A DICTIONARY 



OF THE 



FLOWERING PLANTS 



AND 



FERNS 



BY 



J. C. WILLIS 



M.A., Sc.D., Hon. Sc.D. (Harvard), F.R.S. 



EUROPEAN CORRESPONDENT, LATE DIRECTOR, BOTANIC GARDENS 



RIO DE JANEIRO 



FOURTH EDITION 



REVISED AND REWRITTEN 



CAMBRIDGE: 



AT THE UNIVERSITY PRESS 



1919 



