First description was in:

page 20
Trichocereus tarmaensis Rauh & Backbg. n. sp.

Latin Diagnosis:
Erectus, ad 2 m altus, e basi ramosus; ramis 5,5 cm crassis (ac crassioribus ?), claro-viridibus; costis 7, basi ad 1,5 cm latis, rotundulis, sub areolis depressis; areolis rotundis, ca. 8 mm Ø, tomento griseo; aculeis radialibus ca. 7, interdum une superiore longiore, ad 3cm longo, ceteris 0,8—2 cm (lateralibus) longis, primum cornicoloribus, deinde griseis; aculeo centrali 1, basi aliquid incrassato, ad 5,5 cm longo, primum cornicolore, aliquid maculato, deinde griseo, aliquid deorsum distante; flore veri similiter albo; tubo lana pulla; seminibus satis parvis, nitentibus. — Peruvia centralis (Tarma, 3000m). — Typ-No. K 8 (1956).

[English translation]


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