Perenniporia rosicola Y.C. Dai, Yuan Yuan & Chao G. Wang, 2024
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publication ID |
https://dx.doi.org/10.3897/mycokeys.105.121858 |
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persistent identifier |
https://treatment.plazi.org/id/1F1D717F-01AC-587D-9899-AB3F819BF8CB |
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treatment provided by |
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scientific name |
Perenniporia rosicola Y.C. Dai, Yuan Yuan & Chao G. Wang |
| status |
sp. nov. |
Perenniporia rosicola Y.C. Dai, Yuan Yuan & Chao G. Wang sp. nov.
Figs 4 View Figure 4 , 5 View Figure 5
Holotype.
China. Yunnan Province, Mengla County, Xishuangbanna Rainforest Valley, on branch of Rosaceae , 4.VII.2021, Y.C. Dai 22563 (BJFC037137).
Etymology.
Rosicola (Lat.): refers to the species growing on Rosaceae .
Description.
Basidiomata. Annual, resupinate, soft corky, without odour or taste when fresh, becoming corky when dry, up to 2 cm long, 1.5 cm wide and 1.2 mm thick at centre. Pore surface white when fresh, becoming pale orange brown upon bruising, eventually honey yellow to clay buff upon drying; sterile margin white when fresh, becoming cream upon drying, up to 0.5 mm wide; pores round, sometimes elongated, 5-7 per mm; dissepiments thin, entire to slightly lacerate. Subiculum very thin, cream, corky, up to 0.2 mm thick. Tubes concolorous with pore surface, corky, up to 1 mm long.
Hyphal structure. Hyphal system dimitic; generative hyphae bearing clamp connections; skeletal hyphae dextrinoid, weakly CB+; tissues becoming pale olivaceous in KOH.
Subiculum. Generative hyphae infrequent, hyaline, thin-walled, occasionally branched, straight, 2-2.5 μm in diam.; skeletal hyphae dominant, hyaline, thick-walled with a medium to narrow lumen, frequently arboriform branched, flexuous, interwoven, 1.5-2.5 μm in diam.
Tubes. Generative hyphae infrequent, hyaline, thin-walled, more or less flexuous, 2-2.5 μm in diam.; skeletal hyphae dominant, hyaline, thick-walled with a medium lumen, frequently arboriform branched, flexuous, interwoven, 1.5-2.5 μm in diam. Hymenial cystidia absent; cystidioles present, ventricose to fusiform, hyaline, thin-walled, 14-16 × 5-5.5 μm. Basidia barrel-shaped, with four sterigmata and a basal clamp connection, 16-20 × 7-8 μm; basidioles in shape similar to basidia, but smaller. Irregular crystals present amongst hymenia. Dendrohyphidia present.
Spores. Basidiospores broadly ellipsoid to subglobose, hyaline, thick-walled, smooth, sometimes with a medium guttule, dextrinoid, weakly CB+, 5-5.8(-6) × 4-5.2(-5.3) µm, L = 5.39 μm, W = 4.74 μm, Q = 1.14 (n = 30/1).
Type of rot. White rot.
Notes.
Perenniporia rosicola is characterised by annual and resupinate basidiomata with a white pore surface when fresh, round to sometimes elongated pores of 5-7 per mm, frequently arboriform branched and narrow skeletal hyphae, the presence of dendrohyphidia, broadly ellipsoid to subglobose, thick-walled basidiospores measuring 5-5.8 × 4-5.2 μm and growth on Rosaceae in southwest China.
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