126 



COMMERCIAL BOTANY. 



In Japan the plant is cultivated for paper-making, the 

 young shoots being used for the purpose. 



CALIFORNIAN "CACTUS." Under this name the stems 



PAPEB MULBEBBT (Browssonetia papyri/era). 



of a plant were brought to the notice of the Kew authori- 

 ties in 1877 as a valuable paper material. It was difficult, 

 from the material first brought, to determine its botanical 

 affinity. In 1878, however, further material came to hand, 



