178 FERGUSON: CONTRIBUTIONS TO FLORA OF LONG ISLAND 
plants are based mainly upon Britton & Brown’s “ Illustrated 
Flora”’ with the exception of the grasses which are in accordance 
with Hitchcock & Chase and in a number of cases the interpre- 
tation of Professor M. L. Fernald is given prominence. 
EQUISETACEAE. Horsetail Family 
Equiserum fluviaule L. Open swamp. Woodside. 
o ‘> Sag tarbor: 
TAXACEAE. Yew Family 
Taxus canadensis Marsh. Woods, 3 to 4 miles northwest of 
Deer Park. 
Plant 12 to 15 ft. X 12 ft. associated with Lycopodium 
complanatum var. flabelliforme. The writer can find no other 
record of a wild plant on Long Island. Mr. Henry Hicks knows 
of but three, all introduced, on estates. 
Mr. R. W. DeForest—Cold Spring Harbor, Plant 19 years old 
Mr. Paul Dana—Glen Cove, Plant 50 years old 20 ft. X 20 ft. 
Parsons’ Estate—Flushing, Plant 50 years old 20 ft. X 20 ft. 
This wild plant is older than that at Cold Spring Harbor, 
and is either a native survival from colder times or may be due 
to birds carrying the seeds from the Long Island cultivated 
plants or from wild plants further north. 
Note—Britton & Brown’s Illustrated Flora describes the 
leaves as ‘‘dark green on both sides;’’ Gray’s Manual as *‘ green 
on both sides;’’ F. Schuyler Mathews’ Field Book of American 
Trees and Shrubs describes the leaves ‘‘of warm bright-yellow 
green beneath, very dark green above.’’ This last description 
is the only good one. 
ZANNICHELLIACEAE. Pondweed Family 
Potamogeton confervoides Pine barrens, Sandy Pond, Manor- 
Reicht ville. 
Name conferred by Norman 
aylor. 
ALISMACEAE. Water Plantain Family 
Sagittaria teres S. Wats. Growing in water, Kent Pond, 
Manorville. 
Pond northeast of Kent Pond, 
Manorville. 
