Parastigmatea
Parastigmatea Doidge, Bothalia 1(1): 22 (1921).
Index Fungorum number: IF 3723; Facesoffungi number: FoF 06494, 7 morphological species (Species Fungorum 2022), no molecular data available.
Saprobic on host. Sexual morph: Ascomata epiphyllous, minute, dull black, punctiform, circular, discrete, but in small groups on main and lateral veins, smooth, remaining covered by the cuticle. Basal membrane brown, composed of concentric layers of compressed hyphae. Covering membrane radial in structure, composed of sinuous hyphae, arched in centre, flat at edges, dehiscing by a circular central pore, central cavity containing asci. Asci paraphysate, ovate or broadly ellipsoid, thick walled, 8-spored. Ascospores distichous or conglobate, hyaline, sub-clavate or somewhat piriform, rounded at both ends, continuous. Asexual morph: Unknown (adapted from Doidge 1921).
Type species: Parastigmatea nervisita Doidge
Notes: Parastigmatea is characterised by globose, orbicular or slightly elongated stromata, saccate, 8-spored asci and hyaline, distichous ellipsoid ascospores. Lumbsch and Huhndorf (2010), Hyde et al. (2013) and Wijayawardene et al. (2018) accepted Parastigmatea in Polystomellaceae. Parastigmatea is a distinct genus in Polystomellaceae but lacks sequence data. Fresh collections with DNA sequence data are needed to confirm the systematic position of Parastigmatea.
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