The single, horizontally protruding central spine is 1.5 to 2 cm (0.59 to 0.79 in) long.

The narrow, funnel-shaped, long tubular, white flowers open at night.

The spherical to ellipsoidal, dark green fruits tear open.

[3] Echinopsis calochlora is distributed in the Bolivian department of Santa Cruz in the lowlands around 600 meters.

The specific epithet calochlora is derived from the Greek words kalos for 'beautiful' and chloros for 'green' referring to the plant's shiny green epidermis.