Rebutia (Aylostera) robustispina was first published in the Dutch journal Succulenta 56(3): p.p. 64-5 by Friedrich Ritter in 1977. The

Rebutia (Aylostera) pulchella was first described by Walter Rausch in Kakteen und andere Sukkulenten 23(12): p. 340, the journal of

Aylostera (Rebutia) pseudodeminuta was first described by Curt Backeberg in Der Kakteenfreund, Vol 2(1), p. 7, in 1933. I have

Rebutia (Aylostera) perplexa was first described by J. D. Donald in Ashingtonia 3(5 & 6): p.p. 150-2 in 1980. The

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

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

Rebutia (Aylostera) nitida was first described by Friedrich Ritter in Ashingtonia 3(1), p. 14, in 1978. The description is rather

Aylostera narvaecensis was first published, as Aylostera narvaecense, by M. Cárdenas in Cactus & Succulent Journal (US), 43(6): p.p. 245-7,

Aylostera mandingaensis was first described by R. Wahl and H. Jucker in Kakteen und andere Sukkulenten 24(7): p.p. 99 –

Rebutia (Aylostera) kupperiana was first described by F. Bödeker (also spelled Boedeker) in Monatsschrift der Deutsche Kakteen Gesellschaft 4(12): pp.