Alectoria Ach. (1810)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Scholz P. (02-05-14); revised @EXCL@ not revised (Scholz 02-05-13); to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 8. Alectoria. Alectoriaceae (Hue) Tomas. (1949); Lecanorineae; Lecanorales.

Type Information: Type: Alectoria sarmentosa (Ach.) Ach.

Taxonomic Literature: Brodo I.M. & Hawksworth D.L., Op. Bot. Soc. Bot. Lund 42: 1-164
(1977); Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662
[4-5], Wellington (1985); Hawksworth D.L., Lichenologist 5: 181-261
(1972); Lamb I.M., Brit. Antarc. Surv. Sci. Rep. 38: 1-34, tab. I-
XVI, pl. I-IX (1964); Purvis O.W. in: Purvis O.W. et al. (eds), The
Lichen Flora of Great Britain and Ireland, London (1992); Ryan B.D. in: Nash T.H. III et al. (eds), Lichen Flora of the Greater Sonoran Desert Region vol. 1: 92-95, Tempe (2002);.

Biogeography: Checklist records: Austria, Bolivia, Germany, Great Britain, Italy, New Zealand, Sonoran Desert, Sweden and Norway, and United States and Canada (continental).

Ecology: Biotroph; lichenized; lignicolous or corticolous.

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

Thallus: Fruticose, not subdivided parts. Upper Surface: Special structures present:; pseudocyphellate; eciliate; without hairs; not isidate; not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; special structures absent.

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: Distinct to prominent; external filaments absent. Exciple: Grey or white. Periphyses: Absent. Epithecium: Apical cells grey, green, brown, or hyaline. Hymenium: Iodine reaction: Lugol’s positive. 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: 1–2 per ascus, broadly ellipsoid or ellipsoid, 20-45 µm long, 12-25 µm wide, obtuse; septa absent; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, dark brown, middle brown, grey, hyaline, or pale brown, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed, formed along the thallus periphery.

Conidiogeneous Cells: Intercalar. Conidia: Bacilliform; aseptate.

Secondary Metabolites: Not detected or present, of the following substance class(es): orcinol depsides, orcinol depsidones, ß-orcinol depsides, ß-orcinol depsidones, benzyl esters, and dibenzofurans [and usnic acids].

(report generated 04.Okt.2007)