ROSACEA. 



Each consists of a free filament,' inflexed in the bud, and an introrse 

 two-celled anther dehiscing longitudinally. Below tlie insertion of 

 the stamens the receptacle is lined by a glandular disk of variable 



Pynis communis. 



Fig. 458. 

 Longitudinal section of flower. 



thickness at the edge, which may either reach the top of the receptacle, 

 or leave bare a zone of variable breadth below the insertion of the 

 perianth and androceum. The gynteceum consists either of five 



Pt/riis Malus {Common Apple). 



Fig. 4G0. 

 Lougitudinal section of fruit. 



Fig. 4G1. 

 Transverse section of fruit. 



carpels superposed to the sepals,- or of a smaller number, often two. 

 Each is formed of an ovary buried in the bottom of the receptacle, 

 whose free inner edge is traversed by a longitudinal groove, and con- 

 tinuous with an erect style terminating above the receptacular sac 



' Or rarely cohering near its base with the 

 neighbouring filaments, though only for a short 

 extent, just as in Eriuji/na. 



• The pollen grains are ovoidal, with three 



folds, and in water they become spherical, witli 

 three bands, according to H. Mohl {Ann. Sc. 

 Nat., ser. 2, iii., 3 lO). It is the Siime with till 

 the Pomacece examined by this botanist. 



