Catal. Lich. Univ. 6: 534 (1940).

Basionym: Usnea barbata var. amblyoclada Müll. Arg., Flora 72: 509 (1889).

Protolog: Data lacking.

Type locality: Argentinia, Felsen am Fuß der Sierra Ventana, 1881, Lorentz (G - holotype).

Type locality coordinates: 38°9'0" S, 61°48 0"W; -38.15°, -61.8°.