Phylloporia moricola Sheng H. Wu

Wu, Sheng-Hua, Chang, Chiung-Chih, Wei, Chia-Ling & Jiang, Guo-Zheng, 2021, Phylloporia moricola sp. nov. (Hymenochaetales, Basidiomycota) from China, Phytotaxa 501 (1), pp. 181-188 : 182-185

Phylloporia moricola Sheng H. Wu ( Figs. 2 , 3 )

Diagnosis:—This new species grows on the trunk of living Morus sp. , and is characterised by effused-reflexed to pileate basidiocarps,

pores 7–9 per mm, duplex context with a black line in youth, and a dimitic hyphal system. Name registration: Phylloporia moricola (IF558160) . Type:— CHINA. Sichuan Province, Xichang City, Puge County, Luojishan , 30° 6’ 17” N, 102° 9’ 28” E, elev., 2,500 m coll . G.Z. Jiang,

25 July 2018, on living trunk of Morus sp. , Wu 1807-1 ( TNM F0034325 , holotype) .

Etymology:—Refers to the Morus sp. host.

Description:— Basidiocarps perennial, effused-reflexed to pileate, applanate, sessile, woody hard. Pilei projecting 1–4cm long, up to 20 cm wide and up to 2 cm thick. Pileal surface dark brown to blackish brown, glabrous, concentrically sulcate with narrow zones (about 4 per cm); margin acute, yellowish brown. Pore surface brownish yellow, darkening in KOH, pores 7–9 per mm, circular; dissepiments fairly thick, entire. Context woody hard, duplex, with a black line in youth, then merged into dark upper context, the upper context dark brown to blackish brown, about 2 mm thick, the lower context yellowish brown, up to 2 mm thick. Tubes woody hard, concolorous with the lower context, up to 15 mm thick.

Hyphal system dimitic, tissue darkening in KOH. Context generative hyphae brownish to almost colorless, moderately branched, 2–3 μm in diam, slightly thick-to thick-walled, walls up to 1 μm in diam; skeletal hyphae brownish, fairly straight, rarely branched, 2.2–3.5 μm in diam, thick-walled to subsolid, walls up to 1.2 μm in diam. Tube generative hyphae brownish to almost colorless, moderately branched, 1.5–2.5 μm in diam, slightly thick-to thick-walled, walls up to 0.5 μm in diam; skeletal hyphae brownish, fairly straight, rarely unbranched, 2.5–4 μm in diam, thick-walled to subsolid, walls up to 1.5 μm in diam. Setae absent. Cystidioles absent. Basidia clavate to barrelshaped, 8–10 × 4.5–5 μm, 4-sterigmate. Basidiospores broadly ellipsoid, occasionally ellipsoid, brownish, slightly thick-walled, smooth, inamyloid, nondextrinoid, acyanophilous, generally 3.4–4 × 2.7–3.2 μm.

Statistical measurements of basidiospores. (3.2–)3.5–4 × (2.5–)2.8–3.1(–3.3) μm, L = 3.73 μm, W = 2.96 μm, Q = 1.26 (n = 30) (holotype, Wu 1807-1).

Ecology and distribution:— On trunk of living Morus sp. Known from Sichuan Province of China. Additional specimens examined (paratypes):— CHINA. Sichuan Province, Xichang City , Puge County, Luojishan, 30° 6’ 17” N, 102° 9’ 28” E, elev. 2,500 m, coll. G. Z . Jiang , 25 July 2018, on trunk of living Morus sp , Wu 1807-5 ( TNM F0034326 ), Wu 1807-6 ( TNM F0034327 ), Wu 1807-11 ( TNM F0034328 ) .

Figures

FIGURE 2. Basidiocarps of Phylloporia moricola (Wu 1807-1) A. Pileal surface. B. Hymenial surface. (scale bar = 1 cm). Photos by: Chia-Ling Wei.

FIGURE 3. Phylloporia moricola (Wu 1807-1) A. Skeletal hyphae from context. B. Generative hyphae from context. C. Skeletal hyphae from trama. D. Generative hyphae from trama. E. Basidia and basidiole. F. Basidiospores (scale bar = 10 μm). Drawings by: Chia-Ling Wei.