x Preface 



chiefly upon "Gray's Manual" and "Britton and 

 Brown". The scientific names and order of classifi- 

 cation are those adopted by the international Botani- 

 cal Congress, the same as now incorporated in the 

 new seventh edition of ''Gray's." 



CHESTER A. REED, 

 Worcester, Mass. 

 March, 1910. 



