vertical central band (see fig. 12), and on section, the emhyro of each i& 

 found at the outer, or glumal, aspect of the base of the gi-ain. 



In a few cases three gi-ains are developed, and then instead of having 

 flat faces (see fig. 14<), they meet in the centre at the white line already 

 mentioned (see fig. 15), this line being at the apex of an obtuse angle; 

 the embryo is in each case at the outside, as before. 



The accompanying Plate shows all the peculiarities noticeable in 

 the flowers of this sport. The sport comes true to seed. 



Explanation of the Plate. 

 Plate V. "Double" Eice. 



1. Spicule of "Double Rice" (OryzasativaL., race ' Karaal bhog ' — sport.) 



nat. size. 



2. Single flower, v 4. 



3. Single flower, lower glumes removed, x 4. 



4. Single flower, outer upper glume removed, x 4. 



5. Floral whorls, x 8. 



6. Lodicule, x 16. 



7a. Anther, x 16. 7b. Style and stigma, x 32. 



8. Five ovaries from same individual flower, which had seven ovaries, x 16. 



a. two-styled perfect ovary. 



b. three-styled perfect ovary. 



c. two-styled perfect ovary, styles cohering at base. 



d. pale flaccid ovary with only one style and stigma. 



e. flaccid imperfect ovary with cohering styles aud imperfect stigmas, 



and with an abortive ovary adlierent to it laterally. 



9. Fertilized flower : two ovaries developing, growth of the others an*ested, x 4. 



10. Another flower: one ovary so developed as to fill the glumes ; a second that 



has been fertilized arrested in its growth at stage reached in flower 

 of fig. 9, X 4. 



11. Another flower : two ovaries fully developed, x 4. 



12. Inner face of one of the young i.'rains shown in fig. II, x 4. 



13. Vertical section of flower in stage reached in fig. II, showing embryos at ■ 



outer aspect of base in both, x 4. —In a normal rice grain the embryo 

 is at the base of the lodicular side, i.e., on the side averse from the 

 inner fertile and towards the outer empty upper glume. 



14. Transverse section of flower in stage shown in fig. II, indicating position 



of embryos, x 4. 



15. Transverse section of flower in which three ovaries have developed, x 4. 



