Found by Ralf Hillmann at Mal Paso, Bolivia at an altitude of 3950m.

Also found listed as A. suquistacensis, A. suquistaensis. Found by Erich Haugg. I have not yet been able to locate

Found by Erwin Herzog at Companario, Curqui, Bolivia.

Originally named Rebutia einsteinii var. euanthema, which is now regarded as A. oculata. Found at Volcán, Jujuy in Argentina at

This rather sprawling plant with brick-red flowers was found by Karel Kníže at Ballestro, Potosi, Bolivia, but subsequently similar plants

Sometimes listed as A. mairiana or A. mairana or A. mairanensis, this large-bodied plant was found at Mairana, Santa Cruz,