Xanthoparmelia farinosa (Vain.) Nash, Elix, and Johnston

Mycotaxon 28, 2: 292 (1987).

Basionym: Parmelia farinosa Vain., Acta Soc. Fauna Flora fenn. 7(no. 1): 62 (1890).

 

Synonyms: Index Fungorum

Type: Brazil, Minas Gerais, Sitio, Vainio, Lich. Bras. Exs. 551 (TUR - lectotype; BM, UPS - isolectotypes).

 

Thallus: adnate, 2-4 cm broad, light yellowish green; lobes subirregular to sublinear, 1-2 mm wide, continuous to imbricate; upper surface continuous emaculate, shiny, moderately sorediate, the soralia laminal, orbicular, 0.4-1 mm in diameter; medulla white; lower surface plane, shiny, pale brown, moderately rhizinate, the rhizines pale brown or darkening, simple, 0.3-0.6 mm long. Pycnidia and apothecia lacking.

Thallus:Thallus adnate on rock, 2-4 cm broad, light yellowish green; lobes subirregular to sublinear, 1-2 mm wide, contiguous to imbricate; upper surface continuous, emaculate, shiny, moderately sorediate, the soralia laminal, orbicular, 0,4-1 mm in diameter; medulla white; lower surface plane, shiny, pale brown, moderately rhizinate, the rhizines pale brown or darkening, simple, 0,3-0,6 mm long. Pycnidia and apothecia lacking.

Photobiont: Trebouxia.

Chemistry: Stictic acid, norstictic acid, constictic acid, usnic acid.

Ecology: on rock.

Molecular data: Genbank

Distribution: Distribution: Ecuador, Peru, Brazil, Uruguay, Argentina. Database

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