XXI INTIiODIU ri<»N. 



PLAN OF THE CATALOGUE. 



'J'lio names of the species supposed to be indigenous to the New 

 World are printed in heavy faced type. The names of the plants 

 supposed to be introduced from the Old World are printed in 



SMALL CAPITALS. 



The uouieiiclature folloAved, in the m.'iin, is that of the Index 

 Kewensis. The names used in the sixth edition of Gray's Manual, 

 when they differ essentially from the names in the Kew Index, are 

 given in parentheses. The nomenclature of the Illustrated Flora, 

 by Britton and Brown, has been added in italics when it differed 

 from that given in the Kew Index; but where this change is simp- 

 ly a "gender ending" of a specific name, it has been omitted. 



In reference to the occurrence of a plant in its proper habitat the 

 terms, common, frequent, infrequent, occasional, local, and rare, 

 are used to express relative abundance. The Ifist two need some 

 explanation. Local, plentiful at the station, but the stations few; 

 rare, not more th.'in four stations, and the plants few at each. 



Plant.'; a\ ithout a catalogue riumber are supposed not to be estab- 

 lished. ^-^ 



The dates of the flowering of plants are given as aids in collect- 

 ing. They were obtained from my notes on six successive years' 

 observations averag«'d with dates ta'Kcn from the herbariums men- 

 tioned. 



The term Cily, in the Catalogue, alwjiys refers to the City of 

 Grrand Rapids — Grand Rapids, in every cHse, applies to the town- 

 ship. Thi^ township name is used alone; as, Ad^, etc. If a village 

 has the same name as the township, it is so specified; as, Ada Vil- 

 lage. 



In all cases I have endeavored to givepropercredit by initials or 

 name to the discoverer of a new y^lant or a new station for an in- 

 frequent, local, or rare one. When no name appears, the plant 

 has come under my own personal observation, and is contained in 

 my herbarium. 



*Three are inserted wMrh pro-tv ne.ar the hnrdev of the di<;trict. 



