Rev. Bot. 6: 151 (1887)

Basionym: Ramalina fraxinea epsilon roesleri Schaerer, Enum. Lich. Europ.: 9 (1850).

Thallus: up to 2 cm high, loosely tufted, moderately branched. Branches pale green-grey, terete, hollow, perforated, 0.1 - 0.5 mm wide, of uneven width, with finely dissected apices. Medullary layer thin, discontinuous. Regular, delimited soralia absent, but easily detached non-corticate granules produced at the apices of the branches. Apothecia not seen in East African material (Swinscow & Krog 1988: 288).

Photobiont: Green alga.

Chemistry: Usnic acid in the cortex. Substances in the sekikaic acid agg. (Swinscow & Krog 1988: 288).

Ecology: In East Africa corticolous among bryophytes in elfin forest at 2250 m altitude (single locality) (Swinscow & Krog 1988: 288).

Molecular data: Genbank

Distribution: Database

Note: "The Tanzanian specimen resembles the North American morphotype of the species, which has a distinctly hollow thallus, and apical granules rather than delimited soralia as seen in European specimens" (Swinscow & Krog 1988: 288 from East African material).