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All Fungi
Paranectria oropensis
Nomenclature
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Family: BionectriaceaeGenus: Paranectria
SUMMARY
Anamorph. not known.
Teleomorph: stromata absent. Ascomata 250–400 µm diam. and 210–300 µm tall, solitary or in small clusters, superficial, subglobose, yellow-orange to pinkish, loosely attached to the substratum by a sparse white hyphal subiculum, with a sometimes conspicuous bright red pointed papillate apex, not changing colour in KOH; peridium 20–25 µm thick, rough-walled, covered with a dense layer of thick-walled hyphae 2.5–3·5 µm diam., composed of an outer layer of angular to elongate thick-walled cells, and an inner layer of colourless, thin-walled elongate cells, the ostiole surrounded by radially arranged yellowish thin-walled hyphae 20–30 µm long and ca 2 µm diam., merging into similar colourless thin-walled apical paraphyses extending from the internal ostiolar wall. Interascal tissue absent. Asci 95–130 × 20–27 µm, clavate with a short tapering stalk, thin-walled, not fissitunicate, the apex obtuse to rounded, without a clearly defined apical structure, 8-spored. Ascospores arranged biseriately and obliquely, 25·5–29 × 9–12·5 µm [(22–) 25–32 (–36) × (9–) 11–14 (–15) µm fide Hawksworth 1982], fusiform, colourless to pale yellow, smooth, muriform with 3–5 narrow transverse septa with each segment subdivided by 1–2 longitudinal septa, the septa sometimes oblique, thin-walled, with the apices attenuated into cellular ± curved appendages 4–8 (–12) µm long and ca 1 µm diam.