Columbia subject headings:
Harvard subject headings:
Botany--Colombia
Botany--Ecuador.
Botany--Peru
Botany--South America
Woody plants--Colombia.
Woody plants--Ecuador.
Woody plants--Peru.
Princeton subject headings:
Botany--Colombia.
Botany--Ecuador.
Botany--Peru.
Woody plants--Colombia.
Woody plants--Ecuador.
Woody plants--Peru.