Bertholletia excelsa.

Botanical name: 

Bertholletia excelsa Humb. & Bonpl. Myrtaceae. Amazon Nut. Almonds of the Amazon. Brazil Nut. Butternut. Creamnut. Para Nut. Niggertoe.

Brazil. This is one of the most majestic trees of Guiana, Venezuela and Brazil. It furnishes the triangular nuts of commerce everywhere used as a food. It was first described in 1808. An oil is expressed from the kernels and the bark is used in caulking ships.

Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.