Vol. XXVI. No. CIII. July, 1912. Price 14s. 
Annals of Botany 
* \ \ 
EDITED BY 
DUKINFIELD HENRY SCOTT, M.A., LL.D, D.Sc., F.R.S. 
LATELY HONORARY KEEPER OF THE JODRELL LABORATORY, ROYAL BOTANIC GARDENS, KEW 
JOHN BRETLAND FARMER, D.Sc., M.A., F.R.S. 
PROFESSOR OF BOTANY, ROYAL COLLEGE OF SCIENCE, LONDON 
FRANCIS WALL OLIVER, M.A., D.Sc., F.R.S. 
QUAIN PROFESSOR OF BOTANY, UNIVERSITY COLLEGE, LONDON 
AND 
ROLAND THAXTER, M.A., Ph.D. 
PROFESSOR OF CKYPTOGAMIC BOTANY IN HAUVARp UNIVERSITY, CAMBRIDGE, MASS., U.S.A. 
ASSISTED BY OTHER BOTANISTS 
LONDON 
HENRY FROWDE, OXFORD UNIVERSITY PRESS 
AMEN CORNER, E.C. 
Edinburgh, Glasgow, New York, Toronto and Melbourne 
1912 
Printed by Horace Hart, at the Clarendon Press, Oxford 
