(435) 
Volume 10, part 3, containing descriptions of Agarica- 
ceae (pars), by W. A. Murrill, appeared June 25, 1917. 
BULLETIN 
Bulletin No. 35, with 110 pages, was issued April 10, 
1917. It contains the annual reports of the Director-in- 
Chief and other officers for the year 1916. 
Bulletin No. 31, completing the eighth volume of this 
publication, appeared July 10, 1917. It contains two 
scientific papers, one by R. S. Williams on ‘Philippine 
Mosses”’ and the other by Percy Wilson on “The Vegeta- 
tion of Vieques,” together with the table of contents and 
indexes to the volume. 
ADDISONIA 
The second volume of this publication, containing 84 
pages of popular descriptions and 40 colored illustrations of 
plants, appeared in four parts, issued in March, June, 
September, and December. 
CoNTRIBUTIONS 
No. 193. A Note on the Structural Dimorphism of 
Sexual and Tetrasporic Plants of Galaxaura obtusata, by 
Marshall A. Howe. 
No. 194. El Genero Rynchospora Vahl, En Cuba, by 
Nathaniel Lord Britton. 
No. 195. Studies of West Indian Plants—IX, by 
Nathaniel Lord Britton. 
No. 196. Notes on Rosaceae—XI, by P. A. Rydberg. 
No. 197. Notes on North American Species of Riccia, 
by Marshall A. Howe. 
No. 198. Fertility in Cichorium Intybus: The Sporadic 
Occurrence of Self-fertile Plants among the Progeny of 
Self-sterile Plants, by A. B. Stout. 
No. 199. Notes on Plants of the Southern United 
States—III, by Francis W. Pennell. 
No. 200. Fertility in Cichorium Intybus: Self-com- 
