▼1 PREFACE. 



Should the favourable reception of the Flora Boreali- Americana authorize 

 such a step, and should the materials from this and other parts of our possessions 

 comprised within the range of these volumes, accumulate sufficiently, and within 

 a reasonable space of time, nothing would give the Author more pleasure than 

 to add a third volume, which should include the whole of the Cryptogamia and 

 the species discovered since the publication of what is now presented, together 

 with remarks on the Geographical Distribution of the entire Flora of these 



regions 



W. J. HOOKER, 



Glasgow, May 1, 18-10. 



