Bul. 759, U. S. Dept. of Agriculture. PLATE I. 
PSEUDOPEZIZA ON HOST PLANTS AND PURE CULTURES. 
A, Leal-spot of Medicago lupulina caused by Pseudopeziza medicaginis (Lib.) Sace. B, Pseudopeziza 
medicaginis developing in pure culture from spores discharged on plaster of Paris (right) and filter 
paper (left). C, Leaf-spot of red clover caused hy Pseudopeziza trifolit (Biv.-Bern.) Fekl. at an early 
stage of development. Apothecia have not yet appeared. 
