Annals of Botany 
* % % 
EDITED BY 
ISAAC BAYLEY BALFOUR, M.A., M.D., F.R.S. 
QUEEN’S BOTANIST IN SCOTLAND, PROFESSOR OF BOTANY IN THE UNIVERSITY 
AND KEEPER OF THE ROYAL BOTANIC GARDEN, EDINBURGH 
SYDNEY HOWARD VINES, M.A., D.Sc, F.R.S. 
FELLOW OF MAGDALEN COLLEGE, AND SHERARDIAN PROFESSOR OF BOTANY 
IN THE UNIVERSITY OF OXFORD 
D. H. SCOTT, M.A., Ph.D, F.R.S. 
HONORARY KEEPER OF THE JODRELL LABORATORY, ROYAL 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 XIII 
Bonbon 
HENRY FROWDE, M.A., AMEN CORNER, E.C. 
OXFORD: CLARENDON PRESS DEPOSITORY, 116 HIGH STREET 
