Austrocactus

A variable cactus of southern Patagonia with short, heavily spined stems and pink or purplish-pink flowers. It occupies plains extending between the Atlantic coast and the Andean foothills.

An upright cactus of Patagonian plains and river valleys. The mature stem can become club-shaped or columnar, and the flower has a cream-coloured perianth base and pink tips. In older accounts, it also appears as Austrocactus patagonicus.

A branching cactus of southern Argentina. Current POWO includes three subspecies differing in stigma and fruit structure. The pink-flowered subspecies longicarpus is treated as a separate species in the 2025 genomic revision.

A strongly spined cactus from rocky slopes of northern Neuquén. Older plants form clumps, and their yellow to orange flowers have a pale stigma. The species was described in the 2025 revision.

A branching cactus from Pampa del Diamante in Mendoza Province. Short green stems bear distinctly hairy central spines, and the flower combines a pale perianth base with pink or red tips.

A small cactus from the volcanic substrate around Tromen in Neuquén. Its spherical to elongated stem is combined with broad, felted areoles and a flower with a yellow base and often apricot-coloured tepal tips.

A small cactus forming low clumps in rock fissures and gravel beds of the Sierra del Tontal. Bell-shaped flowers have a pale yellow interior becoming pink near the tepal tips and a dark purple stigma.

A branching Andean cactus with creeping stems, golden to copper-orange flowers and succulent fruits. Its two subspecies differ in stem size and the numbers of spines and stigma lobes.

A cactus of rocky areas in central Patagonia, with stout stems and long, pale spines. Its different positions in two genomic analyses indicate a complex history of relationships with Austrocactus bertinii and Austrocactus aonikenkensis.

A strongly spined cactus from the plateau north of Ingeniero Jacobacci in Río Negro. Adult plants can form extensive clumps, and their large flowers have a dark purple stigma and a cream-yellow perianth base.

A branching cactus of western Chubut and the far north of Santa Cruz. Its flower usually has a red stigma, and its fruit is densely covered with wool and brown bristles. The 2025 genomic revision named this variable group of plants.

A very small cactus from volcanic rocks east of Domuyo. Mainly short, almost spherical stem portions are visible above the ground, while a flower can be larger than a single stem.

A cactus of Andean valleys in Mendoza with a usually solitary, upright stem. A yellowish perianth with a reddish tint surrounds a purple stigma. Plants damaged by cattle can branch differently from cultivated specimens.

A small, usually solitary cactus from fissures in volcanic rocks at the edge of La Payunia. Dark stems with hooked central spines produce pastel-yellow to pale pink flowers with a purple stigma.

An Andean cactus of central Chile with a strong tuberous root and rhizomes. Its slender stems have smooth ribs, flowers also arise from older lower areoles, and ripe fruits are yellow and mucilaginous.

A spreading Andean cactus from the Malargüe department in Mendoza. Its flowers are mainly yellow with a paler stigma, and limestone rocks are prominent among its sites. The revision links the species to Austrocactus decorus and Austrocactus hibernus.