Barriopsis
Barriopsis A.J.L. Phillips, A. Alves & Crous, in Phillips et al., Persoonia 21: 39 (2008).
Index Fungorum number: IF 511712; Facesoffungi number: FoF 01679, 6 morphological species (Species Fungorum 2022), 6 species with molecular data.
Saprobic on dead twigs. Sexual morph: Ascostromata brown to black, immersed, aggregated or in clusters, scattered, erumpent at maturity, discoid to pulvinate or hemisphaerical, discrete, multiloculate. Ostiole central. Pseudoparaphyses hyphae-like, septate, embedded in gelatinous matrix. Asci 8–spored, bitunicate, clavate to sub-clavate, short stalked. Ascospores biseriate, brown to dark brown, aseptate, ellipsoid-oval, inequilateral, slightly curved, widest in the median to supramedian, smooth or verrucose, without sheath. Asexual morph: Lasiodiplodia-like: Conidiomata stromatic, pycnidial, superficial, dark brown to black, multilocular, individual or aggregated, thick-walled, ostiolate. Ostiole central, circular, non-papillate. Paraphyses hyaline, thin-walled, usually aseptate, constricted at the septa, occasionally branched. Conidiogenous cells holoblastic, hyaline, thin-walled, cylindrical, with visible periclinal thickening. Conidia initially hyaline, oval, both ends broadly rounded, thick-walled, aseptate with longitudinal striations, striations visible on hyaline conidia even while attached to conidiogenous cells, becoming brown, aseptate or 1–3-septate, with prominent longitudinal striations (adapted from Liu et al. 2012, asexual morph description follows Stevens 1926, Abdollahzadeh et al. 2009).
Type species: Barriopsis stevensiana A.J.L. Phillips & Pennycook
Notes: Barriopsis fusca was previously known as Physalospora fusca and B. fusca is nom. illegit. According to Hongsanan et al. (2020b), the type species of Barriopsis is B. stevensiana. Barriopsis is characterised by brown, aseptate ascospores, which are lighter in the centre, lacking apiculi and with a Lasiodiplodia-like asexual morph. The conidia are at first hyaline, aseptate and thick-walled becoming dark brown and septate with irregular longitudinal striations (Stevens 1926). Phillips et al. (2008) confirmed the placement of Barriopsis in Botryosphaeriaceae. Molecular markers available for Barriopsis are ITS, LSU, SSU, BTUB, RPB2 and TEF-1.
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