Columbia subject headings:
Betulaceae--New York (State)--Geographical distribution.
Betulaceae--New York (State)--Identification.
Botany--New York (State)
Dicotyledons--New York (State)--Geographical distribution.
Dicotyledons--New York (State)--Identification.
Harvard subject headings:
Botany--New York (State)
Plants--New York (State)--Identification.
Princeton subject headings:
Betulaceae--Classification.
Trees--New York (State)--Classification.