Plate XIV 



PLATE XIV 



Figure 107.— Part of longitudinal section through older embr3^o, 

 showing origins of cotyledon and stem apex. X 375. 



Figure 108. — Section of embryo from which figure 107 is taken. 

 X marks the region figured, x 75. 



Figure 109. — Longitudinal section of embryo measuring about 

 0.35 mm. in length ; showing development of cotyledon and 

 stem-apex or epicotyl. X 50. 



Figure 110. — Basal region of embryo shown in previous figure, 

 illustrating the group of cells which forms the rudimentary 

 primary root. X 300. 



Figure 111.— Single storage cell from hypocotyl of embryo shown 

 in ligure 109, showing enclosed starch grains. X 600. 



Figure 112. — Upper part of longitudinal section of nearly mature 

 embryo shown in figure 113; showing stem-apex with growing- 

 point and second leaf rudiment, part of cotyledon with section 

 of basal sheath, and adventitious root X 212. 



Figure 113. — Longitudinal section of nearly mature embryo from 

 which figure 112 is drawn; showing hypocotyl, epicotyl, cotyl- 

 edon, and adventitious root. X 35. 



Figure 114. — One of storage-cells from hypocot}'! of embr}^o shown 

 in ligure 113. X 600. 



