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Krogia Timdal (2002)

Data Set Maintenance: Data set standard item. Data set author(s): Scholz P. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Genus of unknown placement (incertae sedis) (Phyllopsoraceae or Bacidiaceae); Lecanorineae; Lecanorales.

Type Information: Type: Krogia coralloides Timdal.

Taxonomic Literature: Timdal E., Lichenologist 34: 293-296 (2002).

Ecology: Biotroph; lichenized; corticolous.

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Eukariota. Secondary photobiont absent.

Thallus: Crustose, squamulose. Thallus Outline: Persistent. Upper Surface: Greyish green; special structures absent; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate; not cephalodiate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Special structures absent; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

Medulla: Iodine reaction in Lugol's solution negative; not different with or without KOH pre-treatment (euamyloid).

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, soon sessile. Wall: Not carbonized, not fused. Margin: Indistinct; external filaments absent. Exciple: Brown (pale to colourless). Epithecium: Apical cells hyaline. Hymenium: Iodine reaction: Lugol’s positive, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Brown.

Asci: Tholus not thickened, not amyloid; ocular chamber broad; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, filiform, 22-30 µm long, 1 µm wide, aciculate; septa absent or present ((pseudo-)septa); transversally septate, 0-1-3-transversally septate, formed by the endospore wall layer; wall thin, not thickened at the septum, not constricted where the septum meets the spore wall, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed.

Secondary Metabolites: Present, of the following substance class(es): ß-orcinol depsides (boninic acid).

(report generated 04.Okt.2007)

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