PLATE no 
Midrib crowngall on Bryophyllum calycinum, showing 5 roots developing from one 
of the tumor lobes at X. There were also 16 roots developing from other lobes under 
the arrow. Midrib at M . Midrib tumors on three other leaves in this series also 
showed roots. Inoculated June 23, 1920. Photographed November 18. X 5 * 
