Arthophacopsis Hafellner

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Triebel D.; to be published after submission.

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

Type Information: Type: Arthophacopsis parmeliarum Hafellner.

Taxonomic Literature: Taxonomic notes: cecidogenous; obligately lichenicolous fungus. Hafellner J., Cryptog. Bryol. Lichénol. 19(2-3): 155-168 (1998).

Biogeography: Checklist records: Austria and Italy.

Ecology: Biotroph; lichenicolous; bryophytic or corticolous; substrate non-calciferous.

Lichen Photobionts: Primary photobiont absent. Secondary photobiont absent.

Thallus: Indistinct.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular or linear, not emerging, becoming adnate. Wall: Not carbonized, not fused. Margin: Indistinct; external filaments absent. Exciple: White or brownish yellow. Periphyses: Absent. Epithecium: Apical cells brown or pink (rosé). Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed. Hypothecium: White or brownish yellow.

Asci: Tholus thickened, not amyloid; ocular chamber broad; dehiscence bitunicate (arthonial); exoascus not amyloid, not hemiamyloid.

Ascospores: c. 8 per ascus, broadly ellipsoid, 9-12 µm long, 5-7 µm wide, obtuse; septa absent; 0-0-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Present or absent resp. not observed; pycnidial; immersed.

Conidia: Bacilliform; microconidial, not branched; aseptate; 0-0-septate; cell wall hyaline.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)