A human sacrifice to a carnivorous tree, as described in the South Australian Register, 1881:

The slender delicate palpi, with the fury of starved serpents, quivered a moment over her head, then as if instinct with demoniac intelligence fastened upon her in sudden coils round and round her neck and arms; then while her awful screams and yet more awful laughter rose wildly to be instantly strangled down again into a gurgling moan, the tendrils one after another, like great green serpents, with brutal energy and infernal rapidity, rose, retracted themselves, and wrapped her about in fold after fold, ever tightening with cruel swiftness and savage tenacity of anacondas fastening upon their prey.

Unfortunately, years of subsequent investigation — including the enchantingly titled Madagascar, Land of the Man-Eating Tree (1924) — have failed to find such a tree, or even the Mkodo tribe that purportedly feeds it. Nice try, though.