Skvortzoviella lenis
Skvortzoviella lenis Jia Yu, Xue W. Wang, S.L. Liu & L.W. Zhou 2021, in Yu et al., IMA fungus, 12(1), 19 (2021).
Current name: Schizocorticium lene (Jia Yu, X.Wei Wang, S.L. Liu & L.W. Zhou) L.W. Zhou [as 'lenis'], in Wang, Liu & Zhou 2023
Etymology: lenis (Lat.), refers to the smooth hymenium.
Diagnosis: Similar to Skvortzovia georgica in the smooth hymenium, but S. georgica has slightly larger leptocystidia (30–32 × 4–5 μm) and allantoid basidiospores (Gruhn & Hallenberg 2018).
Description: Basidiomes annual, closely adnate, widely effused, not easily separable, thin, membranous, rarely soft, usually with a few broad cracks or cracked extensively, 50–100 μm thick. Hymenophore smooth or irregular, white to cream when fresh, pale yellow to buff-yellow with age. Subiculum not stratified, white when fresh, light cream-coloured in dried material. Margin gradually thinning out, white, filamentose.
Hyphal system monomitic, generative hyphae with clamp connections. Subiculum composed of indistinct generative hyphae; subicular hyphae hyaline, thin–walled, frequently branched, 2–2.5 μm diam. Subhymenial hyphae hyaline, frequently branched, compact and agglutinated, 1.5–2.0 μm diam. Hymenial leptocystidia tubular with obtuse apices, hyaline, thin-walled, with a basal clamp connection, 15–30 × 1.5–3 μm. Basidia cylindrical, often with a median constriction, four sterigmata, 12–20 × 4.7–6 μm, tapering to 2.5– 3.5 μm diam with a clamp connection at base; basidioles similar in shape to basidia, but smaller. Basidiospores ellipsoid, hyaline, smooth, thin–walled, acyanophilous, non-amyloid, non-dextrinoid, 4.8–5.8(− 6.0) × (2.8–)2.9–3.5 μm, L = 5.1 μm, W= 3.1 μm, Q = 1.62–1.67 (n = 90/3).
Index Fungorum Number: IF840232
Figure 1. Basidiomes of Skvortzoviella lenis. a, b LWZ 20180921-17(holotype). c LWZ 20180921-32 (paratype). d LWZ 20180921-25 (paratype). e LWZ 20180922-39 (paratype). f LWZ 20180922-61 (paratype). Scale bars: a = 5 mm; b = 5 cm; c–f = 3 cm (Yu et al., 2021).
Figure 2. Microscopic structures of Skvortzoviella lenis (drawn from holotype). a basidiospores. b basidia and basidioles. c leptocystidia. d a section of hymenial and subhymenial layer. Scale bar = 10 μm (Yu et al., 2021).
References:
Gruhn, G., & Hallenberg, N. (2018). Au sujet du genre Skvortzovia (Basidiomycota, Hymenochaetales). Bulletin Mycologique et Botanique Dauphiné-Savoie, 231, 5-13.
Yu, J., Wang, X. W., Liu, S. L., Shen, S., & Zhou, L. W. (2021). Taxonomy and phylogeny of Resinicium sensu lato from Asia-Pacific revealing a new genus and five new species (Hymenochaetales, Basidiomycota). IMA fungus, 12(1), 19.
Recent Genus
ResiniciumRepetobasidiopsis
Repetobasidiellum
Recent Species
Skvortzoviella lenisBurgella flavoparmeliae
Metacampanella dendrophora