Datura metel
German expert on hallucinogenic plants Christian Rätsch, basing his contention on the researches of Hungarian scholar Dr. Bulcsu Siklós of London's SOAS (an authority on Vajrayana, the wrathful deity Bhairava and other aspects of Buddhism), asserts an Asiatic origin for "Datura metel",(Siklós claiming that references to the use of the plant may be found in the Vajra-mahabhairava-tantra (= "diamond-thunderbolt "Tantra" of the great and terrible one" (i.e. of the wrathful Shiva conceived of as a bodhisattva)), the Vamana Purana, the Garuda Purana), the Matsya Purana, the Amarakosha and the Kama Sutra of Vātsyāyana).