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CHAPTER V. 



THE ORDER RUBIACE^ : ILLUSTRATED BY THE CINCHONA, OR 

 PERUVIAN BARK ; LUCULIA GRATISSIMA ; CAPE JASMINE ; 

 RONDELETIA ; COFFEE ; IXORA ; IPECACUANHA ; MADDER ; 

 GALIUM ; WOODRUFF ; AND CRUCINELLA STYLOSA. 



This order contains more than two hundred 

 genera ; but by far the greater part of these are 

 composed of tropical plants, many of which are 

 not yet introduced into Britain. Several of the 

 genera, on the other hand, are British weeds ; 

 and this difference in habit, with others in the 

 qualities of the plants, &c., have occasioned 

 some botanists to divide the order into two : one 

 of the new orders being called Cinchonacese, and 

 containing the plants most resembling Cinchona ; 

 and the other Galiacese, containing the plants 

 most nearly allied to Galium or Bedstraw. 



The characteristics of Rubiacese, in its most 

 extended sense, are that the ovary is surrounded 

 by the calyx, and placed below the rest of the 

 flower ; and that the corolla has a long tube, lined 

 with the dilated receptacle, in which the stamens 

 are inserted. In most of the species, the fila- 

 ments are very short, and the anthers nearly or 

 entirely hidden in the corolla; and in many cases. 



