Chap. III. CEPHALANTHERA GRANDIFLORA. 



81 



view B, and side view C, in fig. 13). Whilst the flower 

 is still in bud, the pollen-grains which rest against the 

 upper sharp edge of the stigma (but not those in the 

 upper or lower parts of the mass) emit a multitude of 



B 



Cephalanthera. graxdiflora. 



anther; in the front view, B, 

 the two cells with the included 

 pollen are seen. 



one of the two lateral rudimen- 

 tary anthers, or auricles. 



masses of pollen. 



stigma. 



distal portion of the labellum. 



A. Oblique view of perfect flower, 

 when fully expanded. 



B. Front view of column, with all 

 the petals and sepals removed. 



C. Side view of column, with all the 

 sepals and petals removed ; the 

 narrow pillars of pollen (p) 

 between the anther and stigma 



] can just be seen. 



tubes ; and these deeply penetrate the stigmatic tissue. 

 After this period the stigma bends a little forward, and 

 the result is that the two friable pillars of pollen are 

 drawn a little forward and stand almost completely free 



4147 



