Vol. V, 
FEBRUARY, 1918 
No. 2 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
CONTENTS 
The structure of the uredinium in Pucciniastrum Agrimoniae. 
C. A. LuDWiG and C. C. Rees 55 
Spore formation in Philocopra coeruleotecta Hally J olivette Sax 61 
Selected cycles in Gymnoconia peckiana George F. Atkinson 79 
Aspergillus fumigatus, A. nidulans, A. terreus n. sp. and their allies. 
Charles Thom and Margaret B. Church 84 
PUBLISHED 
IN GOOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
BY THE 
BROOKLYN BOTANIC GARDEN 
At 41 North Queen Street, Lancaster, Pa. 
Entered as second-class matter February 21, 1914, at the post office at Lancaster, Pennsylvania, 
under the act of March 3, 1879. 
