Maihueniopsis glomerata

Overview

Maihueniopsis glomerata is a remarkable, high-altitude succulent subshrub belonging to the Cactaceae family ¹. Native to the harsh Andean highlands, it has adapted to survive extreme cold, intense solar radiation, and severe drought by forming dense, low-growing mounds or cushions composed of tightly packed, globose segments.

Taxonomy and Naming

Originally described by Haworth in the 1830s as Opuntia glomerata, the species was later reassigned to the genus Maihueniopsis based on its distinct seed morphology and growth habit ². The specific epithet "glomerata" refers to the clustered, rounded form of its jointed stems. Common synonyms include Tephrocactus glomeratus.

Distribution and Habitat

This species is native to the high-elevation Andean slopes of northwestern Argentina and northern Chile ¹. It thrives in the puna biome at altitudes ranging from 2,000 to over 4,000 meters above sea level, growing in rocky, gravelly soils where few other plants can survive.

Appearance

The plant consists of small, egg-shaped to cylindrical segments, about 2 to 5 cm long, which stack on top of each other. The spines are distinctive: they are often flattened, papery, or flexible, providing shade to the plant body. In summer, it produces attractive yellow or cream-colored, bell-shaped flowers at the branch tips.

Cultivation and Care

Maihueniopsis glomerata is a cold-hardy cactus suitable for rock gardens or alpine greenhouses ². It requires absolute full sun and excellent air circulation. The potting medium must be predominantly mineral with almost no organic matter. Water sparingly in summer and keep dry in winter.

Common Mistakes

Overwatering, especially during winter dormancy, is the most frequent cause of loss, leading to root rot. Insufficient sunlight will cause the stems to stretch and weaken (etiolation), ruining its dense cushion form.