Bui. 759, U. S. Dept. of Agriculture. 
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PSEUDOPEZIZA ON HOST PLANTS AND PURE CULTURES. 
A, Leaf-spot of Medicago lupulina caused by Pscudopeziza medicaginis (Lib.) Sacc. B, Pseudopeziza 
medicaginis developing m pure culture from spores discharged on plaster of Paris (right) and filter 
paper (left). C, Leaf-spot of red clover caused by Pseudopeziza trifolii (Biv.-Bern.) Fckl. at an earlv 
stage of development. Apothecia have not yet appeared. 
