Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

Perigrapha Hafellner (1996)

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Scholz P. (06-06-12) and Triebel D. (98-01-01; 02-03-27); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Perigrapha. Opegraphaceae Stizenb. (1862); Arthoniales.

Type Information: Type: Perigrapha superveniens (Nyl.) Hafellner.

Taxonomic Literature: Ertz D., Christnach C., Wedin M. & Diederich P., Biblioth. Lichenol. 91: 1-155 [135-138] (2005); Hafellner J., Nova Hedwigia 63: 173-181 (1996); Hafellner J., Mycotaxon 80: 381-387 (2002);.

Ecology: Biotroph; lichenicolous; corticolous.

Lichen Photobionts: Primary photobiont absent. Secondary photobiont absent.

Thallus: Indistinct.

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: Perithecioid, orbicular, not emerging, stromatic. Wall: Carbonized around the ostiole, lacking a clypeus, not fused. Margin: Prominent; external filaments absent. Exciple: Black or brown. Periphyses: Absent. Epithecium: Apical cells brownish yellow. Hymenium: Iodine reaction: Lugol’s negative, hemiamyloid. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed. Hypothecium: Brownish yellow.

Asci: Tholus thickened, amyloid, with amyloid tube; dehiscence bitunicate; exoascus not amyloid, hemiamyloid.

Ascospores: c. 4 to c. 8 per ascus, fusiform, 30-35 µm long, 4.5-6 µm wide, aciculate; septa present; transversally septate, 3-transversally septate, formed by the proper spore wall; wall 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 or ornamented.

Conidiomata: Absent resp. not observed.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.