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Canomaculina Elix & Hale (1987)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Elix J. A. (95-06-01) and Scholz P. (02-05-14); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 19. Canomaculina. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Type: Canomaculina pilosa (Stiz.) Elix & Hale.

Taxonomic Literature: Elix J.A., Bryologist 96: 359-383 (1993); Elix J.A. & Hale M.E.,

Mycotaxon 29: 239 (1987); Hale M.E., Smithsonian Contributions to

Botany 33: 1-60 (1976); Nash T.H. III & Elix J.A. in: Nash T.H.
et al. (eds), Lichen Flora of the Greater Sonoran Desert Region vol.
1: 120-122, Tempe (2002).

Biogeography: Checklist records: Sonoran Desert and Republic of South Africa.

Ecology: Biotroph; lichenized; corticolous; substrate non-calciferous.

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

Thallus: Foliose, not subdivided parts, lobed. Thallus Outline: Soon disappearing. Upper Surface: Grey; special structures present:; not pseudocyphellate; ciliate; without hairs; not isidate or isidiate; not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; special structures present:; not pseudocyphellate; not cyphellate; 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; external filaments absent. Exciple: Grey or white. Periphyses: Absent. Epithecium: Apical cells brown or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, amyloid, with non-amyloid wide axial body and divergent amyloid flanks towards apex; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, broadly ellipsoid or ellipsoid, 8-20 µm long, 5-12 µm wide, obtuse; septa absent; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

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

Conidia: Filiform; aseptate.

Secondary Metabolites: Present, of the following substance class(es): ß-orcinol depsides, ß-orcinol depsidones, and (higher) aliphatic acids.

(report generated 04.Okt.2007)


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