308 
Mycologia 
LITERATURE CITED 
1. Delacroix, Georges, 1903. Sur le parasitisme de Dothichiza populea Sacc. 
et Briard sur diverses especes de Peupliers. In Bui. Soc. Mycol. 
France, v. 19, fasc. 4, pp. 353 - 355 , 3 %s. 
2. , 1906. Une maladie du Peuplier de la Caroline. In Bui. 
Mens. Off. Renseig. Agr. (Paris), t. 5, No. ii, pp. 1355-1363. Also in 
Bui. Soc. Mycol. France, v. 22, fasc. 4, pp. 239-252, i pi. 
3. Heald, F. D., and Studhalter, R. A., 1914. Birds as carriers of the chest- 
nut-blight fungus. In Jour. Agr. Research, v. 2, no. 6, pp. 405-422, 2 
figs., pis. 38-39. Literature cited pp. 421-422. 
4. Saccardo, P. A., 1884. Sylloge Fungorum . . . v. 3 Patavii. 
5. Studhalter, R. A., and Ruggles, A. G., 1915. Insects as carriers of the 
chestnut-blight fungus. Pa. Dept. Forestry Bui. 12, 33 pp., 4 pis. Lit- 
erature cited, pp. 28-32. 
6. Voglino, Piero, 1907. I funghi parassiti delle piante osservati nella pro- 
vincia di Torino e regioni vicine nel 1906. In Ann. R. Accad. Agr. 
Torino, v. 49, 1906, pp. 175-202. 
7. , 1910. I parassiti delle piante osservati nella provincia di 
Torino e regioni vicine nel 1909. In Ann. R. Accad. Agr. Torino, v. 
52, 1909, pp. 277-306. 
8. , 1911. I nemici del Pioppo canadense di Santena. Nemici 
vegetali. In Ann. R. Accad. Agr. Torino, v. 53, 1910, pp. 325-377, 
figs. 1-4. 
Explanation of Plates 
Plate CXCIV 
Fig. I. The top of a black poplar affected and killed by Dothichiza populea. 
Fig. 2. Section of a trunk of a young black poplar recently transplanted, 
showing a young canker caused by Dothichiza populea. The fungus entered 
through a twig. 
Fig. 3. Front view of the canker shown in f. 2. 
Plate CXCV 
Fig. I. Section of the trunk of a black poplar showing an older canker 
produced by Dothichiza populea. 
Fig. 2. A canker still older than that shown in f. i. 
Fig. 3. A section of the trunk of a black poplar from which the bark has 
been peeled, showing two browned, dead areas caused by cankers of the fungus. 
