Type locality: A cuatro horas a mula oeste de Huacalera, Tilcara (Jujuy, Argentina)
Stems: Cylindrical, dark brownish-green coloured, but green in the new growth, and only about as thick as a pencil (1-1,2 cm in diameter). It would appear that in cultivation these plants grow larger, elongate and cluster more vigorously than in habitat.
Root: Thick, fleshy taproot.
Areoles: Thin, elogate, brown felted.
Spines: Tiny, pectinated less than 1 mm long.
Flowers: Large yellow, with a tinge of orange or brownish-yellow, from near stems bases.
Blooming Season: Blooms profusely in spring.
The roots can break during repotting, and it is best to leave the compost dry for a while after repotting, to avoid rot. Repotting will increase the number and size of stems, and will increase the number of flowers produced. Repot yearly until reaching about 3 cm in size, then every two or three years will suffice. Repotting is best done at the end of winter, but can be done at other times, too. All plants, especially the young ones, are susceptible to red spider mites.
Propagation: By seeds or offsets (If available). The stems of larger grafted specimens can be rooted, but grow quite slowly. It makes sense to keep some stock plants for future propagation, or to replace the eventaul plant that rots or dies