Nal PREFATORY NOTE 
been almost confined to works by specialists on the subject, 
and each of these records is indicated by a special mark 
in the context, as the specimens upon which they were 
founded have not been examined by the author, as have 
all the others with the exception of five or six which 
are marked “in litt.” 
The author wishes to thank all those botanists who have 
sent plants for examination, also those who have afforded 
opportunities for the inspection of Herbaria. 
INVERMOIDART, ACHARACLE, 
ARGYLL, August 1910. 
