CHAPTER LXIII. 



DICOTYLEDONS CONTINUED. 



Topic VII: Dicotyledons with distinct petals and 



perigynous or epigynous flowers. 



Many trees and shrubs. 



ORDER ROSALES. 



1169. Lesson XII.' The rose-like flowers are an interesting 

 and important group.' In all the members the receptacle (the 



end of the stem which 

 bears the parts of the 

 flower) is an important 

 part of the flower. It is 

 most often widened, and 

 either cup-shaped or urn- 

 shaped, or the center is 



p .^ 56s elevated. The carpels 



Perigynous flower of spiraea (S. lanceoiata). are borne in the center in 



(From Warming.) 



the depression, or on the 



elevated central part where the receptacle takes on this form. 

 The calyx, corolla, and the stamens are usually borne on the 

 margin of the widened receptacle, and where this is on the margin 

 of a cup-shaped or urn-shaped receptacle they are said to be 

 perigynous, that is, around the gyncecium. The calyx and corolla 

 are usually in fives. There are three families, as follows. 



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