ULMAOEJE. 



147 



verified in BroussoneUa, or the Paper-Mulberry (fig. 102-107), 

 beautiful trees of temperate and tropical Asia, with, leaves very 

 variable in form, and dioecious tetramerous flowers. The male 

 inflorescence is amentiform and analogous to that of the Mulberry. 

 The female flowers have a gambphyllous urceolate perianth and a 

 gynsecium analogous to that of Morus. but with a simple style, 



Broussonetia papyrifera. 



r'^''>:m 



Fig. 102. Foliaceous tranoh (A). 



filiform at its sti^i;matiferous extremity. The fruit is formed of a 

 great number of st^pitate drupes, collected on a spherical receptacle, 

 and the fleshy mesocarp thickens only at the edges in a sort of 

 forceps with elastic branches which drive and project the putamen 

 as the seeds, analogous to those of the Mulberries, mature. 

 Maclura differs very little from Broussonetm, of which it has 

 the flower and male inflorescence. But the female flowers are 

 destitute of a calyx with independent folioles, like that of the 



10—2 



