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Stirtonia A. L. Sm. (1926)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 10 (A. Aptroot 99-09-27). Stirtonia. Arthoniaceae Reichenb. (1841); Arthoniales.

Type Information: Type: Stirtonia obvallata (Stirt.) A.L. Sm.

Taxonomic Literature: Awashti D.D. & Singh K.P., Geophytology (India) 1: 97-102 (1972) - sub S. monospora; Makhija U. & Patwardhan P.G., Biovignyanam 13: 43-51 (1987); Santesson R., Symb. Bot. Upsal. 12: 1-590 [59-63] (1952); Vezda A. & Kalb K., Nova Hedwigia 53(1-2): 215-228 [227] (1991).

Biogeography: Checklist records: United States and Canada (continental), Guianas, and Thailand.

Ecology: Biotroph; lichenized; corticolous or epiphyllous.

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

Thallus: Crustose, not subdivided parts, leprose. Thallus Outline: Soon disappearing or persistent. Upper Surface: Green, grey, or white; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent or present:; not pseudocyphellate; not cyphellate; not 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: Irregular, forming all across the thallus surface, stromatic. Margin: Indistinct. Periphyses: Absent. Interascal Hyphae: Present, distinctly branched.

Asci: Dehiscence bitunicate.

Ascospores: c. 8 per ascus, clavate or fusiform, 60-116 µm long, 29-60 µm wide; septa present; transversally septate, 4-15-transversally septate; wall thin, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present.

Secondary Metabolites: Not detected or present, of the following substance class(es): orcinol depsides.

(report generated 04.Okt.2007)

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