Butia lallemantii is a species of palm described in 2006. Unlike more familiar Butia species, this is a clustering, acaulescent species lacking an above-ground trunk. It was the third of such species of Butia described. It is caespitose; branching underground with normally 3-6 branches. It grows to 60–160 cm tall, with 5-12 leaves with 24-40 leaflets a side. The fruit are edible, ovate-lanceolate, yellow-orange, 2.5-3.5 x 1.6-2.5 cm, with a reddish apex.