Cleistocactus luribayensis grows tree-shaped with several upright, gray-green shoots that taper towards the tip and reaches heights of 2 to 3 meters with diameters of 4 to 6 centimeters.

Of the 16 to 22 needle-like, light brown to whitish, spreading and 5 to 15 millimeter long spines, three are occasionally arranged in the middle.

The inner flower bracts are salmon pink in color.

[1] Cleistocactus luribayensis is widespread in the Bolivian department of La Paz, specifically in the provinces of Murillo and Loayza at altitudes of 2600 to 3600 meters.

The specific epithet luribayensis refers to the occurrence of the species in the Luribay valley in the Bolivian province of Loayza.