Bui. 1298, U. S. Dept. of Agriculture 
Plate XX 
Representative Molds Isolated From Ground-wood Pulp 
Fig. 1.— Bulbils of Papulospora nigra (X 150) 
Fig. 2. — Conidiophores, spores, and mycelium of an unidentified species of Dematiaceae, cul- 
ture No. 3818-1 (X750) 
Fig. 3.— Conidiophores and mycelium of an unidentified species of Dematiaceae, culture No. 
10918-7 (X750) 
Fig. 4.— Conidiophores, spores, and mycelium of an unidentified species of Dematiaceae, 
culture No. 92219-2 (X 750) 
