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Cladonia albonigra Brodo & 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: close to C. merochlorophaea var. novochlorophaea. Brodo I.M. & Ahti T., Can. J. Bot. 74: 1147-1180 (1996).

Ecology: Terricolous, bryophytic, or lignicolous; growing sun-exposed.

Thallus: Crustose, squamulose; lobes elongate, ascending or horizontal; rounded at the front; branches loosely aggregated or scattered; separate thallus parts.5-2 mm long; .4-1 mm wide. Primary Thallus: Persistent. Secondary Thallus: Present, of indeterminate or of determinate (with marginal proliferations continuing, producing up to 4 or 5 tiers) growth; stipe 10-47 mm high, 1-2.5 mm wide, grey-green, lime green (121), or brown (to reddish brown (47-43)), mottled, corticate or not corticate, with intact wall. Thallus Outline: Margin entire or crenulate. Upper Surface: Areolated (areoles thick, convex, greenish or brownish when fresh, turning almost white in old podetia and standing out against the blackened, decorticate stereome), grey-green or lime green (pale (121)); not sorediate. Lower Surface: White.

Lower Cortex: Absent.

Ascocarps: Forming along the margin of scyphi, sparse, 1-2 mm in diam.. Disk: Strongly convex; brown.

Secondary Metabolites: Fumarprotocetraric acid, 4-O-methylcryptochlorophaeic acid, grayanic acid (with 4-O-methylgrayanic acid), and protocetraric acid, of the following substance class(es): ß-orcinol depsidones and orcinol depsides (with or without 4-O-methylcryptochlorophaeic or grayanic).

Spot Tests: Upper surface: K – (negative), C –, PD + red.

UV-Fluorescence: Reaction colour: bright bluish white.

(report generated 15.Nov.2007)

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