1909] Brewster,— Viola Brittoniana at Concord 107 
RECOGNITION OF CORYLUS ROSTRATA AND CORYLUS AMERICANA.— 
It is frequently desirable to recognize these two species in the winter, 
or in the spring while in flower. ‘The writer has found the following 
characters useful in this respect. 
C. AMERICANA. Staminate catkins almost always peduncled; 
their scales tipped with a long reddish point which bears hairs that 
project little or not at all beyond itself; buds decidedly obtuse and 
rounded at the apex; twigs frequently, but not always, bearing scat- 
tered bristly hairs. In flower, the bracteoles behind each scale of the 
staminate catkin project conspicuously beyond the lateral margins 
of the latter, and the previously noted apical characters of the scale 
still hold. 
C. ROSTRATA. Staminate catkins sessile or nearly so, their scales 
with a short light-colored tip which bears a tuft of long hairs very much 
exceeding it; buds narrower and decidedly acute; twigs never bearing 
the long bristle-like hairs except possibly at the nodes. In flower, 
the bracteoles in the staminate catkin project slightly or not at all 
beyond the lateral margins of the scale, which latter is usually more 
arched.— К. M. Wirecanp, Wellesley College. 
VionA BrITTONIANA AT CONCORD, MassACHUSETTS.— Some of 
my botanical friends inform me that the violet with deeply-incised 
leaves now known as Viola Brittoniana Pollard is considered of rather 
sparse and local distribution in eastern Massachusetts. In 1839 the 
late Edward ‘Tuckerman, then a student in the Harvard Law School, 
found the plant (then considered a phase of V. palmata) “ abundant, 
in Concord in this county. The ground was drier where it grew than 
the plant [V. palmata] commonly affects”; and a sheet of his material 
is preserved at the Gray Herbarium. Mr. Walter Deane has speci- 
mens of it which he collected in 1887 on the banks of Concord River 
not far from the Old Manse, where he was staying at the time. I 
do not remember to have noticed it in that particular locality, but 
I have found it commonly enough in a number of places two or three 
miles further down the river and really abundantly in the meadows 
lying just to the eastward of Ball’s Hill, where there must be hundreds 
if not thousands of plants for they are spread over a considerable area, 
growing for the most part only a yard or two apart and sometimes 
within less than a foot of one another. Here, as elsewhere, they shun 
