Parasterinopsis
Parasterinopsis Bat., Atas Inst. Micol. Univ. Recife 1: 327 (1960).
Index Fungorum number: IF 3722; Facesoffungi number: FoF 06739, 3 morphological species (Species Fungorum 2022), no molecular data available.
Epiphytes on surface of leaves. Superficial hyphae abundant, superficial, light brown, septate, branching and spreading over the host surface. Appressoria lateral, two-celled narrowly ovate. Sexual morph: Thyriothecia superficial, scattered, black, opening by huge irregular fissure when wet, with basal peridium poorly developed. Upper wall composed of dark to brown filaments at the outer rim, which radiate towards the rim. Hamathecium filamentous, branched pseudoparaphyses and vertically arranged asci. Asci 8-spored, bitunicate, oblong, apedicellate, lacking an ocular chamber, not staining blue in IKI. Ascospores fasciculate, cylindrical, hyaline to brown, 1–4-septate, constricted at the septa, with upper cell larger and broadly rounded. Asexual morph: Unknown (adapted from Hongsanan et al. 2014).
Type species: Parasterinopsis sersalisiae (Hansf.) Bat.
Notes: Parasterinopsis is characterised by superficial hyphae, two-celled narrowly ovate appressoria, superficial, scattered, black thyriothecia, oblong, apedicellate asci lacking an ocular chamber and fasciculate, cylindrical, hyaline to brown, 1–4-septate ascospores. Hongsanan et al. (2014) accepted Parasterinopsis in Asterinaceae based on its thyriothecia exposed by an irregular fissure and superficial hyphae with appressoria. Parasterinopsis resembles Schenckiella in having cylindrical ascospores but the latter lacks appressoria. Molecular data is lacking for Parasterinopsis. Fresh collections with DNA sequence data are needed to confirm the taxonomic placement of the genus.
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