Lobivia caineana

Lobivia caineana is a species of Lobivia found in Bolivia.

Description
Lobivia caineana grows singly. The ellipsoidal, fresh green shoots reach heights of 10 to 29 centimeters with diameters of 7 to 9 centimeters. The shoot apex is sunk. There are nine ribs, which are clear on the upper parts of the shoots, but flat and blunt further down. The elliptical areoles on it are cream-colored to gray and are up to 2.5 centimeters apart. From them arise 14 to 18 gray to whitish, aquiline thorns that are darkly tipped. Some of the unequal thorns are spreading and others are protruding. The thorns are 1.5 to 7 centimeters long.

The funnel-shaped, deep purple-pink to pink or magenta, occasionally white flowers appear on the tips of the shoots and open during the day. They are 5 to 7 centimeters long and have a diameter of 4 to 6 centimeters. The egg-shaped fruits are almost dry and up to 2 centimeters long.

Distribution
Lobivia caineana is widespread in the Bolivian department of Potosí in the province of Charcas at medium altitudes of around 2000 meters.

Taxonomy
The first description by Martín Cárdenas was published in 1952. The specific epithet caineana refers to the occurrence of the species in the valley of the Río Caine. A nomenclature synonym is Echinopsis caineana (Cárdenas) D.R.Hunt (1991).