Aylostera torquata (F. Ritter & Buining) Mosti & Papini

A very attractively-stemmed plant, the short spines along very well defined ribs, often spiralling around, with clear space between each rib. Regarded by some as a form of Aylostera diersiana. Flowers are typically a hot orange or reddish rather than the usual cool yellow of A. diersiana.

The description is here.

Plants of this species in the collection include:

Aylostera torquata

Aylostera torquata FR1117

Aylostera torquata RH324/01