First description was in:

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Rauhocereus riosaniensis Backbg. n. sp.

Latin Diagnosis:
Erectus; e basi ramosus; trunco ad 30 cm crasso; ramis ad 4 m altis; costis ca. 5, transverse sulcatis; aculeis ca. 6, superiore longiore, ad 5cm longo, basi carmineo, in superiore parte flavido, deinde albo-griseis; flore campanulato, ad 6cm longo; tubo dense squamoso, lana nigra praedito; phyllis perigonii interioribus albis; fructu rubro, squamoso, lanigero, pulpa miniata; seminibus parvis, nigris. — Peruvia (Rio Sana, 800 m, et Jaen). — Typ-No. K 75 (1966) und Coll.-No. K 141 (1954).


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