1895.] Botanical Society of America. 405 
leaves found in Amboy clays, and showed ten plates illustrat- 
ing them. These are paralleled by the rudimentary leaves 
and early stages of perfect leaves of Liriodendron, so that the 
history of the fossil species is epitomized in the living. 
THAXTER, ROLAND: The Laboulbeniacee. —Mr. Thaxter 
displayed a number of plates prepared in illustration of his 
monograph on this group, and used them in explaining some 
very important and novel points in the morphology and life 
history of its members. 
THAXTER, ROLAND: Notes on aquatic fungi.—The author 
described the structure of Monoblepharis, and then gave 
an account of the morphology of a new genus with mul- 
ticiliate zoospores, a description of which will be published 
later. 
COVILLE, FREDERICK V.: A synopsis of North American 
rushes. —Mr. Coville discussed the probable phylogeny of the 
' various groups of the genus Juficus, and pointed out the cor- 
respondence of some forms to the area of their geographical 
distribution. 
BRITTON, ELIZABETH G.: Some corrections in the descrip- 
tion of Coscinodon Raut and C. Renauldi, and a comparison 
of the two species.—Read by title, at the author's request. 
ARNES, CHARLES R., and TRUE, RODNEY H.: Summary of 
a revision of the North American species of the genus Di- 
cranum.—This paper was presented by Mr. Barnes. A pre- 
liminary list of species recognized was distributed, and com- 
ments made upon the more puzzling groups. A list of ex- 
cluded species contains seventeen out of the eighteen ‘‘new 
species” recently proposed by Kindberg and Carl Miiller. 
At the close of the reading of papers the society proceeded 
to elect by ballot two members to serve as councilors for the 
ensuing year. B. L. Robinson, of Cambridge, and George F. 
Atkinson, of Ithaca, were elected. 
The society then adjourned szne die. 
