Astrocaryum macrocarpum Huber Astrocaryum aculeatum (known in Brazilian Portuguese as tucumã, acaiúra, acuiuru, coco-tucumã, tucum, tucumã-açu, tucumã-macaw, tucum-açu, tucumaí-da-terra-firme, tucumãí-uaçu, tucumã-piririca, tucumã-purupuru or tucumã-do-mato[citation needed]) is a palm native to tropical South America and Trinidad.

[2] Astrocaryum aculeatum was first described by German botanist Georg Friedrich Wilhelm Meyer in 1818 based on a specimen from the Essequibo River in Guyana.

[3] Astrocaryum aculeatum is found in and around the Amazon Basin, from Trinidad and Tobago in the north, through Venezuela, Guyana, Suriname, the Brazilian states of Acre, Amazonas, Pará, Rondônia, Roraima and south through the Bolivian departments of Beni, Pando, Santa Cruz.

A fiber is extracted from the leaves for making hammocks and ropes that resist salt water.

[2] The fruit of tucumã is composed of a woody core almost black in color, containing the white paste of the seed (colloquially called an almond in Brazil) and covered with a yellow-orange pulp.

[7] [8][full citation needed] The tucuma pulp oil could in the future be used to manufacture soap, body lotions or hair care products.