THE 
NEW PHYTOLOGIST 
A BRITISH BOTANICAL JOURNAL 
EDITED BY 
A. G. TANSLEY, M.A., F.R.S. 
UNIVERSITY LECTURER IN BOTANY 
CAMBRIDGE 
IN CONSULTATION WITH THE STAR 
THE CAMBRIDGE BOTANY SCH 
VOLUME XX 
PAGES VIII AND 248 
WITH TWO PLATES AND NUMEROUS FIGURES 
IN THE TEXT 
WHELDON & WESLEY, Ltd. 
INCORPORATING 
WILLIAM WESLEY & SON 
28 ESSEX STREET, LONDON, W.C. 2 
1921 
