Oils in the titan arum plant are volatilized to release its unique scent by raising the internal temperature.

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"To produce its perfume, the plant [titan arum] raises its internal temperature several degrees above that of its surroundings and vaporises oils secreted in its heart." (Attenborough 1995:140)

The Private Life of PlantsAugust 21, 1995
David Attenborough

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Titan ArumAmorphophallus titanumSpecies

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