Rebutia (Aylostera) fusca was first described by Friedrich Ritter in Kakteen und andere Sukkulenten 28(4): p. 78, the journal of

Rebutia (Aylostera) fulviseta was first described by Walter Rausch in Kakteen und andere Sukkulenten 21(2): p. 29, the journal of

Rebutia (Aylostera) flavistyla was first published by Friedrich Ritter in Ashingtonia vol. 3(1): p.12, in 1978, though a photograph of

Aylostera fiebrigii was first described, as Echinocactus Fiebrigii [sic], by M. Gürke in Notizblätter des Botanischen Gartens und Museums zu

Aylostera deminuta was first described, as Echinopsis deminuta, by Frédéric Albert Constantin, and published posthumously by Roland-Gosselin (ed.) in “Oeuvres

Rebutia (Aylostera) cintiensis was first described by Friedrich Ritter in Ashingtonia vol. 2: 10, p. 206, the journal of the

Rebutia (Aylostera) cajasensis was first published in the Dutch journal Succulenta 56(3): p. 64 by Friedrich Ritter in 1977. The

Rebutia (Aylostera) buiningiana was first described by Walter Rausch in Kakteen und andere Sukkulenten 23(9): pp. 98 – 99, the