North American Flora 
HIS work is designed to present descriptions of all plants growing 
independent of cultivation, in North America, here taken to include 
Greenland, Central America, the Republic of Panama, and the 
West Indies, except Trinidad, Tobago, and Curacao and other islands off 
the north coast of Venezuela, whose flora is essentially South American. 
It will be published in parts at irregular intervals by the New York 
Botanical Garden through the aid of the income of the David Lydig Fund 
bequeathed by Charles P. Daly. 
t is planned to issue parts as rapidly as they can be prepared, tne 
extent of the work making it possible to commence publication at any 
number of points. The completed work will form a series of volumes 
with the following sequence: 
Volume 1. Mycetozoa, Schizophyta, Diatomaceae. 
Volumes 2 to ro. Fungi. 
The preparation of the work has been referred by the Scientific Direc- 
tors of the Garden to a committee consisting of Professors L. M. Under- 
wood and N. L. Britton. 
Professor George F. Atkinson of Cornell University, Professors Charles 
R. Barnes and John M. Coulter of the University of Chicago, Mr. Fred- 
essor Byron D. Halsted of Rutgers College and Professor William Tre- 
lease of the Missouri Botanical Garden have consented to act as an advis- 
ory committee. 
_Each author will be wholly responsible for his own contributions, 
being restricted only to the general style adopted for the work, which 
must vary somewhat in the treatment of diverse groups. 
The subscription price is fixed at $1.50 for each part; it is expected 
that four or five parts will be required for each volume. A limited num- 
ber of separate parts will be sold at $2.00 each. Address, 
THE NEw York BOTANICAL GARDEN 
BRONX Park, New YorRK City 
Volume 7, Part 1, Ustila inales, including Ustilag; and Tilleti- 
aceae, by G. P. Clinton, vie ine ct 2, oce. ae 
ol. 7, Part 2, Coleosporiaceae, Uredinaceae and Aecidiaceae (pars), 
of the Uredinales, by J. C. Arthur, was issued March 6, 1907. 
Volume 22, Part 1, including Podostemonaceae by George V. Nash, 
A - N. Rose, and Penthoraceae and 
Parnassiaceae by P. A. R dberg, was issued May 22, 1905. 
olume 22, Part 2, including Saxifragaceae and Hydrangeaceae by J. 
id P. A.R s, Cunoniaceae, Iteaceae and Hamamelidaceae 
b _N. L. Britton, Pterostemonac: ae by J. K. Small, Altingiaceae by Percy 
Wilson and Fhyllonomaceae by H H. Rusby, was issued Dec. 18, 1905. 
