Aylostera jujuyana (Rausch) Mosti & Papini

Regarded by some as a form of Aylostera fiebrigii. Clearly closely related to that species with a similar spherical body shape, fairly dense spines and orange flowers with white centres and pinkish outer petals. Distinguished by its white or yellowish areoles and long yellowish spines with brown tips.

The description is here.

Plants of this species in the collection include:

Aylostera jujuyana RH572

Aylostera jujuyana WR220

Aylostera jujuyana WR780