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Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. Data set not revised; not to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Stigmidium. Genus incertae sedis: Stigmidium; of unknown placement (incertae sedis).

Taxonomic Literature: Roux C., Navarro-Rosinés P. & Tranchida F., Cryptog. Bryol. Lichénol. 19 (2-3): 221-228 (1998).

Biogeography: Continent: Europe. Region(s): South-western Europe. Country or state(s): France (excl. Corsica).

Ecology: Biotroph; lichenicolous, endosubstratic. Host or Phorophyte Taxonomy: Lecania nylanderiana.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid (pseudothecioid), globose or subglobose, forming inside the thallus or mycelium of the host, within the ascocarp margin of the host or within the ascocarp disks of the host, not emerging, becoming adnate, moderately abundant, 65-100 µm wide, 70-100 µm high, with a black surface. Wall: Not carbonized. Margin: Dark brown or brownish red, 10-15 µm wide; external filaments absent. Exciple: Paraplectenchymatous; hyphae 2.5-7 µm wide, not carbonized, dark brown or brownish red. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed; cells 1.5-5 µm wide. Hypothecium: Dark brown or brownish red.

Asci: Clavate, not stipitate or distinctly stipitate (shortly stipitate), 41-49 µm long, 12-16 µm wide; ocular chamber present; narrow; dehiscence bitunicate (fissitunicate); exoascus not amyloid.

Ascospores: Not uniseriate, c. 8 per ascus, spores 8 per ascus, oblong-obtuse, clavate (subclavate), or oblong, (13.5)-15-16.7-18-(19.5) µm long, (3.5)-4-4.7-5.5 µm wide, obtuse; septa present, transversally septate, 1-transversally septate; lumina of equal size or apically enlarged, constricted at the centre; wall thin, remaining hyaline, hyaline, not ornamented or ornamented.

Conidia: Globose (globose to somewhat oblong); 2.5-3.5 µm long, .5-1 µm wide.

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