127 



oculated were yellowish or pale straw-color, as contrasted with the white, 

 uninoculated roots, and they had scant root-hairs. Under the microscope 



FIG. 16. Lesions on unwounded wheat-seed- 

 lings two days after inoculation with conidia of 

 H. No. 1. The shaded portion of the shoot was 

 yellow to brown. 



