SYSTEMATIC BOTANY OF NORTH AMERICA. 
UNDER THE EDITORSHIP OF 
N. L. BRITTON, . JOHN ae seidplenshigg F. V. CovILLE 
Columbia College, Lake U.S. Dept. of Agriculture, 
York City. take test, Til. Washington, D 
EDWARD L. GREENE, BYRON D. HALSTED, ARTHUR HOLLICK, 
University of California, Rutger’s College, Columbia College, 
Berkeley, Calif. New Brunswick, N. J. New York City. 
UCIEN M. UNDERWOOD, 
De Pauw University, Greencastle, Ind. 
CoLuMBIA COLLEGE, NEw YORK, November —, 1893. 
My sige SIR:— 
roposed to publish a comprehensive, descriptive Flora of the 
United Bais and British America in t eneral sequence of the larger 
groups adopted in ‘Die Naturliche Pflanzenfamilien’? of Engler and 
antl, thus including all the known plan his area. In or 0 
accomplish this, the widest co-operation of American Botanists is desired, 
and I am authorized by the Board of Editors to invite your interest and 
suleiee 
The work will be issued in parts averaging about 100 pages each in royal 
octavo or small quarto size. About 5 of these parts will constitute a volume, 
and it is estimated that about 75 parts, making 15 volumes, will be required. 
No illustration is contemplated, but copious references to published plates 
In 
an es will be made a feature. addition to the technical characteri- 
zations, chapters dealing with the economic, palzontologic and horticul- 
tural ects of each order will be ap Especial attention will be 
d 
given to the verification of original descriptions, to the examination of 
type Lasoo to the citation of type localities, and to geographical 
distributio 
No ait will be made to ‘treat the ve glign Samet but the . 
sequence of orders being toot established in ,an num- 
ber of genera and species being approximately aaa it is siaibte to 
print parts of all the volumes, or of as many of them as is desired at about 
the same time. It is hoped that five or six parts can be issued annually, 
ices in 1896. Several parts are already in preparati 
in preparing monographs of various groups, or in superintending their 
apenas 
Prof. Thos. C. Porter, Lafayette College, Easton, Penn.; Prof. Chas. E. 
sey, University of Nebraska, Lincoln, Neb.: P 
ace sity of Wisconsin, Madison, Wis Prof. Wm. *Preleds ; 
. A. Arthu 
ce Ind.; Dr. Thomas Morong, Colonia College, New York City; 
February 26, 1894. 
