MAPLE : CHESTNUT 



115 



and of nearly equal breadth at the base 

 and apex ; body of fruit pubescent. 



Acer campestre, L. Maple (Fig. 21). Wing glabrous, 

 except at the seed-vessel proper, which is more or less 

 pubescent ; the latter very hard and tough, silvery shining 



Fig. 110. Chestnut, Castanea vesca. 1, flowering shoot ; 2, vertical 

 section through cluster of female flowers in their involucre; 3, trans- 

 verse section of ovary ; 4, a male flower ; 5, fruits in their involucre 

 (Wo). 



inside ; seed flattened, embryo green and plaited. Wing 

 linear oblong and slightly curved, obliquely acute, reticu- 

 late, about 30 40 mm. long. 



82 



