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No. 67. Phycological Studies —I, New Chlorophyceae 
from Florida and the Bahamas, by Marshall Avery Howe. 
No. 68. Bryological Notes —II, by Elizabeth Gertrude 
Britton. 
No. 69. The Polyporaceae of North America— XI, A 
Synopsis of the Brown Pileate Species, by William Alphonso 
Murrill. 
No. 70. The Polyporaceae of North America— XII, A 
Synopsis of the White and Bright-Colored Pileate Species, 
by William Alphonso Murrill. 
No. 71. Studies on the Flora of Southern California, by 
LeRoy Abrams. 
No. 72. Phycological Studies—II, New Chlorophyceae, 
new Rhodophyceae and miscellaneous notes, by Dr. M. A. 
Howe. 
No. 73. Studies on the Rocky Mountain Flora — XV, by 
Dr. P. A. Rydberg. 
Nortu AMERICAN FLORA 
This 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 Vene- 
zuela 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. 
It is planned to issue parts as rapidly as they can be pre- 
pared, the 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 10. Fungi. 
Volumes 11 to 13. Algae. 
Volumes 14 and 15. Bryophyta. 
Volume 16. Pteridophyta and Gymnospermae. 
