102 
IOWA ACADEMY OP SCIENCE 
DESCRIPTION OF PLATES. 
Plate 1. 
1, ,2, 3, 6. — Conidia. 
0 , 7, 8. — Conidia attached to conidiophores. 
(Drawings have been recopied by Charlotte M. King.) 
Plate 2. 
1, 2, 3, 4, 5, 6. — Conidia germinating. 
7. — Portion of mycelium. 
8. — Portion of leaf affected by H. teres-. 
Plate 3. 
1. — Sclerotium. 
2. — Pycnidium. 
3. — Pycnidiospores. 
