TRbooora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 26. December, 1924. No. 312. 
NOTES ON SOME PLANTS OF EASTERN NEW YORK. 
H. K. Svenson. 
Tue following account is concerned with some noteworthy plants 
of eastern New York, at least two of them being new to the State. 
Unfortunately these records were not communicated to Dr. House 
in time for publication in the recent list of the plants of New York 
State. 
BIDENS BIDENTOIDES (Nutt.) Britton. A single specimen of this 
characteristic species, known previously only from the region of 
Delaware Bay, was collected by Mr. N. C. Fassett of Harvard Uni- 
versity, on the shore of the Hudson River at Glenmont, in September 
1922. A visit by the writer to this locality in October 1922, revealed 
no further material, but across the river in Rensselaer the plant was 
found in abundance in shallow water, partially submersed at high 
tide. At Hudson, some thirty miles below Glenmont, in October 
1923, it appeared commonly on tidal shores. It is therefore to be 
looked for throughout the Hudson estuary. 
ELATINE AMERICANA (Pursh) Arnott. Described by Fernald? 
as occurring “on tidal flats of Cathance River in Maine and on the 
tidal flats of the Delaware, as well as at a few other stations along the 
Atlantic coast.” This plant was collected on tidal mud at Hudson, 
N. Y. in October 1923, and is probably the first true record from New 
York State. Two additional records for this rare plant are from 
New Brunswick: tidal shores of Kennebecasis River, Lakeside, August 
25, 1923, Fassett & Svenson, no. 2015; tidal shores, Mirimichi River, 
five miles above Newcastle, August 19, 1923, Fassett & Svenson, 
no. 2016. 
1 House, H. D.; N. Y. State Mus. Bull. no, 254 (1924). 
2 Fernald, M. L., RHODORA xix. 11 (1917). 
