North American Flora 
HIS work is designed to present detatiptions 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 catia the aid of the income of the David Lydig Fund 
bequeathed by Charles ; 
It is planned to issue parts as rapidly as they can be prepared, the 
number of points. The veaabia work will form a series of volumes 
with the following sequenc 
Volu pas. Schizophyta Diatomaceae. 
Volumes 14 and 15. Br saabials 
Volume 16. Pteridophyta and Gymnospermae. 
Volumes oe - 19. Monocotyl heh 
Volumes 0 30. Dicotyledon 
he p reparation of the work has eae referred by the Scientific Direc- 
tors of the Garden to a committee consisting of Professors L. M. Under- 
wood and N. L. ‘Britt tton. 
Professor George F. Atkinson of Cornell University, Professors Charles 
R. Barnes and John M. Coulter of the University of Chicago, Mr. Fred- 
erick V. Coville of the United States Department of Agriculture, Pro- 
fessor Edward L. Greene of the United States National Museum, Pro- 
essor Byron D. Halsted of Rutgers College and Professor William Tre- 
lease of the Missouri Botsion 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. chy limited num- 
ber of separate parts will be sold at $2.00 each. Addre 
THE NEW YORK BOTANICAL sei 
BRONX PARK, New YorRK City 
Volume 7, Part 1, Ustilaginales, including Ustilaginaceae and Tilleti- 
aceae, by G. P. Clinton, was issued Oct. 
Vol. 7, Part 2, Coleosporiaceae, Uredinaceae and Aecidiaceae (pars), 
of the oe by J. C. Arthur, was issued March 6, 1907. 
Volume 22, Part 1, including eee by ‘George V. Nash, 
Crassulaceae Sp N. L. Britton and J. N. Rose, and Penthoraceae and 
sagen jetting by P. A. Rydberg, was issued May 22, 1905. 
me 22, Part 2, including Saxifragaceae and ap ationeery by J. 
K. Small and P. A. Rydberg, Semone Be Iteaceae and Hamamelidaceae 
by ritton, Pterostemonaceae by J. K. Small, MGnplaces by Percy 
Wilson and Phyllonomaceae by H. H. Rusby, was issued Dec. 18, 1905. 
