Annals of Botany 
l V l 
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 
D. H. SCOTT, M.A., Ph.D., F.R.S. 
HONORARY KEEPER OF THE JODRELL 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 
VOLUME XIX 
With Thirty-three Plates and Seventeen Figures in the Text 
£on&on 
HENRY FROWDE, M.A., AMEN CORNER, E.C. 
OXFORD: CLARENDON PRESS DEPOSITORY, 116 HIGH STREET 
