J. Jap. Bot. 15: 221 (1939).

Type: Japan, Honshu, Prov. Kohzuke, Kitakanbara-gun, Nanjai, 16 October 1921, E. Uematsu (Herb. Y. Asahina 344) (TNS - lecottype) [TLC: Usnic acid, salazinic acid].

Thallus: fruticose, 1 - 2 - 3 cm long, sparsely and irregularly or dichotomously branched, caespitose, growing from an extended holdfast. Branches greenish yellow to straw-yellow, solid, 0.2 - 0.6 - 0.8 mm wide, irregular in thickness, more or less flat to subterete, tips often ending in soralia, surface shiny, smooth, without pseudocyphellae. Soralia subterminal or laminal, ellipsoid or lip-shaped, often with isidioid branchlets. Thallus 100 - 200 µm thick; cortex indistinct; chondroid tissue very weakly or rarely conspicuously cracked; medulla continuous or discontinuous, dissected with thickened chondroid tissue. Apothecia and pycnidia unknown (Kashiwadani 1987: 134).

Photobiont: Green alga.

Chemistry: Usnic acid, + salazinic acid (Kashiwadani 1987: 134).

Ecology: saxicolous.