242 
Juncus Canadensis, J. Gay, var. coarctatus, Engelm. Wet shores, etc. 
Elmwood, 1890-91-92; Benedict pond, 1892. Quite abun- 
dant at both these stations. . 
Sagittaria natans, Mx. var. (?) gracillima, Wats. In the summer 
of 1889, while canoeing and collecting on the Ten Mile river 
above the old Hunt’s Grain Mills, in E. Providence, R.I., I no- 
ticed large patches of a plant whose long, narrow, delicate 
leaves floated from 1-3 feet of their length on the surface of 
the water. Paddling a little farther I soon detected the flowers 
and obtained a few good specimens. In examining the plants 
later in the day I was unable to determine the species from any 
book at hand, and they were temporarily pigeon-holed. Be- 
fore an opportunity occurred to again look them over, the 
6th edition of Gray’s Manual appeared, in which the above- 
named variety was described. This proved to fit my speci- 
mens, and the following season I obtained more and better 
ones, but without fruit, although the plants were abundant. 
The river at the place mentioned has been generally consid- 
ered as the boundary between Massachusetts and Rhode Island, 
but according to the latest topographical map (surveyed in 1888) 
the river flows wholly within the borders of the latter State after 
‘once entering at Lebanon, yet nowhere north of Hunt’s Mills is 
it more than a quarter of a mile from Massachusetts. Specimens 
are in the Brown University and Gray Herbaria. 
Potamogeton pulcher, Tuck. Found to be one of the commonest 
pond weeds in many of the pond holes on Block Island. W- 
W. Bailey and Collins. When collected it was supposed to be 
the first record for Rhode Island. It was, however, reported 
from Wakefield in 1890 (to Mr. Bennett). 
Naias gracillima (A. Br.) Morong. Benedict pond, also elsewhere 
by other collectors. 
Carex virescens, Muhl. var. costata, Dewey, 1890. 
C. laxifiora, Lam., var. varians, Bailey. Cumberland, 1886; Provi- — 
dence, 1892. 
C. laxiflora, Lam., var. latifolia, Boott., 1891. 
C. echinata, Murray, var. angustata, Bailey. 
Eragrostis Purshii, Schrader. Abundant along the railway and in — 
woods at Elmwood, R. I., 1884-90-92. 
