Protolog: "Thallus albus vel cremeo-albus, continuus, partim tenuis, partim subbullato inaequalis, subnitidus, KOH+ leviter lutescens, Pd-. Apothecia dispersa, elongata, rimiformia, parce ramosa, recta vel leviter undulata, thallo immersa vel leviter emersa, ad discum atrum, depressum thallo tecta. Excipulum integrum, labiis conniventibus. Thecium oleoso-inspersum. Sporae 6:nae (vel 8:nae) olivaceae, mediocres, cellulis circ. 8 uniserialiter instructae.
Hawaii. Kilauea, at 1200 m, 1909 Faurie (1048 a) on bark.
Type locality: USA, Hawaii, Big Island ("Hawaii"), Kilauea, at 1200 m, on bark, 1909, Faurie 1048a (xxx - holotype).
Barcode: Available. Data lacking.
Coordinates: Data lacking.

Thallus: 5 x 2.5 cm wide, following the unevennesses of the bark, without cracks, but with 0.5-1 mm large, diffuse elevations also on parts with very thin thallus. Numerous, + large oxalate crystals occur from bottom to surface. Apothecia 2-5 mm long, 0.4-0.5 mm broad with the thalline margin reaching the narrow black fissure, the lips also with a thin cover, becoming greyish, the angles of the few branches very wide. Exciple 0.4 mm broad, 0.18-0.3 mm high, wall laterally about 50 µm thick, smooth or uneven, thinning at the uncurved top, base of exciple up to 60 µm broad or by intruding crystals divided into a black mesh. Hypothecium only 10-15 µm, colourless. Thecium to 270 µm broad, 90-120 µm high, densely inspersed with oil-drops, upper surface concave, dark brown. Spores 35-42 x 12-15 µm, usually with 8 lens-shaped cells in a single row (Magnusson 1957: 262).

Photobiont: Data lacking.

Chemistry: No lichen substances.

Ecology: On bark.

Molecular data: Genbank

Distribution: Database

Note: The new species is distinguished from other species of Sect. Solenothecium with 30-50 µm long spores by their breadth which in other species does not surpass 10 µm. The bullate thallus and the long, narrow apothecia seem also to be good characters (Magnusson 1957: 263).