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Data Set Maintenance: Data set compiled (by C. Kainz, 03-04-09) and standard item.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Endococcus. Synonyms: Discothecium macrosporum (Arnold) Zopf; Mycoporum macrosporum (Arnold) Jatta; Endococcus perpusillus var. macrosporus (Arnold) Oliv.; Verrucariaceae Zenker (1827); Verrucariales.

Type Information: Basionym: Trichothecium macrosporum Hepp ex Arnold, Verh. K. K. Zool.-Bot. Ges. Wien 18: 960 (1868).

Taxonomic Literature: Taxonomic notes: "Gehäusewand im Schnitt apikal verdickt (Durchmesser bis 50 µm), nicht Clypeus-artig verbreitert, dunkelbraun, nach unten zu mittelbraun bzw. rotbraun, 10-20(-25) µm im Durchmesser, aus ca. 6-10 Zellschichten; Wandzellen oben unregelmäßig und stark verdickt oder vollkommen kohlig, nach unten zu tangential gestreckte Gehäusezellen z.T. mit dicken 'verquollenen' Zellwänden, ca. 5-8(-12) x 2.5-4.5(-5) µm; subhymenialer Bereich farblos; braune Gehäusezellen im Ostiolumbereich z.T. etwas hyphenartig verlängert; asci cylindrical to slightly clavate, sessile or with a short stalk, (40-)50-60(-77) x (12-)15-20(-24) µm; "E. macrosporus" might have sometimes slightly larger ascocpores with spore walls being apically somewhat darker, and larger ascomata as E. perpusillus s.str."; host lichen Rhizocarpon geographicum (thallus). Triebel D., Biblioth. Lichenol. 35: 1-278[92] (1989); Hafellner J. et al., Mycotaxon 84: 293-329 (2002).

Biogeography: Continent: Africa, Asia-Temperate, Australasia, Europe, and Northern America. Checklist records: Sonoran Desert and United States and Canada (continental).

Ascocarps: Perithecioid, not emerging, becoming adnate (rarely), .1-.15-(.225) mm in diam.. Margin: Black. Periphyses: Present (periphysoids, ramifications absent or present, septate, ca. 12-18 x (1.5-)2.5 µm).

Ascospores: c. 8 per ascus, narrowly ellipsoid (often curved), (12.5)-13-21 µm long, (4.5)-5-8-(8.5) µm wide; septa present (not or distinctly constricted at septum); wall thin (mostly), rarely middle brown to grey to pale brown (partly slightly greenish), not ornamented (mostly).

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