A lot of confusion exists around this often white or pale pink flowered species, with misapplied field collection numbers and

Rebutia (Aylostera) einsteinii was first described by A. V. Frič, in Möllers Deutsche Gärtner Zeitung, 63: 23, p. 267, in

One of the southernmost species, and quite variable over its range, becoming like A. aureiflora in places, to which it

Aylostera (Rebutia (Digitorebutia)) diersiana was first described by Walter Rausch in Kakteen und andere Sukkulenten 26(2): 25, 1975, the journal

Regarded by some as yet another form of Aylostera pygmaea. Although the ranges of A. pygmaea and A. diersiana overlap,

The original description of Lobivia (Aylostera) haagei var. crassa (crassa) was published in Lobivia 85 (1987), p. 140, by Walter

The fat-bodied one (that’s what the name means). Regarded by many as a form of Aylostera haagei, indeed originally described

Aylostera (Rebutia (Digitorebutia)) cincinnata was first described by Walter Rausch in Kakteen und andere Sukkulenten 27(1): 4, 1976, the journal

Regarded by many as a form of Aylostera steinmannii. Found to be distinct enough to be given specific status by

Aylostera (Rebutia (Digitorebutia)) christinae was first described by Walter Rausch in Kakteen und andere Sukkulenten 26(7): 145, 1975, the journal

Regarded by many as a form of Aylostera steinmannii. Found to be distinct enough to be given specific status by

Rebutia (Aylostera) friedrichiana was originally described in Succulenta 55(6), p.103, by Walter Rausch in 1976. Here is the text of