Rebutia (Aylostera) cintiensis was first described by Friedrich Ritter in Ashingtonia vol. 2: 10, p. 206, the journal of the Ashington Botanical Trust, in 1977.

Here is the text in Latin as published, together with Ritter’s own English translation, but you should look up the original for further notes and a black-and-white photograph.

Note that the flower colour described is defined as colour no. 6, a fiery orange-red, as given in E. Biesalski’s & R. Maatsch’s 1957 publication “Pflanzenfarbenatlas für Gartenbau, Landwirtschaft und Forstwesen, mit Farbzeichen nach DIN 6164” (plant colour atlas), published by Göttingen Musterschmidt.

REBUTIA cintiensis Ritter, spec. nov.

Globosa, viridis, 4-5cm crassa; costae ca. 18, dissolutae tuberculis 5mm altis; areolae 2-2.5mm diam., albolanatae, 3-4mm inter se remotae; spinae marginales 12-15, tenues albae, 5-7mm longae, lateraliter directae, centrales 4-8, rufae, multum robustiores, valde divaricatae; flores 35mm longi; ovarium albilanatum et albisetaceum; stylus 10-12mm cum tubo connatus; sulcus nectarifer 1mm longus; tubus floralis 4mm longus; filamenta alba, biseriata; stylus albus stigmatibus albis; petala 18mm longa, 5-7mm lata, oblonga, ignea (colore 6); semina atra, 1.2mm longa, teruiter tuberculata; habitat Camargo ad septentriones versus, Prov. Nor-Cinti, Bolivia. Collected under FR. 938.

Globular, green, 4-5cm wide; ribs about 18, broken into tubercles 5mm high; areoles 2-2.5mm diameter, white, woolly, 3-4mm apart; radial spines 12-15, thin white, 5-7mm long, directed sideways, centrals 4-8, red, more robust, very spreading; flowers 35mm long; ovary with white wool and white hairs; style 10-12mm with inclined tube; nectary groove 1mm long; flower tube 4mm long; filaments white, in two series; style white, with white stigma lobes; petals 18mm long, 5-7mm wide, oblong, fiery (colour 6); seeds black, 1.2mm long, finely tuberculate; habitat Camargo to the north of Province Nor-Cinti, Bolivia. Collected under FR.938.