抄録
Surface characteristics of the crown gall of Sedum erythrostictum and Bryophyllum daigremontianum were observed under scanning electronmicroscope; namely, smooth in the former and rough in the later. Smooth surface partly lignified turning into rough with age, so that both characters would not be hereditary ones. In higher magnification, the surface of smooth galls was not always smooth, but showed irregularly wrinkled structures or incised streaks.
