Trichocereus tunariensis

Leucostele tunariensis exhibits a columnar growth pattern, branching from the base and attaining heights between 2 and 3 meters. The green shoots are club-shaped to cylindrical, with a diameter of up to 12 centimeters and 16 to 21 sharp-edged ribs. Gray oval areoles, spaced about 1 centimeter apart, decorate these ribs, each bearing approximately 17 spines ranging from 0.5 to 6 centimeters. Notably, these spines lack differentiation into central and peripheral categories, with some pointing downwards. The plant produces funnel-shaped, pink to red flowers near the shoot tips that bloom at night. These flowers measure 15 to 17 centimeters in length and have a diameter ranging from 12 to 15 centimeters. Another distinctive feature is the spherical, green fruits, with a diameter of 5 centimeters and a length of up to 4 centimeters.

Leucostele tunariensis is native to the Cochabamba department in Bolivia, specifically in the Cercado province on Cerro Tunari at elevations between 3000 and 3800 meters.