Regarded by some as a form of Aylostera muscula. A very distinctive and attractive plant, with long, dense, white, hair-like, soft spines, and intense orange-red or red flowers. A. muscula has much shorter spines and a lighter orange (rather than orange-red) flowers. Both species grow in the same localities in Bolivia. Found to be distinct enough to maintain specific status by Mosti & Papini (2011).
The description is here.
Plants of this species in the collection include: