298 



BACTERIAL DISEASES OF PLANTS 



FIG. 230. Buried and surface colonies of Bacterium phaseoii (Idaho isolation) 

 in a thin-sown +15 peptone-beef-agar poured plate. The smooth, wet-shining, 

 yellow, surface colonies show internal markings by direct transmitted light. Plate 

 poured April 11, 1919. Photographed April 18. X 10. Temperature 25C. 



