Vol. XX. No. LXXVIII. April, 1906. Price 14s. 
Annals of Botany 
EDITED BY 
ISAAC BAYLEY BALFOUR, M.A., M.D., F.R.S. 
KING’S BOTANIST IN SCOTLAND, PROFESSOR OF BOTANY IN THE UNIVERSJTY 
AND KEEPER OF THE ROYAL BOTANIC GARDEN, EDINBURGH 
D. H. SCOTT, M.A., Ph.D., F.R.S. 
HONORARY KEEPER OF THE JODREL-L LABORATORY, ROYAL BOTANIC GARDENS, KEW, 
AND 
WILLIAM GILSON FARLOW, M.D. 
PROFESSOR OF CRYPTOGAMIC BOTANY IN HARVARD UNIVERSITY, CAMBRIDGE, MASS,, U.S.A. 
ASSISTED BY OTHER BOTANISTS 
Bonbon 
HENRY FROWDE, AMEN CORNER, E.C. 
CLARENDON PRESS DEPOSITORY, 116 HIGH STREET 
1906 
Printed by Horace Hart, at the Clarendon Press, Oxford. 
