Columbia subject headings:
Botany--New York (State)
Dicotyledons--New York (State)--Geographical distribution.
Dicotyledons--New York (State)--Identification.
Phytogeography--New York (State)
Harvard subject headings:
Botany--New York (State)
Dicotyledons--New York (State)--Geographical distribution.
Dicotyledons--New York (State)--Identification.
Phytogeography--New York (State)
Princeton subject headings:
Angiosperms--Classification.
Botany--New York (State)