MACKENZIE: NOTES ON CAREX 239 
with it. The first collection was in an upland swale near Alcove, 
New York, on July 5, 1892, by C. L. Shear, and it was later found 
by him in two other localities in Greene County, New York. His 
collections were first doubtfully referred to Carex Sulhivantit Boott, 
and later on were described by Professor Bailey (Bull. Torrey Club 
20: 419. 1893) asa hybrid between Carex gracillima and Carex 
_aestivalis, He, however, pointed out that there were two objections 
to so classifying the plant, the first being that it had characters 
possessed by neither of its supposed parents, and the second 
that Carex aestivalis was not known from the country where the 
present plant was found. Specimens now at hand from the other 
stations emphasize these two points, and show that the plant can- 
not be properly treated as it was by Professor Bailey. 
The next collection was by me in a mountain meadow near 
Greenwood Lake, Passaic County, New Jersey, on June 23, 1907 
(x0. 2676). The plant was not common, but as I collected enough 
to make several specimens, I designate a specimen from this col- 
lection as the type of the species. 
The plant has lately again been found in eastern Pennsylvania 
by Mr. S. S. Van Pelt (Wissahickon ravine, Philadelphia Co., east 
side, above Thorp’s Lane, high up, July 17, 1909). Through 
him it was sent to the New York Botanical Garden with a request 
that he be informed whether it was Carex aestivalis or not. 
As a matter of fact the plant is closest to Carex aestivalts, but 
is distinguished by the larger perigynium, which has a bidentate 
beak, that of C. aestivalis not being bidentate. From Carex Sulli- 
vantil, supposed to be a hybrid between Carex pubescens and C. 
gracillima, it is distinguished by the gynaecandrous terminal spike, 
merely acute or short-acuminate scales, and somewhat narrower 
and less pubescent leaves. I do not know any hybrid it can repre- 
sent, and, as it is certainly distinct enough, I here propose it as a 
species. 
The southern Carex oxylepis, which is closely allied, has wider 
and generally more pubescent leaves and strongly acuminate or 
cuspidate scales. 
/ Carex fulvescers sp. nov. 
Culms loosely cespitose from slender rather short rootstocks, 
erect, 2.5-4 dm. high, rather sharply triangular, smooth or slightly 
