What are the worlds largest seeds?
http://www.rarepalmseeds.com/LodMal.shtml The Lodoicea maldivica… a kind of palm has the largest of all seeds. Twice as big as a coconut “seed”… also called the “double coconut”.
According to C.R. Gunn (World Guide To Tropical Drift Seeds and Fruits, 1976), the record for the largest seed embryo goes to Mora oleifera (Fabaceae), a large tree that grows in tidal marshlands and estuaries along the Pacific coast of tropical America. In Costa Rica, this tree often forms nearly pure stands just behind the mangrove swamps. Seeds of M. oleifera may be up to 7 inches (18 cm) long and up to 5 inches (8 cm) wide. Another species (M. excelsa) has slightly smaller seeds. Like other exalbuminous legume seeds, the two cotyledons comprise most of the seed. Since the cotyledons are part of the embryo, this species is certainly a strong contender for the record of world’s largest seed. The seeds float in ocean current with their two large cotyledons connected or separate. Dried cotyledons washed up on beaches superficially resemble the shells of a bivalve mollusk. Sources:
