Caption:
Shanin, Petunia integrifolia, used as a hallucinogen. Native of Argentina, John Tweedie sent seeds from Buenos Ayres to Glasgow Botanic Garden in 1830. Purple petunia, Petunia violacea. Handcoloured engraving from Joseph Paxtons Magazine of Botany, and Register of Flowering Plants, Volume 1, Orr and Smith, London, 1834.