56 
—— A fungous infection of the ear. Jour. N. Y. Bot. Gard. 
13: ee, 127. 
Report of A Director of the laboratories. Bull. N. Y. 
Bot. Gard. 8 
The ae are of the chromosomes and their serial 
arrangement in Pe are Archiv fiir Zellforschung. 9: 
114~-140. pl. 71, 
Williams, R. 8S. ne ie Sull. & Lesq. in North 
America. Bryologist15: 10. Ja 1912. [Illust.] 
Ww Or sean mosses from Panama. Contr. U. 5. 
Nat. es 16: 2 F 1912. 
—_— The genus ee Doz. & Molk. in America. 
Bryologist 15: 31. 
Wilson, P. Notes on Rutaceae—VI. Species of Spathelia. 
Torreya 11: 262-264. f. 1-5. Ja 19 
Botanical exploration in ae ean N. Y. Bot. Gard. 
13: cee F Igt 
he scans of the Jamaica candle-wood tree. Jour. 
a Gard. 13: 25, 26. F 1912. 
CONFERENCE NOTES 
A monthly conference of the scientific staff and registered 
students of the New York Botanical Garden was held in the 
main laboratory on January 6 
ir. Guy West Wilson presented some of the results of his 
studies under the topic ‘‘ Notes on Peronosporales.”” The report 
was confined in the reain to a discussion of certain species of the 
genus Peronospora. As an introduction the essential taxonomic 
characters were discussed. These include the suet of the 
odspore, the color, form and size of the conidia and the form, 
size, and development of the conidiophores. One of He most 
important and constant characters is found in the form and 
size of the ultimate branchlets of the ee ee Or The 
odéspore characters do not show a sufficient range of variation, 
generally in determining species, while the size and number of 
