This is a solitary-trunked palm, the trunk being , exceptionally , tall, with a diameter of . The trunk is covered with the persistent bases of the old palm fronds. These fronds are 9–32 in number and arranged in a spiral around the trunk. The blade is by . The petiole is
glabrous (hairless), in length and wide, flat on top and round elsewhere. The margins of the petioles are densely toothed with numerous, robust, up to long spines, and many flattened fibres when the leaves are young. The rachis of the leaf is in length, with 48-62 pairs of pinnae (leaflets) which are
glaucous-coloured and arranged uniformly along the rachis. Unlike other species of
Butia (except
B. odorata), these are usually in the same plane, but sometimes inserted at very slightly divergent angels along the rachis, but without giving the leaf a plumose aspect such as in
Syagrus, and with each pair of pinnae forming a neat V-shape. The pinnae in the middle of the leaf blade are long and in width. The inflorescence is branched to the 1st degree, has a
peduncle long and wide, and has a
prophyll long, wide, and covered in a brown
tomentum. The young inflorescence develops in a
glabrous, lightly striated, woody spathe which is in length and has an enlarged portion at the end which is long wide and ending in a short, sharply pointed tip. The axis (width?) of the inflorescence is long. The rachis of the inflorescence is long and has 35-135 rachillae (branches) which are long. The flowers can be coloured yellow, greenish-yellow, yellow and violet, or completely violet. The staminate (male) flowers are in length; the pistillate (female) flowers are . The shapes of both the fruit and nut are ovoid. The ripe fruit are coloured yellow, orange, or red. The fruit are long, wide, have a persistent
perianth, and have a yellow, juicy, lightly fibrous flesh. The nut is hard, long, wide, dark-brown coloured, contains a homogeneous
endosperm, and has 1 to 2, rarely 3, seeds within. The nut is without a beak or other sort protuberance on its apex.
Similar species It is very similar to
Butia odorata, a palm with a similar habitat but further south along the coast, but may be distinguished from this species by its much smaller height, almost always to just . ==Distribution==