Annals of Botany 
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EDITED BY 
ISAAC BAYLEY BALFOUR, M.A., M.D., F.R.S. 
KING’S BOTANIST IN SCOTLAND, PROFESSOR OF BOTANY IN THE UNIVERSITY 
AND KEEPER OF THE ROYAL BOTANIC GARDEN, EDINBURGH 
DUKINFIELD HENRY SCOTT, M.A., LL.D., F.R.S., P.L.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 
AND 
ROLAND THAXTER, M.A., Ph.D. 
PROFESSOR OF CRYPTOGAMIC BOTANY IN HARVARD UNIVERSITY, CAMBRIDGE, MASS., U.S.A. 
ASSISTED BY OTHER BOTANISTS 
VOLUME XXV 
With Eighty-seven Plates, and One Hundred and Seventy-eight 
Figures in the Text 
Z i q A-° 3 
LONDON 
HENRY FROWDE, OXFORD UNIVERSITY PRESS, 
AMEN CORNER, E.C. 
Edinburgh, Glasgow, New York, Toronto and Melbourne 
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