Rebutia (Aylostera) jujuyana was first described by W. Rausch in Kakteen und andere Sukkulenten 24(7): p.p. 147-8, the journal of the Deutsche Kakteen-Gesellschaft, in 1973.

The description is reproduced here in the original Latin as published, together with my own translation in English. You should look up the original for extensive further notes in German plus a colour photograph.

Rebutia (Aylostera) jujuyana RAUSCH spec.nov.

Walter Rausch

Simplex, globosa, ad 35 mm diametiens, laete-viridis; costis ad 18, spiraliter tortis, in mamillas 3 mm latas divisis; areolis rotundis, 2 mm diametientibus, albo – ad flavo -tomentosis, 3-4 mm inter se distantibus; aculeis marginalibus ca. 18-20, radiantibus, setosis, ad 10 mm longis, flavidis; aculeis centralibus 5-7, ad 15 mm longis, acicularibus, fragilibus, flavis, paulum fusco-acuminatis. Floribus 35 mm longis et 35 mm diametientibus; ovario globoso, 4 mm diametiente, viridi, squamis viridibus et paucis pilis et setis albis tecto; receptaculo gracillimo, roseo, squamis viridibus tecto; phyllis perigonii exterioribus rotundis, violaceo-roseis, aurantiaco-marginatis; phyllis perigonii interioribus spathulaterotundis, aurantiacis; fauce 5 mm tantum aperta, infundibuliformi, alba ; stylo 13 mm libero et ca. 15 mm cum receptaculo connato, stigmatibus 8, albis. Fructu bulbiformi, 4-5 mm diametiente, atrovirente, squamis laete-viridibus, pilis et setis flavidis tecto. Seminibus Aylosterae typo.

Patria: Argentina, in Provincia Jujuy communis.

Typus Rausch 220 in Herbario W.

English translation

Rebutia (Aylostera) jujuyana RAUSCH spec.nov.

Walter Rausch

Single-bodied, spherical, up to 35mm in diameter, bright green; up to 18 ribs, twisting spirally, divided into tubercles 3mm wide; areoles round, 2mm in diameter, with white or yellow hair, 3 – 4mm apart; ca. 18 – 20 marginal spines, spreading, bristly, up to 10mm long, yellowish; 5 – 7 central spines, up to 15mm long, fine, needle-like, yellow with tips a little darker. Flowers 35mm long and 35mm in diameter; ovary spherical, 4mm in diameter, green, with greenish scales and covered in white hairs and bristles; tube slender, pink, with greenish scales; outer petals rounded, violet-pink, with orange edges; inner petals spathulate, orange; throat 5mm when fully opened, trumpet-shaped, white; style with 13mm free and 15mm fused with the tube, with 8 white stigmas. Fruit bulb-shaped, 4 – 5mm in diameter, dark green, with bright greenish scales and yellowish hairs and bristles. Seed typical of Aylostera.

Habitat: Jujuy Province, Argentina.

Collection number (Type): Rausch 220, deposited in Herbarium W (Herbarium of the Natural History Museum of Vienna).