Rebutia (Digitorebutia) brunescens was first described by Walter Rausch in Kakteen und andere Sukkulenten 23(9): pp. 235 – 236, the journal of the Deutsche Kakteen-Gesellschaft, in 1972.

The description is reproduced here in the original Latin, together with my own translation in English. You should look up the original for more details, including notes in German and photographs.

Rebutia (Digitorebutia) brunescens Rausch spec.nov.

Von W. Rausch

Simplex, globosa ad 50 mm diametiens, circum areolas solum paulum atroviridis, aliter fusco-violacea; costis 13-14, rectis vel subtortis, sulcis transversis in gibberes 5 mm latos ac longos rotundos divisis; areolis ovalibus, 2-3 mm longis, fusco-tomentosis; aculeis marginalibus 11—13, 5-6 paribus et uno deorsum, directo, rectis, radiantibus circum corpus contextis; aculeis centralibus 0-2, ad 10 mm longis, validioribus; aculeis omnibus fuscis, acumine et basi incrassata obscurioribus. Floribus lateralibus, 40 mm longis et 30 mm diametientibus; ovario et receptaculo albido-roseo, squamis viridibus ad fuscis, tomento et setis albis tecto; phyllis perigonii exterioribus roseis medio-viridi-striatis; phyllis perigonii interioribus rubris; fauce albida , filamentis albido- roseis, stylo 8 mm connato, viridulo – albo , stigmatibus 7, flavis. Fructu globoso, fusco squamis obscurioribus et to- mento et setis albis tecto. Seminibus campanulatis, sub- elongatis, 2,5 mm longis et 1,5 mm latis, testa aspera, grandeverrucosa, hilo magno basali, micropyle valde eminente.

Patria: Bolivia apud Tarabuco, 3.500 m alt.

Typus Rausch 480 in Herbario W.

English translation