Which plant has the biggest seed in the plant kingdom?

The nut of the coco de mer, also called giant fan palm, double coconut, Seychelles nut, or Maldive coconut, is considered to be the biggest nut in the entire plant kingdom. It is the size of a coconut, and weighs around 27 kg. The palm is found only in the islands of Praslin and Curieuse of Seychelles in the Indian Ocean, and its botanical name is Lodoicea Maldivica. It is a rare species. The nuts were well-known as they were always floating in the sea around Seychelles, but their source was discovered only in 1768.