Columbia subject headings:
Buddhism--Doctrines.
Nature--Religious aspects--Buddhism.
Plants in the Tripiṭaka.
Plants--Religious aspects--Buddhism.
Harvard subject headings:
Buddhism--Doctrines
Nature--Religious aspects--Buddhism
Plants in the Tripiṭaka.
Plants--Religious aspects--Buddhism
Princeton subject headings:
Buddhism--Doctrines.
Plants in the Tripiṭaka.
Plants--Religious aspects--Buddhism.