Aylostera sumayana (Rausch) Mosti & Papini
Regarded by some as a form of Aylostera spegazziniana. A relatively recent discovery, having been first described in 1986. Sometimes this species is confused with Aylostera supthutiana, both having similar body shape, spination and red flowers, but A. sumayana has yellowish or white stamens and mid-green coloured bodies, while A. supthutiana has red or dark pink stamens and dark green or brown bodies.
Spine length is variable, with some plants having very short spines, others longer, fine and bristly.
The description is here.
Plants of this species in the collection include:
Aylostera sumayana EH7093
Aylostera sumayana HJ1242
Aylostera sumayana JK461
Aylostera sumayana RH2088a
Aylostera sumayana RH2095a
Aylostera sumayana RH3184