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Parmotrema gardneri (C. W. Dodge) Sérus.

Data Set Maintenance: Data set standard item. Data set author(s): Nash T.H. Data set reviewer(s): Nash T.H.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Parmotrema. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Type: Parmelia gardneri Dodge.

Biogeography: Pantropical; submontane and montane. Continent: Africa, Australasia, Northern America, and Asia-Tropical. Checklist records: Australia, Mexico, and Sonoran Desert.

Ecology: Biotroph; lichenized; corticolous.

Thallus: Foliose, subdivided into main parts, without secondary parts, irregular, continuous throughout, lobed; lobes sub ascending; plane; branches applanate (moderately flattened); bifacial; separate thallus parts 8-11.5-15 mm wide. Thallus Size and Differentiation: 4-5-6 cm in diameter; apex rounded. Upper Surface: Grey, matt; not fissurate; not foveate; immaculate; epruinose; not pseudocyphellate; eciliate; cilia marginal; without hairs; not isidate; without isidiomorphs; not papillate, not pustulate; sorediate; soralia white, peripheral, sub capitate, linear, isolated, not confluent with other soralia, soredia coarse; not tuberculate; not lobulate. Lower Surface: Present, black, black in the centre, brown along the margin; attached by holdfasts; not cyphellate; not wrinkled; rhizinate; rhizines sparse, with a broad non-rhizinate margin, black, not branched; not tuberculate.

Upper Cortex: Double-layered.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, forming all across the thallus surface, sparse, 2-2.5-3 mm in diam.. Margin: Epruinose; sorediate. Disk: Brown.

Asci: Dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, 18-20-22 µm long, 8-9-10 µm wide.

Conidiomata: Present; immersed.

Conidia: Sublageniform; 6-6.5-7 µm long; 1 µm wide.

Secondary Metabolites: Present; only in the upper part of the cortex, throughout the cortex, or throughout the thallus medulla, atranorin, chloroatranorin, or protocetraric acid.

Spot Tests: Cortex: KC + deep yellow; medulla: K –, C –, KC –, PD + red.

(report generated 04.Okt.2007)

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