1911] Tidestrom,— Populus virginiana Fouger. 195 
as much as the time at my disposal would allow at four places — Bay 
of Islands on or near the west coast, St. John’s on the extreme east 
coast, and at Norris Arm and Grand Falls between, and I found this 
blackberry at all of these places except Bay of Islands. But on July 
10, 1910, Professors Fernald and Wiegand found at Goose Pond in 
the valley of the Humber River, seventy miles east of Bay of Islands 
what appears to be the same form having large flowers with wide 
petals, but the new canes were not sufficiently advanced to show the 
expected division of the broad middle leaflet into three. 
Blackberries as I expected were not common and the inhabitants 
seemed to have never seen them. In two cases where persons were 
sure no such plants existed, I showed them the plants were close by — 
in one case a few rods from where a farmer was hoeing and in another 
close to a woman’s house. 
WESTMINSTER, VERMONT. 
POPULUS VIRGINIANA FOUGER. 
Ivar TIDESTROM. 
In Maryland and Virginia there appear to be two distinct forms of 
black poplar which are at present referred to Populus deltoides. These 
are a form that is usually cultivated as P. deltoides Marsh. and P. 
virginiana Fouger. The former is commonly cultivated but up to 
the present time I have not been able to find any trees in the wild 
state, although it appears as if some about Newark, Delaware, might 
be so. At any rate the identity of Populus deltoides Marsh. is uncer- 
tain. According to Marshall! the tree grows naturally in Carolina 
and Florida, but his description seems to apply to the trees in Delaware. 
His description appears to have been taken from “ Bartram’s Cata- 
logue” and he gives due credit to the latter author. The description 
reads in part as follows: “The leaves are large, generally nearly 
triangular, toothed or indented with sharp and deep serrations, of a 
shining full green on their upper surface, but somewhat lighter or 
hoary underneath; standing upon long slender foot-stalks, and gen- 
erally restless or in motion.” 
1 Arbustum Americanum, p. 106. 
