Caryocar villosum Piquia
The edible mesocarp of the fruit of Caryocar villosum is commercially known as "butter", or "manteiga de piquia" (1). The fruits can be peeled and boiled with some salt and have a nutty, oily flavour (2). Saponin compounds in the fruit could potentially have pesticidal and antitumoral effects (3). The leaves and bark are reported to induce sweating (4).
(1) Parrotta, JA (1995) Trees of the Tapajós; A photographic field guide. USDA Forest Service. 370 p.
(2) Local guides at Amazonat, personal communication
(3) Alabdul Magid A, Voutquenne L, Harakat D, Pouny I, Caron C, Moretti C, Lavaud C. (2006) Triterpenoid saponins from the fruits of Caryocar villosum. J Nat Prod 69(6): 919-26
(4) Mors, WB, Rizzini, CT and Pereira, NA (2000) Medicinal Plants of Brazil. Reference Publications Inc: 501 p.