チョウセンアサガオ
The occurrence of a plant known as "da dhu ra" is investigated in the pre-11th century "Vajra-mahabhairava-tantra", an Indian Buddhist tantric text existent in Tibetan translation. Internal evidence from the texts, and linguistic evidence, identifying "da dhu ra" as "Datura metel" is given despite current certainty of the New World origin of the genus Datura.