Aylostera rovidana (Mosti & Papini) Mosti & Papini

A distinctive, comparatively large plant with long, dense spines and white or pale pink to orangy-pink flowers only recently described, in 2005. Regarded by some as yet another form of Aylostera pygmaea or A. haagei.

The original description is here.

Plants of this species in the collection include:

Aylostera rovidana WR333b