5 ;■><*: 
Botany 
EDITED BY 
DUKINFIELD HENRY SCOTT, M.A., LL.D., D.Sc., For. Sec. R.S. 
LATELY HONORARY KEEPER OF THE JODREI.L LABORATORY, ROYAL BOTANIC GARDENS, KEW 
JOHN BRETLAND FARMER, D.Sc., M.A., F.R.S. 
PROFESSOR OF BOTANY, ROYAL COLLEGE OF SCIENCE, LONDON 
FRANCIS WAFL OLIVER, M.A., D.Sc., F.R.S. 
QUAIN PROFESSOR OF BOTANY, UNIVERSITY COLLEGE, LONDON 
AND 
ROLAND THAXTER, M.A., Ph.D. 
PROFESSOR OF CRYPTOGAMIC BOTANY IN HARVARD UNIVERSITY, CAMBRIDGE, MASS., U.S A. 
ASSISTED BY OTHER BOTANISTS 
(/' 1 \fo^ ,p A C> 
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X 
y 
Annals of 
VOLUME XXX 
With Fifteen Plates and Two Hundred and Eighty-one Figures in the Text 
IS 
LONDON 
Humphrey milford, oxford university press 
AMEN CORNER, E.C, 
Edinburgh, Glasgow, New York, Toronto, Melbourne, and Bombay 
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