Solitarium, griseoviride, 4-12 cm crassum, radice rapacea; costae 8-15, 15-30 mm latae, 4-7 mm altae, tuberculis carentibus vel humilibus; areolae grisae , 6-10 mm diam., 5-10 mm inter se remotae; spinae robustissimae, patulae, brunneae vel pullae, marginales 3-6, curvatae, 4-7 mm longae, centrales 1(-2) vel deficientes; flores in vertice, 3-4 cm longi; ovarium 3,5-6 mm longum, 6-9 mm crassum, squamis obtusis brevibus instructum; camara nectarifera 1,5-2 mm longa, purpurea, semiclausa; tubus floralis supra eam cyathiformis, 12-18 mm longus, interne purpureus; filamenta purpurea, biseriata; stylus flaveolus, brevis, stigma 8-11, pallide flava; petala 12-15 mm longa, 5-7 mm lata, obtusa vel breviterb mucronata, alba vel rosacea virgis mediae partis purpureis; fructus 15-20 mm longus, 7-10 mm latus; semina 1,2 mm longa, 0,7 mm lata, rubelliatra, subtiliter tuberculosa, hilo ventrali; habitat El Paicho, Prov. Mendez, Bolivia.