Chelidonium majus
English: Greater celandine; Tetterwort.
Dutch: Zwaluwkruid.
Botany: juice, latex is yellow like bile.
Content: thallium, thorium, chromium, aluminium, cerium, praseodymium, neodymium, lanthanum, samarium, gallium.
Culture: Charon, the ferryman over the Styx.