Xylodon fissuratus C.L. Zhao, 2023

Guan, Qian-Xin, Huang, Jing, Huang, Jian & Zhao, Chang-Lin, 2023, Five new species of Schizoporaceae (Basidiomycota, Hymenochaetales) from East Asia, MycoKeys 96, pp. 25-56 : 25

Xylodon fissuratus C.L. Zhao sp. nov.

Figs 10 , 11

Type material.

Holotype. China. Yunnan Province, Puer, Jingdong County, the Forest of Pineapple, 24°21'32"N, 100°48'12"E, altitude 2110 m a.s.l., on fallen angiosperm branch, leg. C.L. Zhao, 4 January 2019, CLZhao 9407 (SWFC).

Etymology.

Fissuratus (Lat.): referring to the cracking hymenial surface.

Description.

Basidiomata annual, resupinate, adnate, coriaceous, without odor or taste when fresh, up to 12 cm long, 2.5 cm wide, and 150 µm thick. Hymenial surface grandinioid, and white when fresh, white to slightly cream on drying, cracking. Sterile margin indistinct, white, and up to 1 mm wide.

Hyphal system monomitic, generative hyphae with clamp connections, colorless, thin-walled, frequently branched, interwoven, 2-3 µm in diameter; IKI-, CB-, tissues unchanged in KOH.

Cystidia capitate, thin-walled, smooth, slightly constricted at the neck, with a globose tip, 11.5-16.5 × 3-4.5 µm; basidia clavate to subcylindrical, slightly constricted in the middle to somewhat sinuous, with four sterigmata and a basal clamp connection, 10.5-16.5 × 2-4 µm.

Basidiospores ellipsoid, colorless, thin-walled, smooth, IKI-, CB-, 4-5 × 3-4 µm, L = 4.44 µm, W = 3.4 µm, Q = 1.3 (n = 30/1).

Additional specimen examined

(paratype). China. Yunnan Province, Chuxiong, Zixishan Forestry Park, 25°01'26"N, 101°24'37"E, altitude 2313 m a.s.l., on fallen angiosperm branch, leg. C.L. Zhao, 1 July 2018, CLZhao 7007 (SWFC).

Figures

Figure 10. Basidiomata of Xylodon fissuratus (holotype). Scale bars: 2 cm (A); 1 mm (B).

Figure 11. Microscopic structures of Xylodon fissuratus (holotype) A basidiospores B basidia and basidioles C capitate cystidia D a section of hymenium. Scale bars: 5 µm (A); 10 µm (B-D).