A 



TEXT-BOOK OF BOTANY 



BY 



Dr. EDUAED STEASBUEGER 



PROFESSOR IN THE UNIVERSITY 

 OF BONN 



Dr. LUDWIG JOST 



PROFESSOR IN THE UNIVERSITY 

 OF STRASBURG 



Dk. heineich schenck 



PROFESSOR IN THE TECHNICAL 

 ACADEMY OF DARMSTADT 



Dr. GEOEGE KAESTEN 



PROFESSOR IN THE UNIVERSITY 

 OF HALLE 



FOURTH ENGLISH EDITION 

 REVISED WITH THE TENTH GERMAN EDITION BY 



W. H. LANG, M.B., D.Sc., E.E.S. 



BARKER PROFESSOR OF CRYPTOGAMIC BOTANY IN THE UNIVERSITY 

 OF MANCHESTER 



WITH 782 ILLUSTRATIONS, IN PART COLOURED 



MACMILLAN AND CO., LIMITED 

 ST. MAETIN'S STEEET, LONDON 



1912 



