THE MULBEEEY. 



Mor'vs ni'gra Poir. 



The great majority of broad-leaved trees belong to 

 those groups whicb, owing to their general lack of a 

 corolla, and sometimes of a calyx as well, have long 

 been known as Incompletce. In plants with flowers 

 thus simplified the stamens and carpels not infre- 

 quently occur either in different flowers on the same 

 tree, when the plant is termed monoecious, or even 

 on distinct trees, when it is termed dioecious. In 

 these Incompletce, moreover, whether the stamens 

 and carpels are thus separated or not, there js 

 commonly a lack of both honey and perfume. 

 In the absence of these inducements, insects do not 

 visit the blossoms ; and, in the production of a large ' 

 amount of small smooth - grained pollen, often 

 maturing in stamens which hang prominently out 

 of the flower, and which may even ripen before 

 the leaves unfold from the buds in early spring- 

 we see especial adaptations for wind-pollination. 



An assemblage of groups with such simple types 

 of flower was known as the Urtica'cece, or NettlQ 

 Order, and not only Nettles, but Hemp, Hops, Figs, 

 Mulberries, Breadfruit, and Elms were all lumped 

 together into this one Order, until botanists themselves 

 recognised it.^s a mere confession of ignorance and 

 came to know it as " the marine-store shop." 



The Order Mor'acece, as at present limited, con; 



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