3d64 
In non-technical language, the pistil or the young fruit, below the stigmatic tube, 
shows externally at this time six quite distinct longitudinal divisions, each having 
a median ridge, there being six corresponding depressions or concavities in which 
the six stamens fit, especially at the base. Technically the pistil is a three-celled 
SSS 
Fic. 62.—Flower of Yucca jilamentosa with near petals removed, showing Pronuba in act of ovi- 
‘positing. 
ovary, the style bifid at the tip and united so as to form the stigmatic tube. A trans- 
verse section anywhere about the middle will show that each of the six longitudinal 
sections contains a row of ovules within an ovarian cell. More strictly, the ovules 
are in pairs, as there are but three primary sections or carpels, divided by three 
Fic. 63.— Transverse section of one of the carpels of Yucca pistil: a. ovule; 5. funiculus; ¢, placenta; 
ad, ovarian cell; ¢, fibro-vascular bundles; f, fibro-vascular tissue; 9. primary dissepiment—X 9. 
primary divisions or dissepiments. Fig. 63 shows a transverse section of one of 
these primary divisions or carpels, which well indicates the position of the ovule 
(a), the funiculus (b), the placenta (c), and the ovarian cell (d). As the fruit en- 
larges, the three secondary dissepiments narrow and coalesce, while the other three 
