Plate X 



PLATE X 



Figure 57, a and b.— Two views of a mature theca, the dotted 

 triangular region representing the region of attachment to the 

 connective, x 30. 



Fig-ures 58-66. — Median longitudinal sections illustrating develop- 

 ment of the pistils. 



Figure 58. — Section through flower rudiment; showing primordia 

 of two pistils, an anther-connective at each side, x 75. 



Figure 59.-— Section of older stage ; showing the beginning of the 

 development of the stylar canal. X 75. 



Figure 60.— Older stage. X 75. 



Figure 61. — Older stage. One-sided development of the pistils com- 

 X 75. 



Figures 62 and 63. — Stigma commences to form. Stylar canal \\'ell 

 developed. X 75. 



Figure 64. — Stigma assumes peltate form. Ovule and embryo-sac 

 well developed. X 75. 



Figures 65 and 66. — Development to approximately the mature 

 form of pistil ; showing the gradual oblique orientation of ovule. 

 Figure 65, X 75 ; tigure 66, X 37. 



