Only recently described in 2005, and regarded by many as a form of Aylostera yuquinensis, A. pygmaea, A. haagei, A.

Aylostera pygmaea was first described (as Echinopsis pygmœa) by Robert E. Fries in Nova Acta Regiae Societatis Scientiarum Upsaliensis, Ser

Aylostera pygmaea was one of the first of the Mediolobivias to be described, in 1905; the name refers to it

Aylostera pseudoritteri was first described (as Lobivia atrovirens var. pseudoritteri) by Walter Rausch in Lobivia 85, pp. 13 & 137,

Regarded by some as a form of Aylostera atrovirens or of A. pygmaea; indeed, originally described as such by Rausch.

Aylostera polypetala was first described (as Lobivia pygmaea var. polypetala) by Walter Rausch in Lobivia 85, pp. 116 & 144,

Regarded by many as a form of Aylostera pygmaea. Chiefly distinguished by its “double” flowers, i.e. more orange-red petals than

Aylostera pelzliana was first described (as Lobivia haagei var. pelzliana) by Walter Rausch in Lobivia 85, pp. 57 & 140,

Regarded by some as a form of Aylostera eos, A. haagei or A. pygmaea. A lot of confusion exists in

Lobivia (Aylostera) steinmannii var. parvula (parvula) was first described by Walter Rausch in Lobivia 85, pp. 125 & 146, in

Regarded by many as a form of Aylostera steinmannii, indeed originally described as such. Stated as being similar to A.

Rebutia (Aylostera) pallida was first described by Walter Rausch in Succulenta 56(10) p. 234, with a colour photograph on p.