Keratosphaera H. B. P. Upadhyay (1964)
Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Triebel D. (98-01-01; 00-02-29); revised; to be published after submission.
Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Keratosphaera. Pseudoperisporaceae Toro (1926); Dothideales.
Type Information: Type: Keratosphaera batistae H.B.P. Upadhyay.
Taxonomic Literature: Eriksson, O.E. & Hawksworth, D.L., Bull. Brit. Mus. (Nat. Hist.), Bot. 9(1): 1-98 [85-86] (1981); Lücking R., Trop. Bryol. 15: 45-76 [60] (1998); Matzer M., Mycol. Pap. 171: 1-202 [114-129] (1996); Upadhyay H.B.P., Inst. Micol. Recife Publicacao 402: 1-11 (1964).
Biogeography: Checklist records: Austria and Guianas.
Ecology: Biotroph; lichenicolous; epiphyllous.
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. Wall: Not carbonized, not fused. Margin: Prominent; external filaments present. Exciple: Brown or brownish yellow. Periphyses: Absent. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Absent. Hypothecium: Brown, white, or brownish yellow.
Asci: Tholus thickened, not amyloid; ocular chamber indistinct; dehiscence bitunicate; exoascus not amyloid, not hemiamyloid.
Ascospores: c. 8 per ascus, ellipsoid, ovoid, or clavate, 6-11 µm long, 2-4 µm wide, obtuse; septa present; transversally septate, 1-transversally septate, formed by the proper spore wall; wall 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; pycnidial; sessile.
Conidiogeneous Cells: Apical. Conidia: Bacilliform.
Secondary Metabolites: Not detected.
(report generated 04.Okt.2007)
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