Two new species of <i>Steccherinum</i> (<i>Polyporales</i>, <i>Basidiomycota</i>) from southern China based on morphology and DNA sequence data

Abstract

Steccherinum Gray (Steccherinaceae, Polyporales), typi ed with S. ochraceum (Pers. ex J.F. Gmel.) Gray, was originally described by Gray (1821), and it is characterized by resupinate to e used-reexed or pileate basidiomes with a membranaceous consistency and odontioid to hydnoid hymenophore. Microscopically, it presents a monomitic or dimitic hyphal system with clamped or simple-septate generative hyphae, some characteristically encrusted at the apices, numerous pseudocystidia, subclavate to clavate basidia and basidiospores that are colourless, thin-walled, smooth, ellipsoid to subcylindrical, acyanophilous and negative to Melzer's reagent (Gray, 1821;Bernicchia & Gorjón, 2010).So far, about 75 species have been accepted in the genus worldwide (

A phylogenetic and taxonomic study on Steccherinum (Polyporales, Basidiomycota): Focusing on three new Steccherinum species from southern China

“…Steccherinum punctatum is similar to S. hydneum Rick ex Maas Geest., S. tenuispinum and S. yunnanense in having leathery hymenophore. However, S. hydneum differs from S. punctatum by its longer aculei (2-3 mm) and wider basidiospores (4.2-5.0 × 3.6-4.1 µm; Yuan and Dai, 2005b); S. tenuispinum differs from S. punctatum in having whitish to dirty-ochraceous hymenial surface and narrower basidia (12-24 × 3.5-4.8 µm;Spirin et al, 2007); S. yunnanense differs in its fimbriate margin and shorter basidia (10.5-15 × 5-6 µm;Dong et al, 2022). Steccherinum punctatum resembles S. aggregatum Hjortstam & Spooner, S. fragile and S. xanthum in having a monomitic hyphal system.…”

“…Fr. was used as an outgroup in the ITS+nLSU analysis in the genus Steccherinum ( Figure 2 ) ( Dong et al., 2022 ).…”

“…It is a cosmopolitan genus characterized by a combination of resupinate to effused-reflexed or pileate basidiome with a membranaceous consistencey, hymenophore odontioid to hydnoid, a dimitic hyphal structure with clamp connections or simple-septate generative hyphae, cystidia numerous, strongly encrusted in the obtuse apex, basidia subclavate and basidiospores hyaline, thin-walled, smooth, ellipsoid to subcylindrical, acyanophilous and negative in Melzer’s reagent ( Fries, 1821 ; Gray, 1821 ; Bernicchia and Gorjón, 2010 ). So far, about 80 species have been accepted in this genus worldwide ( Fries, 1821 ; Banker, 1906 ; Banker, 1912 ; Cunningham, 1958 ; Snell and Dick, 1958 ; Lindsey and Gilbertson, 1977 ; Ryvarden, 1978 ; Lindsey and Gilbertson, 1979 ; Burdsall and Nakasone, 1981 ; Melo, 1995 ; Legon and Roberts, 2002 ; Yuan and Dai, 2005a ; Spirin et al., 2007 ; Hjortstam and Ryvarden, 2008 ; Bernicchia and Gorjón, 2010 ; Miettinen et al., 2012 ; Yuan and Wu, 2012 ; Miettinen and Ryvarden, 2016 ; Westphalen et al., 2018 ; Liu and Dai, 2021 ; Westphalen et al., 2021 ; Wu et al., 2021a ; Wu et al., 2021b ; Dong et al., 2022 ). In recent years, several new Steccherinum species were described in China, S. fragile Z.B.…”

“…In recent years, several new Steccherinum species were described in China, S. fragile Z.B. Liu (Liu and Dai, 2021;Wu et al, 2021a;Wu et al, 2021b;Dong et al, 2022).…”

A phylogenetic and taxonomic study on Steccherinum (Polyporales, Basidiomycota): Focusing on three new Steccherinum species from southern China

“…It is a cosmopolitan genus characterized by a combination of resupinate to effused-reflexed or pileate basidiome with a membranaceous consistencey, hymenophore odontioid to hydnoid, a dimitic hyphal structure with clamp connections or simple-septate generative hyphae, cystidia numerous, strongly encrusted in the obtuse apex, basidia subclavate and basidiospores hyaline, thin-walled, smooth, ellipsoid to subcylindrical, acyanophilous and negative in Melzer's reagent (Fries, 1821;Gray, 1821;Bernicchia and Gorjoń, 2010). So far, about 80 species have been accepted in this genus worldwide (Fries, 1821;Banker, 1906;Banker, 1912;Cunningham, 1958;Snell and Dick, 1958;Lindsey and Gilbertson, 1977;Ryvarden, 1978;Lindsey and Gilbertson, 1979;Burdsall and Nakasone, 1981;Melo, 1995;Legon and Roberts, 2002;Yuan and Dai, 2005a;Spirin et al, 2007;Hjortstam and Ryvarden, 2008;Bernicchia and Gorjoń, 2010;Miettinen et al, 2012;Yuan and Wu, 2012;Miettinen and Ryvarden, 2016;Westphalen et al, 2018;Liu and Dai, 2021;Westphalen et al, 2021;Wu et al, 2021a;Wu et al, 2021b;Dong et al, 2022). In recent years, several new Steccherinum species were described in China, S. fragile Z.B.…”