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monster flower

plant species, Rafflesia arnoldii
Also known as: Rafflesia arnoldii, corpse flower

Quick Summary

The Rafflesia arnoldii, often called the monster flower or corpse flower, is a parasitic plant native to Southeast Asia. It is known for producing the largest single flower in the world, which can weigh up to 11 kg (24 pounds) and measure nearly a meter across.1

This plant lives within the tissues of Tetrastigma vines, with its presence only revealed when its large, reddish-brown, five-lobed flower emerges. The flower emits a strong odor of rotting flesh to attract carrion-feeding flies, its primary pollinators. Individual flowers are unisexual, requiring another blooming flower of the opposite sex nearby for pollination to occur.1

The Rafflesia arnoldii is critically endangered due to habitat loss and is extremely difficult to cultivate, making its survival precarious. It's important to distinguish it from the unrelated titan arum (Amorphophallus titanum), which also has a large, foul-smelling inflorescence.123

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3 Britannica Sources
  1. rafflesia
  2. Rafflesiaceae
  3. corpse flower

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