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Aulaxina Fée (1825)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Lücking R. (95-08-01) and Scholz P. (06-06-12, 06-08-07); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 10 (estimation provided by A. Aptroot 99-09-27)-11. Aulaxina. Gomphillaceae W. Watson ex Hafellner (1984); Ostropales.

Type Information: Type: Aulaxina opegraphina Fée.

Taxonomic Literature: Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M.,
Biblioth. Lichenol. 64: 1-220 [21-22] (1997); Galloway D.J., Flora of
New Zealand Lichens: i-lxxiii, 1-662 [23-24], Wellington (1985);
Lücking R. & Kalb K., Bot. J. Linn. Soc. 139: 171-180
(2002); Santesson R., Symb. Bot. Upsal. 12: 1-590 [296-306] (1952);
Vezda A., Folia Geobot. Phytotax. 14: 43-94 (1979); Vezda A. &
Poelt J., Folia Geobot. Phytotax. 22: 179-198 (1987).

Biogeography: Checklist records: Guianas, New Guinea, New Zealand, and United States and Canada (continental).

Ecology: Biotroph; lichenized; epiphyllous.

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

Thallus: Crustose, not subdivided parts. Thallus Outline: Persistent. Upper Surface: Grey or green; special structures absent. Lower Surface: Attached by the whole lower surface; special structures present:; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

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: Prominent. Exciple: Black or brown. Periphyses: Absent. Epithecium: Apical cells hyaline. Interascal Hyphae: Present, scarcely branched to distinctly branched, not or scarcely anastomosed to distinctly anastomosed. Hypothecium: White.

Ascospores: 1–2 to c. 8 per ascus, oblong, cylindrical, or fusiform, 6-76 µm long, 2-24 µm wide, obtuse; septa present; transversally septate or both transversally and longitudinally, 1-23-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial or hyphophorous; sessile, formed all accross the thallus surface.

Conidiogeneous Cells: Apical. Conidia: Bacilliform or fusiform.

(report generated 04.Okt.2007)


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