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THE EDITORS MEDICAL BOTANY. 



SEVENTEENTH CLASS, DIADELPHIA. 



Cowhage (Dolichos pruriens). 



This perennial climbing plant, 

 which belongs to the Jussieuan 

 order, LeguminoscE, is a native of the 

 tropics, flowering from September 

 to March. The flowers, which are 

 blood red, grow in drooping spikes. 

 The corolla has two oblong scales at 

 the base of the standard ; the fruit is 

 a leathery pod, in the form of the 

 Italic f, containing from three to five 

 seeds. The part used are the short 

 brown bristly hairs which cover the 

 pods. 



a The flower. 



b The ten stamens and pistils 

 which lie folded up in the keel-like 

 petals of the flower. The stamens 

 are divided into two bodies, of which 

 nine form the lower, c, and one, the 

 upper, d. 



e The pistil. 



EIGHTEENTH CLASS, POLYADELPHIA. 



Lemon Tree ( Citrus medico). 



This evergreen tree, which be- 

 longs to the Jussieuan order, Auran- 

 tice, is a native of Asia, cultivated in 

 the south of Europe. The flowers, 

 which are large and purplish white, 

 grow on the smaller branches. The 

 calyx is saucer-formed, five-cleft, 

 with pointed teeth ; the corolla with 

 five petals oblong and concave ; the 

 fruit is large, and egg oblong. The 

 juice of the fruit, and the essential 

 oil of its rind, are the parts used. 



a Flower, showing the division of 

 the stamens into three bundles. 

 b Section of the fruit. 



