There are at least three different plants in circulation with the number WR493. Discovered by Walter Rausch in Tarija, Bolivia

Note that there are various orange and red-flowered plants being sold by nurseries and seed merchants, some with KK numbers,

The original description is here.

A hybrid between Aylostera deminuta (grandiflora) and Aylostera aureiflora WR158.

Not yet named. Collected by Erich Haugg in Bolivia. May be a form of A. steinmannii.

Not yet named. Collected by Ladislav Horáček at Questa da Sama, Tarija, Bolivia.

Provisional name. May be a form of A. diersiana with more gold / orangey yellow flowers, with purple tips to