MycoBank number:MB 552187;Index Fungorum number:IF 552187;Facesoffungi number: FoF 02248; 14 species.

Pathogenicandsaprobicon dead herbaceous branches. Sexual morph:Stromataprosenchymatous around perithecia, delimited externally by greenish-blackened dense pseudoparenchymatous zone, interior whitish, composed of interwoven hyphae mixed with substrate cells, 3–5 ascomata in a stromata.Ascomataperithecial, small, aggregated, scattered, globose to subglobose, light brown to dark brown, coriaceous, ostiolate, papillate.Papillaconverging and erumpent through stroma surface as single, large opening, wide at the top, narrowing towards the base, dark brown region around base of papilla.Peridiumcomprises light brown, compressed, cells oftextura angularis.Asci8-spored, unitunicate, cylindrical, short pedicellate, with a J-, apical ring.Ascosporesuniseriate, broadly ellipsoid, 1-septate, not or lightly constricted at the septa, hyaline, smooth-walled. Asexual morph:Conidiomatapycnidial, solitary, partly immersed in host tissue, uniloculate, multilocular or convoluted, dark blue (Lamproconium), dark blackish brown (Hercospora), erumpent in the centre.Pycnidiumthick-walled, thin at inner layer, hyaline (Lamproconium), dark brown (Hercospora), comprising wall cells oftextura angularis(Lamproconium) ortextura intricate(Hercospora).Ostioleabsent, dehiscence irregular.Paraphysesinterspersed within conidiophores.Conidiophoresfiliform or cylindrical, pale-bluish or hyaline, septate, branched, smooth-walled, formed at the base of conidiomatal wall.Conidiogenous cellsholoblastic, cylindrical to subcylindrical, each forming a single conidium at the conidiophore apex, or annellidic, colourless to olivaceous, smooth-walled.Conidiafusiform, ellipsoid, thick- walled, with granular, contents granular, aseptate, bluish to glistening dark blue (Lamproconium), hyaline (Hercospora), smooth-walled, produced in mucilage but without a distinct mucilaginous envelope or appendage (adapted from Norphanphoun et al. 2016).

Type genus –Lamproconium(Grove) Grove

Notes – Lamproconiaceae was established by Norphanphoun et al. (2016) to accommodateLamproconiumandHercospora, based on morphology and phylogenetic analyses. Lamproconiaceae forms a robust clade basal to Sydowiellaceae and Stilbosporaceae in the combined ITS and LSU phylogeny and the conidia differ from those of Sydowiellaceae and Stilbosporaceae (Norphanphoun et al. 2016, Senanayake et al. 2017b).

Genera