PREFACE. IX 



YI., pp. 255 and 353, and Vol. VII., p. 122.) A list of tho.se 

 found by Mr. Brown and other botanists at Hoboken and Com- 

 munipaw, together with a large number of additional species 

 collected at Camden by Messrs. C. F. Parker, I. C. Martindale 

 and Isaac Burk, and not described in Gray's " Manual of Botany," 

 is inserted as an appendix to this catalogue. Those "ballast 

 plants," which are recorded in Gray's " Manual," are admitted 

 into the main catalogue. The plants are mostly natives of 

 Europe, but some are from nearly every part of the globe. In 

 time many species will be added to the list. 



AEEANGEMENT OF THIS CATALOGUE. 



In the arrangement of the catalogue, the sequence of succes- 

 sion of the Exogenous Orders is on the plan of Bentham and 

 Hooker's " Genera Plantarum." The arrangement of the Endo- 

 genous Orders is that of Sir J. D. Hooker, in the English 

 translation of Maout and Descaisne's " Botanique Descriptive et 

 Analytique." The sequence of Genera under the Orders and of 

 Species under the Genera is that of Gray's " Manual of Botany," 

 except in the Liliacese where Watson's " Revision of the Lilia- 

 cese " has been followed. The names are taken from Watson's 

 "Index to American Botany," 1880, as far as that work is 

 published, and chiefly from Gray's " Manual of Botany," 1880, 

 for the remainder of the Phanerogams. 



The arrangement of the Cryptogams is as follows : 



Acrogens — Filices, Lycopodiaceae, Equisetse, Isoetese. 



Anogens — Musci, Hepaticese. 



Thallogens — Lichens, Fungi, Characese, Algse. 



The general geographical distribution of the phanerogamous 

 Flora of New Jersey is of very great interest. The northern 

 part of the State is covered with a soil composed of material 

 brought from the north by the ice sheets of the glacial epoch, 

 and consists of boulders and pebbles of many diffi-ent kinds of 



