PLATE 6 
Puccinia graminis tritici form III on Mindum 
A. —Seven-day infection. Portion of infection showing appressorium at b, part of 
the first haustonum d, dead cell at e, and dying cellwitfi haustorium at /. X730. 
B. —Another part of same infection with haustorium a in an epidermal cell. It is 
living but is heavily coated, and the host nucleus b is in attendance. X1460. 
C. —Seven-day infection. Stoma occupied by fungus and showing guard cell 
walls greatly swollen. X730. 
D. --Seven-day infection. Greatly swollen walls in another infection close to that 
in Plate 6, A. X1130. 
E. —Four-day infection. Walls beginning to swell at b and c near dead cell a. X1130. 
