YaMPOLSKY: Stiidy of OU palm. 171 



Plate VIII. 



Figures 58 and 59. Cross and longitudinal sections of tliick shelied fruit., X !. 

 Figures GO and Gl. Cross and longitudinal sections of iiiediuin tliick shelied fruit. X 1, 

 Figures 62 and 63. Cross and longitudinal sections of thin shelied fruit. X 1. 

 Figures 64 to 67. Cross sections of thin shelied forms showing distribution of the 



fibres outside the shell X 1. 

 Figures G8 and GO. Cross and longitudinal sections of pisifcra fruit, x l. 

 Figures 70 to 75. Cross sections through varions levels of the pisifera fruit. X 6. 

 Figure 76. Portions of a thin shell. X 6. 



„ 77. „ „ a médium shell. X 4. 



„ 78. „ „ a thick „ X 4. 



79. Fiundle from shell. Outer zone of thickened cells — inner zone of 



bast and central zone of conducting tissue. Some stone cells are 

 seen surrounding the bundle. X 120. 



Plate IX. 



Fig. 80. Section through endosperm and surrounding structures of a pisifera fruit. 

 Description in text. X 1-0. 



Plate X. 



Fig. 81. Longitudinal section of mature seed showing the position of the embryo 



near the germ pore. X l'A'. 

 Fig. 82. Embryo in resting condition. X 40. 

 Fig. 83. Embryo showing haustorium enlarging. X l'A- 

 Fig. 84. Embryo of the above magnified. Constrictioii in the middle more pro- 



nounced. X 40. 

 Figs. 85 to 94. Varions stages in germination. Shell removed to show the growth of 



the haustorium. X L 

 Fig. 95. Radicle bursting through sheath tearing it in a regular fashion. X 25. 

 Figs. 96 and 97. Side and under view of the operculum. X 25. 



Plate XI. 



Figs. 98 to 101. Seeds with 1, 2, 3 and 4 seedlings respectively. X 1. 



Figs. 102 to 104. Seedlings with haustoria; 1, 2 and 3 haustoria in the seed respect- 

 ively. XI.' 



Fig. 105. Part of the shell and endosperm removed to show the end of an 



haustorium and its zone of activity. x 2V2- 



PLATE XII. 



Fig. 106. Seedling with two functioning leaves, still attached to the seed. X •• 

 Fig. 107. Half of shell removed to show complète absorbtion of endosperm. The 



haustorium shows no sign of degeneration. X '• 

 Fig. 108. Seedling with unfolding leaf and still attached to haustorium. The shell 



has been removed to show the form of the haustorium. X 2 72- 



