Globosphaeria D. Hawksw. (1990)

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): 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: 1. Globosphaeria. Genus of unknown placement (incertae sedis); Sordariales.

Type Information: Type: Globosphaeria jamesii D. Hawksw.

Taxonomic Literature: Hawksworth D.L., Lichenologist 22: 301-305 (1990); Matzer M., Cryptog. Mycol. 14: 11-19 (1993).

Biogeography: Checklist records: New Zealand.

Ecology: Biotroph; lichenicolous.

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: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Perithecioid, orbicular, soon sessile. Margin: External filaments absent. Exciple: Brown. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Brown.

Asci: Tholus not thickened or thickened, not amyloid; dehiscence unitunicate; exoascus not amyloid, not hemiamyloid.

Ascospores: c. 8 per ascus, globose, 8-10 µm long, 8-10 µm wide, obtuse; septa absent; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Present or absent resp. not observed.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)