THE 
NEW PHYTOLOGIST. 
A BRITISH BOTANICAL JOURNAL, 
EDITED BY A. G. TANSLEY, M.A. 
UNIVERSITY LECTURER IN BOTANY, CAMBRIDGE, 
IN CONSULTATION WITH THE STAFF OF THE CAMBRIDGE BOTANY SCHOOL. 
assistant-editor : 
F. CAVERS, D.Sc. 
VOLUME XII. 
PP. VIII. AND 368. 
WITH SIX PLATES AND NUMEROUS FIGURES IN THE TEXT. 
LONDON 1913 
WILLIAM WESLEY & SON 
28 Esskx Street, Strand. 
