

STUDIES IN THE PHYSIOLOGY OF THE FUNGI 



VIII. Mixed Cultures 



S. M. ZELLER 

 Formerly Visiting Fellow in the Henry Shaw School of Botany of 



Washington University 

 and HENRY SCHMITZ 



Formerly 



Washington University 



Some consideration has been given in previous literature to 

 the behavior of fungi in mixed cultures, but this has been suf- 

 ficiently reviewed by Harder, 1 whose work along the line seems 

 to be the most complete. His conclusions, however, are based 

 merely upon observations on the rate of growth and color pro- 

 duction in the medium and mycelium. The purpose of his work 

 was to determine whether the inhibition or stimulation of 

 growth, as the case may be, might not be the result of the de- 

 pletion of the available carbohydrates in the medium or a change 

 in the hydrogen ion concentration. 



In the present work the following fungi were used: Lenzites 

 vialis Pk., Merulius pinastri (Ft.) Burt, Daedalea quercina (L.) 

 Fr., Trdmetes Peckii Kalchbr., Pleurotus sapidus Kalchbr., 

 Merulius lacrymans (Wulf.) Fr., Lentinus lepideus Fr., Daedalea 

 confragosa (Bolt.) Fr., Coniophora cerebella Pers., Polystictus 

 versicolor (L.) Fr., Isaria sp., Polyporus lucidus (Leys.) Fr., 

 Polystictus hirsutus Fr., Aspergillus glaucus, 2 A. niger Van Tieg., 

 A. fumigatus Brizi, A. versicolor Tiraboschi, and A. Sydowi 



Bainier and Sartory. 



All the fungi were grown upon 2 per cent potato agar plates 

 prepared in the manner previously described. 3 After growth 



1 Harder, R. Uber das Verhalten von Basidiomyceten und Ascomyceten in Misch- 

 kulturen. Naturwiss. Zeitschr. f. Forst- u. Landw. 9:129-160. pi. S-4-. /. 



1-2. 1911. 



2 Thanks are due to Dr. Charles Thorn for the determination of the Fungi Imper- 



fecti included in this list. 



3 Zeller, S. M., Schmitz, H, and Duggar, B. M. Studies in the physiology of the 

 fungi. VII. Growth of wood-destroying fungi on liquid media. Ann. Mo. Bot. 

 Gard. 6: 137-142. 1919. 



Ann. Mo. Bot. Gard., Vol. 6, 1919 (183) 



