PLATE XLVI 



Fig. I. — Photomicrograph of Spofidylocladimti atrovirens on coTn-mesil agar, showing 

 method of development of conidiophores and conidia in the early stages. 



Fig. 2. — Photomicrograph of 5. atrovirens in hanging-drop culture, showing develop- 

 ment of conidiophore and conidia in mature stages. 



Fig. 3. — Negative heliotropism of S. atrovirens on com-meal agar exposed on one 

 side to daylight from April 8 to April 24, 191 5, in laboratory at room temperature. 



