Cladonia cervicornis ssp. verticillata (Hoffm.) 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. Taxonomic rank: species. Cladonia. Cladoniaceae Zenker (1827).

Taxonomic Literature: Taxonomic notes: not on QCI; description from Thomson 1984 and Canadian material in H. 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 or lignicolous; growing sun-exposed; substrate non-calciferous.

Thallus: Crustose, squamulose; lobes ascending or horizontal; rounded at the front; branches densely aggregated, scattered, loosely aggregated, or clustered; separate thallus parts 1-4 mm long; 1-4 mm wide. Primary Thallus: Persistent. Secondary Thallus: Present, arising from center of the primary thallus, of determinate growth; stipe 10-50 mm high, 1-3 mm wide, lime green or olive, homogeneously coloured, corticate, with intact wall. Thallus Outline: Margin entire or crenulate. Upper Surface: Lime green or olive, smooth; not sorediate. Lower Surface: White or brown.

Lower Cortex: Absent.

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

Conidiomata: Formed on margins of scyphi.

Secondary Metabolites: Fumarprotocetraric acid, didymic acid, and squamatic acid, of the following substance class(es): ß-orcinol depsidones and dibenzofurans [and usnic acids].

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

(report generated 15.Nov.2007)