STUDIES OF THE DEVELOPMENT OF PEFEROMIA HISPIDULA 339 
Fig. 52. Section showing surface of wall of mature pollen grain. X 1,315. 
Fig. 53. Approximately longitudinal section through young flower, showing 
ovule and two stamens. X 148. 
Fig. 54. Longitudinal section of young ovary. X 148. 
Fig. 55. Longitudinal section of ovary, showing carpels and primary arche- 
sporial cell of ovule. X 338. 
Fig. 56. Longitudinal section of ovary and subtending bract, showing vascular 
connection of these with floral axis. Definitive archesporial cell and parietal cell 
in ovule. X 148. 
