Echinopsis tegeleriana

Echinopsis tegeleriana, synonyms including Lobivia tegeleriana, is a species of Echinopsis found in Peru.^[3]

Echinopsis tegeleriana grows singly or sometimes forms small groups. The spherical, green shoots reach a diameter of up to 9 centimeters. They form a large taproot. There are around 16 clearly skewed ribs, which are divided into hatchet-shaped cusps. The areoles on them are elongated and are up to 1.7 centimeters apart. Ten to twelve horn-colored, slightly curved thorns emerge from them, have a darker tip and are 1 in 2 centimeters long. The longest spine is occasionally hooked.

The red to orange or yellow flowers have a more or less pink-orange throat and appear on the sides of the shoots. They are up to 4 centimeters long. The flower tube is short in relation to the flower bracts. The spherical, green fruits are thin-skinned and juicy. They usually become thorny as they mature and reach a diameter of up to 2.5 centimeters.^[4]

The first description by Curt Backeberg as Lobivia tegeleriana was published in 1936. It was transferred to the genus Echinopsis in 1987.^[2] The specific epithet tegeleriana honors the Hamburg government councillor Wilhelm Tegeler.

Echinopsis tegeleriana is widespread in the Peruvian regions of Lima, Junín, Huancavelica and Ayacucho at altitudes above 3000 meters.