Preliminary version 1 October 2013
Stirtonia santessonii Makhija & Patw.
Biovigyanam 13: 49 (1987).
Synonym: Index Fungorum
Type: India, South Andaman, Reskin Island, 12 December 1985, Nagarkar & Patwardhan (AMH 85.1985 - holotype, ABL - isotype, AMH 85.1986 - topotype, ABL).
Barcode: Data lacking.
Coordinates: Data lacking.
Thallus: crustose, spreading, covering an area of up to 5 cm diameter, contiguous, smooth, pale brownish, <0.1 mm thick, lightly shiny, with calcium oxalate crystals, IKI-. Ascigerous zones delimited, whitish, round, ca. 0.5 - 1.5 mm diameter, raised, not pruinose, with pale to dark brownish asci in lirelliform, irregularly stellately branched, ca. 0.1 - 0.3 mm wide lines, with calcium oxalate crystals, without algal cells, IKI+ blue. Asci visible as pale to dark brown lines in surface view, globose to ovoid, with 8 ascospores. Ascospores 7-septate, ellipsoid, 35-50 / 13-18 µm, upper cell largest, walls and septa >1 µm thick (Aptroot 2009: 622).
Photobiont: Green alga.
Chemistry: No lichen substances (TLC). Thallus and ascigerous zones C-, Pd-, KOH-, thallus UV-, ascigerous areas UV+ white (Aptroot 2009: 622).
Ecology: On bark.
Molecular data: Genbank
Distribution: Database
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