Astrocaryum jauari Mart.

A spiny palm. It mostly forms clusters but can occur singly. They are 5-13 m tall. The stems are 9-30 cm across. There are 6-15 leaves. They are stiffly erect. They are 4-5 m long. There are 56-148 leaflets on each side. They are arranged irregularly in clusters. They spread in different planes. The flowering stalks are erect and among the leaves. The male and female flowers are separate on the same plant. There are 3-5 female flowers at the base. The fruit are round to oval and 2.5-3.5 cm long by 1.7-2.5 cm across.

Flooded river margins and floodplains of the Amazonian rainforest, where the land can be submerged for up to 300 days per year. It often forms large colonies.

The kernel is a source of edible oil. The fruit endosperm is eaten. The fruit have been used to make flour.

Can be grown by seedlings.