1892. ] Papers before the Botanical Ciub. 293 
B. D. HaLtsteD: Weeds and weed roots.—Photographs 
' of the plants described in his ‘‘Century of American Weeds,” 
and also of the root systems of classified groups of these 
n 
hown. 
V. CovILLE: The re-discovery of Funcus Coopert. 
N. L. Britton: Zhe North American Amelanchiers.— 
There appear two well marked species along the eastern 
coast: A. Canadensis, an upland form with birch-like leaves, 
and A. spicata, a swamp form of smaller growth and more 
spicate inflorescence. These do not appear to intergrade, 
but their western range and variations are not yet well 
nown. Beside these two, the other species of the genus 
were briefly described and illustrated with herbarium speci- 
mens. The genus is believed to contain seven American species. 
Material for study, especially from the interior, is solicited. 
C. ARTHUR: 
§lass cage is set in a convenient zinc trough for holding - 
Water, and the roots protected from light by zinc sides. It 
is designed for the study of geotropism, the relation of roots 
to soils, etc, : 
-L. Brirron: The botanical garden movement in New 
York.—The present very favorable condition of the project 
fora New York garden was outlined, and the opinion given 
AUGUST 22D, AFTERNOON SESSION. 
— E.G. BRITTON: Ox the genus Campylopus in North 
spoke aad a general account of the genus, he author 
arated ¢ a new species, C. Millspaughi, which has been ee 
tion — C. flexuosus, with abundant material for distri u- 
and s Wo other new species were mentioned, and drawings 
Pecimens exhibited. 
