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Data Set Maintenance: Data set standard item. Data set author(s): Brodo I. & Ahti T. (96-12-10). Data set to be published after submission; 96-12-10.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Cladonia. Cladoniaceae Zenker (1827).

Taxonomic Literature: Taxonomic notes: not on QCI; description from Thomson 1984. Brodo I.M. & Ahti T., Can. J. Bot. 74: 1147-1180 (1996); Thomson, J.W., American Arctic Lichens 1. The macrolichens, New York (1984).

Ecology: Terricolous, bryophytic, lignicolous, or corticolous; growing sun-exposed or partially shaded; substrate non-calciferous.

Thallus: Crustose, squamulose; lobes ascending or horizontal; branches loosely aggregated, scattered, or clustered; separate thallus parts 2-4 mm long. Primary Thallus: Evanescent or persistent. Secondary Thallus: Present, of determinate growth; stipe 20-60 mm high, 1-3 mm wide, lime green (yellow), homogeneously coloured, not corticate, with intact or longitudinally split wall. Thallus Outline: Margin crenulate or dissected. Upper Surface: Lime green; not sorediate or sorediate; soredia farinose or coarse. Lower Surface: White or brown; sorediate.

Ascocarps: Forming along the margin of scyphi, moderately abundant, 1-3 mm in diam.. Disk: Weakly convex to strongly convex; red.

Spot Tests: Upper surface: K – (negative), C –, + deep yellow, or + orange, PD –.

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