Picipes wuyishanensis B.K. Cui, Xing Ji & J.L. Zhou, sp. nov.
MycoBank number: MB 559401; Index Fungorum number: IF 559401; Facesoffungi number: FoF 10649;
Description
Basidiomata – Annual, laterally stipitate, solitary, hard corky when dry. Pilei semicircular, projecting up to 2.9 cm long, 3.9 cm wide and 6 mm thick at base. Pileal surface buff towards the stipe and darker towards the margin when dry, glabrous; margin brownish red to black, with radially aligned stripes, straight. Pore surface beige grey to pearl beige when dry; pores angular, 3–5 per mm; dissepiments thin, entire. Context buff to buff yellow when dry, hard corky, up to 3 mm thick. Tubes concolorous with pore surface, up to 4 mm thick. Stipe short, concolorous with the pileal surface, bearing a black cuticle at the base, up to 5 mm long and 1 cm in diam.
Hyphal structure – Hyphal system dimitic; generative hyphae bearing clamp connections; skeleto-binding hyphae IKI–, slightly CB+; tissues unchanged in KOH.
Context – Generative hyphae infrequent, colorless, thin-walled, occasionally branched, 2–6.5 μm in diam; skeleto-binding hyphae dominant, colorless, thick-walled with a narrow lumen to solid, frequently branched, strongly interwoven, 1.3–7.4 μm in diam.
Tubes – Generative hyphae infrequent, colorless, thin-walled, occasionally branched, 2–4.2 μm in diam; skeleto-binding hyphae dominant, colorless, thick-walled with a narrow lumen to solid, with dendroid branches, strongly interwoven, 1.5–5.5 μm in diam. Cystidia absent; cystidioles frequent, subulate, 12.3–24 × 4–6.9 μm. Basidia infrequent, oblong to clavate, with a basal clamp connection and four sterigmata, 11–14.5 × 6.2–8.9 μm; basidioles in shape similar to basidia, but slightly smaller.
Stipe – Generative hyphae infrequent, colorless, thin-walled, occasionally branched, 2.5–5 μm in diam; skeleto-binding hyphae dominant, colorless, thick-walled with a wide to narrow lumen, frequently branched, strongly interwoven, 1.5–4.8 μm in diam. Hyphae in cuticle with brown inclusion inside, slightly thick-walled with a wide lumen, simple-septate, 2.2–5.4 μm in diam.
Basidiospores – Basidiospores cylindrical, colorless, thin-walled, smooth, frequently bearing two guttules, IKI–, CB–, (5.6–)6–6.9(–7.4) × (2.4–)2.5–3(−3.4) μm, L = 6.42 ± 0.37 μm, W = 2.76 ± 0.2 μm, Q = 2–2.77, Qm = 2.33 ± 0.17 (n=72/2).
Material examined: CHINA, on dead angiosperm tree, 22 October 2005, Y.C. Dai, Dai 7409 (IFP, holotype).
Distribution: Subtropical regions of China.
Sequence data: Dai 7409: ITS: KX900061.1 (ITS4/ITS5); LSU: KX900177.1 (LROR/LR7); nSSU: KX900287.1 (PNS1/NS41); mtSSU: KX900243.1 (MS1/MS2); EF1a: KX900364.1 (983/1567R)
Fig. 2–C Basidiomata of Picipes wuyishanensis (Dai 7409). Scale bars: 1 cm. Fig. 9 Microscopic structures of Picipes wuyishanensis. (A): Basidiospores; (B): Basidia and basidioles; (C): Cystidioles; (D): Hyphae from context; (E): Hyphae from trama; (F): Hyphae from stipe. Scale bars: A-F = 10 μm.
Fig. 2
Fig. 9