PLATE 1 6 



Phomopsis kalmiae: 



A. — An i8-dayH3ld culture on steamed com meal enlarged about 5 times. Note 

 the extruding spore masses. Photographed by Mr. James F. Brewer. X 6. 



B. — A 1 5-day -old culture on same m.edium, natural size. Later, the peripheral 

 pycnidia extruded cirri freely, but the central ones did not. Photographed by Mr. 

 James F. Brewer. X i-i- 



C. — Portion of corn-meal agar plate on which were sown three bisected sterile 

 pycnidia. One half of each pycnidium was covered with sterile glass, and no spores 

 were produced. The section left uncovered produced spores within five days, as 

 here shown at X. Slightly reduced. 



D. — Section through a pycnidium, showing the sporophores and the nucleated 

 hypha; just below them. X 175- Photomicrograph by the writer. 



E. — A portion of same section shown in figure A more highly magnified; about 

 500. Photomicrograph by the writer. 



