YamPQLSKY : Sùidy of OU palm. m 



Plate XVI. 



Fig. 127. Longitudinal eut tlirough seed and seedling showing the connection hetween 

 the vascuLir System of tlie plant and the liaiistoriuin. The bundles passing 

 from the neck-piece into the hausturium are peripherally arranged in the 

 haustoriuni. X I'^- 



Fig. 128. Longitudinal section through an haustorium showing the varions zones- 

 Explanation in text. X 1-0- 



Fig. 129. Longitudinal section of haustorium and seedling. Lobed character of haus- 

 torium more pronounced. Explanation in text. X 60. 



Fig. 130. Cross section through endosperm and haustorium. Explanation in text. 

 Note the zones in endosperm. X 60, 



Fig. 131. Like above, but later stage. X 60. 



Fig. Vi2. Cross section through neck-piece of haustorium showing the bundles in 

 a ring. X 80. 



Fig. 133. Vascular bundle magnified agreeing in the main with the bundie in the 

 Shell (Figure 79, Plate Vlil). X 120. 



PLATE XVII. 



Figs. 134 to 136. Starch grains stored in the haustorium. They do not show cor- 

 rosion. X 800. 



Figs. 137 and 138. Starch grains stored in haustorium beginning to be corroded. X 800. 



Fig. 139. Cells of the interior of the haustorium showing the nature of the inter- 

 cellular spaces. Explanation in text. X 600. 



Fig. 140. Lobe of an haustorium in an advanced stage of growth showing the 

 cells of the interior radiating from the bundle. The cells are gorged 

 with starch grains. The outermost layer — the fermentation layer shows 

 the présence of very many tiny starch grains represented hère by dots 

 in the cells. X 80. 



Fig. 141. Single cell directly behind the fermentation cells gorged with starch 

 grains. Many of thèse are polygonal due to mutual pressure. The starch 

 grains show évidence of corrosion. X 600. 



Fig. 142. Cells of the fermentation layer with the remains of the cell walls of 

 the haustorium closely pressed against them. Explanation .in text. X 250. 



Fig. 143. Cell from fermentation layer taken from a stage shown in Figure 142. 

 Explanation in text. X 800. 



Fig. 144. Part of endosperm in stage of being digested. Taken from stage seen 

 in Figure 130, Plate XVL Explanation in text. X 60. 



Fig. 145. Cell walls of cells of endosperm. X 450. 



Fig. 146. Cells ot cork layer around endosperm. X 250. 



