52 
OHIO BIOLOGICAL SURVEY 
EXPLANATION OF PLATE 11. 
Physarum viride (Bull.) Pers. 
Fig. 1. Two sporangia. X 20. 
Fig. la. Portion of capillitium in which are three lime knots. X 400. 
Fig. lb. A spore. X 800. 
Physarum nutans Pers. 
Fig. 2. Two sporangia. X 20. 
Physarum vernum Somm. 
Fig. 3. A group of sporangia. X 20. 
Fig. 3a. Portion of capillitium. X 400. 
Fig. 3b. A single spore. X 800. 
Physarum sinuosum (Bull.) Weinm. 
Fig, 4. Two sporangia, one having ruptures along the upper ridge. X 20. 
Physarum polycephalum Schwein. 
Fig. 5. A cluster of sporangia. X 20. 
