340 BOTANICAL GAZETTE. 
tering the grape clusters prevents its attack. He also exhibited 
grape leaves bearing Phoma uvicola, a mode of occurrence which 
had been denied. 
Mrs. Walcott gave an account of a Campanula, probably @. 
Americana, which made its appearance in some unaccountable 
way in a row of wild flowers raised from seeds from other local- 
ities. These seeds were sown in 1880, and the plants moved to 
another spot last season. This year there appeared two stalks of 
the species referred to, apparently, but having some of the flower 
buds two inches long, the calyx bristly and the flower in eights 
throughout. She had also observed seedlings of Yucca _filamen- 
tosa near a plant of that species in the garden. 
Considerable discussion followed. Mr. Campbell had known 
of Yueca fruiting in Michigan. E. F. Smith recited a case in 
which weed seeds had appeared to lie dormant for fifteen years or 
more. It was suggested that in this case there might have been 
a succession of very depauperate individuals, as some large weeds 
ean fruit and so perpetuate themselves without reaching more than 
an inch or so in height, and thus escape observation. 
Professor Barnes called attention to the erroneous figures of 
the stomata of Marchantia in all English works on botany. They 
are shown with six cells in circumference, whereas they have only 
four. The shapes of the innermost cells, the true guard-cells, 
and of the outermost cells of the chimney-like stoma are not cor- 
rectly drawn. 
. L. Seribner exhibited some fine drawings of grasses from 
which photo-engravings had already been taken, and explained 
ow they were made. 
TUESDAY, September 1,9 a. vw. A paper from George U. 
Hays of St. Johns, N, B., on botanical features of New Bruns 
wick was read, which is published in full in the GAZETTE. 
spores of most ferns were germinated in water at ordinary sii 
temperature, and when desiring to carry the growth very far Fell 
transferred to some solid substance and kept moist under a 
r 
The same speaker had found tabular erystals in the base of 
