78 ; BOTANICAL GAZETTE. | April, 
losa, Eriophorum Virginicum, Fimbristylis spadicea, Rhyn- 
i - ol 
ligantha, R. microcarpa, 
a, 
carices the most common are C. flavescens, C. vulpinoidea 
and C. lupulina. This genus is by no means so well repre- 
ut the flora of these lonely swamps is, like the swamps 
themselves, rather monotonous. The collector will often get 
“Through tangled juniper, beds of reeds, 
hrough many a fen where the serpent feeds, 
And man never trod before.” 
There are very few grasses to be met with in the swamps, 
and these are of little interest. Panicum Crus-Galli, Agros- 
tis vulgaris, Panicum dichotomum and Paspalum Floridanum oe 
are about all. : 
he shrubs and trees which sometimes cover the high 
ridges include Gordonia Lasianthus, Stuartia Virginica. 
Magnolia glauca, Cyrilla racemiflora, Oxydendron arboreum, 
uercus aquatica, Q. Castanea, Alnus serrulata, Cupressus 
thyoides, Juniperus Virginiana, Acer rubrum, and one or two 
species of willow, 
The Autumnal changes in Maple Leaves. 
W. K. MARTIN AND S. B. THOMAS. 
The results we would record in this paper were obtained 
from investigati i 
ollege 
t - The object was chiefly to note the 
changes in the cell contents as the death of the leaf ap- 
ated and to localize, so far as possible, the changes 12 
or. : 
_ The structure of the normal green maple leaf is shown 12 
figure 1, consisting of the o 
and below, a single cell in depth, a single layer of rather 
rdinary epidermal layer above 4 
