Plate XV 



PLATE XV 



Figure 115.— One of the storage cells from liypocotyl of embr3'o 

 represented in figure 116, showing increased size of all parts. 

 X 800. 



Figure 116.— Nearl)' mature embryo, older than that shown in figure 

 ua, and showing the parts represented in the latter. X 35. 



Figures 117 and 118..-Two views of a cotyledon, dissected from a 

 mature embryo, showing position of epicotyl and the overlying 

 cotyledonary sheaths. Figure 118, represents the narrow cleft 

 between the sheaths. X 35. 



Figure 119.— Mature embryo dissected from ripe seed. X 85. 



Figure 120.— Seedling about three days old ; showing cot3'ledon and 

 young stem with the first node, adventitious root with root 

 hairs, and the thick, storage part of the hypocotyl still within 

 the hard shell. X 6. 



Figure 121.— Two views of young seedling; showing long adven- 

 titious root with root hairs, cot3'ledon, epicotyl, &c. The hard 

 shell has been purposely removed from the hypocotyl. X 6. 



