Scytinostroma bambusinum X. H. Ji, 2024

Ji, Xiao-Hong, Sun, Bin, He, Gang & Sun, Qi-Biao, 2024, Scytinostroma bambusinum sp. nov. (Russulales, Basidiomycota) in China evidenced by morphological characteristics and phylogenetic analyses, Biodiversity Data Journal 12, pp. e 115975-e 115975 : e115975-

Scytinostroma bambusinum X. H. Ji sp. nov.

Materials

Type status: Holotype. Occurrence: recordNumber: JXH 596; recordedBy: Ji Xiao-Hong; individualCount: 1; occurrenceID: F8ECA17A-1B7D-52C8-8C7D-855EE065E847; Taxon: scientificName: Scytinostroma bambusinum ; acceptedNameUsage: Scytinostroma bambusinum X. H. Ji, 2023 , sp. nov.; parentNameUsage: Scytinostroma Donk 1956 ; kingdom: Fungi; phylum: Basidiomycota; class: Agaricomycetes; order: Russulales ; family: Peniophoraceae ; genus: Scytinostroma ; specificEpithet: bambusinum ; taxonRank: species; verbatimTaxonRank: species; scientificNameAuthorship: X. H. Ji; Location: continent: Asia; country: China; stateProvince: Jiangxi; municipality: Ji'an; locality: Jinggangshan, Ji'an, Jiangxi Province, China ; verbatimElevation: 918 m; locationRemarks: label transliteration: " Jiangxi, Ji'an, Jinggangshan, 16 / 05 / 2023, Ji Xiaohong "; [江西吉安井冈山, 16 / 05 / 2023, 季晓红]; georeferenceProtocol: label; Identification: identifiedBy: Ji Xiaohong; dateIdentified: 2023; Event: samplingProtocol: collecting; eventDate: 16 / 05 / 2023; Record Level: language: en; institutionCode: the Herbarium of Jiujiang Training Collega (JJTC); collectionCode: Fungi; ownerInstitutionCode: the Herbarium of Jiujiang Training Collega (JJTC); basisOfRecord: PreservedSpecimen

Type status: Isotype. Occurrence: recordNumber: JXH 643; recordedBy: Ji Xiao-Hong; individualCount: 1; occurrenceID: 11545F7B-1F13-5002-8465-26139F26B467; Taxon: scientificName: Scytinostroma bambusinum ; acceptedNameUsage: Scytinostroma bambusinum X. H. Ji, 2023 , sp. nov.; parentNameUsage: Scytinostroma Donk 1956 ; kingdom: Fungi; phylum: Basidiomycota; class: Agaricomycetes; order: Russulales ; family: Peniophoraceae ; genus: Scytinostroma ; specificEpithet: bambusinum ; taxonRank: species; verbatimTaxonRank: species; scientificNameAuthorship: X. H. Ji; Location: continent: Asia; country: China; stateProvince: Jiangxi; municipality: Ji'an; locality: Jinggangshan, Ji'an, Jiangxi Province, China ; verbatimElevation: 856 m; locationRemarks: label transliteration: " Jiangxi, Ji'an, Jinggangshan, 17 / 05 / 2023, Ji Xiaohong "; [江西吉安井冈山, 2023.05. 17, 季晓红]; georeferenceProtocol: label; Identification: identifiedBy: Ji Xiaohong; dateIdentified: 2023; Event: samplingProtocol: collecting; eventDate: 17 / 05 / 2023; Record Level: language: en; institutionCode: the Herbarium of Jiujiang Training Collega (JJTC); collectionCode: Fungi; ownerInstitutionCode: the Herbarium of Jiujiang Training Collega (JJTC); basisOfRecord: PreservedSpecimen

Description

Basidiomata (Fig. 1 ) — Annual, resupinate, coriaceous, not separable from substrate, up to 30 cm long, 4 cm wide and less than 0.3 mm thick at centre. Hymenial surface smooth to tuberculate, white to cream when fresh, cream upon drying; margin concolorous with hymenial surface, thinning out and adnate.

Hyphal structure — Hyphal system dimitic; generative hyphae simple septate, hyaline, thin-walled, rarely branched, 1.5–3 µm in diameter, IKI –, CB –; tissues unchanged in KOH; skeletal hyphae dominant, frequently branched, interwoven, thick-walled, 2–3.5 µm in diameter, cyanophilous.

Hymenium — Cystidia absent; cystidioles present, clavate, some gradually tapering to the apex, thin-walled, hyaline, smooth, 24–28 × 3–5 µm; basidia clavate, with a basal simple septum and four sterigmata, thin-walled, smooth, 20–25 × 5–8 µm; basidioles similar to basidia in shape, but slightly smaller.

Spores — Basidiospores broadly ellipsoid with an apiculus, hyaline, thin-walled, smooth, occasionally with one guttule, amyloid, acyanophilous, (5.3 –) 5.5–7 (– 7.3) × 4–5.3 (– 5.5) µm, L = 6.00 µm, W = 4.57 µm, Q = 1.28–1.31 (n = 60 / 1) (Fig. 2 ).

Etymology

Bambusinum (Lat.): refers to the species growing on dead bamboo.

Figures

Figure 1. Basidiome of Scytinostroma bambusinum (JXH 596). Scale bar: 1 cm.

Figure 2. Microscopic structures of Scytinostroma bambusinum (Holotype). A Basidiospores; B Basidioles; C Basidia; D Cystidioles; E S ection of basidiome. Scale bars: 10 μm.