Japewia Tønsberg (1990)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Printzen C. (98-05-27) and Triebel D. (98-01-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 3. Japewia. Lecanoraceae Körb. (1855); Lecanorineae; Lecanorales.

Type Information: Type: Japewia tornoensis (Nyl.) T nsberg.

Taxonomic Literature: Taxonomic notes: Data refer to J. carrollii; J. subaurifera and I. tornoensis; hymenial gel not amyloid in young apothecia, but looking as amyloid when asci are abundant. Hinteregger E., Biblioth. Lichenol. 55: 1-346 [158-159] (1994); Rambold G. & Triebel D., Biblioth. Lichenol. 48: 1-201 [141] (1992); Tønsberg T., Lichenologist 22: 205-212 (1990).

Biogeography: Checklist records: Austria, Germany, Great Britain, Sonoran Desert, Italy, Sweden and Norway, and United States and Canada (continental).

Ecology: Biotroph; lichenized or lichenicolous; terricolous, bryophytic, lignicolous, or corticolous; substrate non-calciferous.

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

Thallus: Indistinct or crustose, not subdivided parts, granular, rimose, or areolate (primarily areolate). Upper Surface: Brown, green, grey, brownish yellow, or olive; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by the whole lower surface; special structures absent.

Medulla: Iodine reaction in Lugol's solution negative.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, soon sessile. Margin: Indistinct to distinct; external filaments absent. Exciple: Brown, grey, white, or brownish yellow. Periphyses: Absent. Epithecium: Apical cells black or brown. Hymenium: Iodine reaction: Lugol’s negative or Lugol’s positive, not hemiamyloid or hemiamyloid. Interascal Hyphae: Present, scarcely branched to distinctly branched, not or scarcely anastomosed to distinctly anastomosed. Hypothecium: White or brownish yellow.

Asci: Tholus thickened, amyloid, with non-amyloid wide axial body and divergent amyloid flanks towards apex; ocular chamber indistinct or broad; dehiscence lecanoralean; exoascus euamyloid, hemiamyloid.

Ascospores: c. 8 per ascus, ellipsoid, broadly ellipsoid, globose, or ovoid, 11-24 µm long, 7-15 µm wide, obtuse; septa absent; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed.

Conidiogeneous Cells: Apical. Conidia: Bacilliform.

Secondary Metabolites: Not detected or present, of the following substance class(es): orcinol depsides, orcinol depsidones, and ß-orcinol depsides.

(report generated 04.Okt.2007)