Cladonia umbricola Tønsberg & Ahti

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 or basionymous. Taxonomic rank: species. Cladonia. Cladoniaceae Zenker (1827).

Taxonomic Literature: Taxonomic notes: includes all chemical strains. Brodo I.M. & Ahti T., Can. J. Bot. 74: 1147-1180 (1996).

Ecology: Lignicolous (conifer bark and rotten wood) or corticolous; growing sun-exposed, partially shaded, or fully shaded.

Thallus: Crustose, squamulose; lobes ascending or horizontal; branches densely aggregated, loosely aggregated, scattered, or clustered; separate thallus parts 1.5-7 mm long; 2-7 mm wide. Primary Thallus: Persistent. Secondary Thallus: Present, arising from center of the primary thallus, of determinate growth; stipe 6-27 mm high, .5-2 mm wide, lime green, homogeneously coloured, not corticate (on podetia), with intact wall. Thallus Outline: Margin dissected (and lobulate, usually very thin). Upper Surface: Grey-green or lime green (greenish yellow to greyish greenish yellow or olive (103-105, 109)); not sorediate or sorediate; soredia farinose or coarse. Lower Surface: White, yellow, orange, or brown (at the base); sorediate (close to margins).

Lower Cortex: Absent.

Ascocarps: Forming apical at the tip of branches or stipes or along the margin of scyphi, moderately abundant, .5-1 mm in diam.. Disk: Plane (margins persistent, very thin, sometimes flexuose); red.

Conidiomata: Formed on podetia or on margins of scyphi.

Secondary Metabolites: Squamatic acid, thamnolic acid (with decarboxythamnolic acid), and usnic acid, of the following substance class(es): ß-orcinol depsides.

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

UV-Fluorescence: Reaction colour: bright bluish white.

(report generated 15.Nov.2007)