136 NATURAL HISTORY OF PLANTS. 



are cultivated for ornaments : some species of Corydalis, Dicentra 

 jormosa and spectabilis, and Adlumia cirrhosa with its delicate climb- 

 ing stems. In the other series, gardeners prize the various species 

 of Eschscholfzia, Platystemon, and Platystigma, the white and yellow 

 flowered Argemones, the Bocconias of the section Macleya, the Indian 

 species of Meconojjsis, especially the blue ones, and numberless 

 Poppies, such as P. orientate and bracteatum, and the handsome, 

 numerous varieties and double forms of P. somniferum and persicum. 



