Rebutia (Aylostera) froehlichiana was first described in Succulenta, 54:12, pp. 225-226, in 1975 by Walter Rausch.

Here is the text of the description in the original Latin, with an English translation below. You should look up the original description for more details and photographs.

Rebutia (Aylostera) fröhlichiana Rausch spec. nov.

Simplex globosa, ad 25mm dlametiens, vlridls; costis 13-14, recte adscendentibus vel palum tortis, in gibberes 3mm longos et latos, rotundos, verrucosos divisis: areolis ovalibus, ad 2mm longis, albo-tomentosis; aculeis marginalibus ca.11, ad 5mm longis, circa corpus contextis, setosis vitreo-albis ad flavldis fusco-acuminatis et basi incrassata fuscls; aculeis centrallbus 1-2, ad 5 mm longis, fuscis ad nigris, validionbus et partim subarcuatis.

Floribus lateralibus, 30m.longis et 25mm diametientibus; ovario et receptaculo roseo, squamis fuscis, pilis et setis albis tecto; phyllis perigonii exterioribus lanceolatis, violaceo-roseis, medio-clare-fusco-striatis; phyllis perigonii intenoribus spathulatis ad .acutls, aurantiacis; fauce I5mm longa, 5mm eius cum stylo connata, rosea; filamentis flavidis, basi violaceo-rosidis, stylo et stigmatibus (4) viridibus.

Fructu globoso, 3mmI dlametiente, pilis et setis albis tecto.

Seminibus globose-mitraeformibus, 1mm diametientibus, nigris, tunica arillosa reliqua paululum tectis, hilo magno basali.

Patria: Bolivia, Cinti meridionalis apud Yuquina. 3.200m alt.

Typus: Rausch 649 in Herbario Städt. Sukkulentensammlung Zürich.

English translation

Rebutia (Aylostera) froehlichiana Rausch spec. nov.

Unbranched. spherical, up to 25 mm diameter; ribs 13-14, straight or slightly twisted, divided, into 3 mm long and wide, round wart-like tubercles; areoles oval, up to 2 mm long. with white felt; radial spines ca 11, up to 5 mm long, braided around the plant body, bristly, glassy white to yellowish with brown tip and thickened brown base; central spines 1-2, up to 5 mm long, dark approaching black, slightly stronger and partly slightly curved.

Flowers appearing on the side, 30 mm long and 25 mm in diameter; ovary and flower tube pink with dark brown scales, white hair and bristles; outer petals lanceolate, violet-pink with light brown centre stripe; inner petals spatulate to pointed, orange-red; throat 15 mm long, of which 5 mm attached with the pistil; stamens yellowish with violet-pink base; pistil and stigmas (4) green.

Fruit spherical, 3 mm diameter, with white hair and bristles.

Seeds spherical, cap-shaped, 1 mm diameter, black, covered with few wrinkles and with a large, basal navel.

Found: Bolivia, South Cinti, at Yuquina at 3200 m.

Type Rausch 649 in the herbarium of the Städt. Sukkulentensammlung Zurich.