Lecideopsella Höhn., Sber. Akad. Wiss. Wien, Math. -naturw. Kl., Abt. 1 118: 1229 (1909).
Index Fungorum number: IF 2697; Facesoffungi number: FoF 01936, 4 morphological species (Species Fungorum 2022), no molecular data available.
Epiphytic on upper and lower surfaces of leaves on various flowering plants. Sexual morph: Ascostromata scattered, gregarious, superficial, easily dispersed, visible as flattened, dark grey spots on the host surface, plane-scutate, uni-loculate, which is a ‘cell’ in a network-like structure, glabrous, membranous, lacking ostioles. Peridium thin-walled, delicate, thinner towards the apex, poorly-developed at the base, composed of light brown, membranous cells. Asci 8-spored, bitunicate, globose to obovoid, with slightly short-curved pedicel or sessile, apically rounded, thick-walled at the apex. Ascospores overlapping, lying parallel, irregularly-seriate, hyaline to pale yellowish, oblong, 1-septate, slightly constricted at the septum, smooth-walled. Asexual morph: Unknown (adapted from Höhnel 1909b).
Type species: Lecideopsella gelatinosa Höhn.
Notes: Lecideopsella has an epifoliar lifestyle. Lecideopsella morphologically resembles Henningsiella, Lecideopsis, Leptophyma and Phillipsiella but differs in having plane-scutate ascomata, typically superficial on the host and does not turn blue when stained in iodine (Rehm 1895, Höhnel 1909). Arx and Müller (1975) treated Leptophyma as a synonym of Lecideopsella and placed it in Schizothyriaceae. This taxonomic placement was followed by several authors (Hawksworth et al. 1983; Eriksson and Hawksworth 1985). Lecideopsella was reinstated by Eriksson and Hawksworth (1987) and was accommodated in Schizothyriaceae. Since then, Lecideopsella was placed in Schizothyriaceae by several mycologists (Eriksson and Hawksworth 1987; Kirk et al. 2001, 2008; Lumbsch and Huhndorf 2010; Hyde et al. 2013; Wijayawardene et al. 2014; Hongsanan et al. 2020a).
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