Conferticium fissuratum X. Yang & C.L. Zhao, 2024

Shen, Lulu, Wang, Kunyan, Xia, Hui, Liu, Shiling, Yao, Lu & Yang, Xin, 2024, Molecular phylogeny and morphology reveal a new wood-inhabiting fungal species of Conferticium (Stereaceae, Basidiomycota) from southwest China, Phytotaxa 677 (1), pp. 77-86 : 82

Conferticium fissuratum X. Yang & C.L. Zhao , sp. nov. Figs. 2 , 3 .

MycoBank no.: MB 855449

Etymology: — fissuratum (Lat.) refers to the cracking hymenophore of the holotype.

Holotype: — CHINA. Yunnan Province, Diqing, Weixi County, Zhonglu Town, Lagaluo Village , 27°16′39′′N, 99°13′75′E, elev. 2500 m a.s.l., on the fallen angiosperm branch, leg. C.L. Zhao, 14 October 2023, CLZhao 34662 ( SWFC!) .

Fruiting body: — Basidiomata annual, membranous, resupinate, adnate, brittle. without odor and taste when fresh, up to 7.5 cm long, 1.5 cm wide, and 2.0 mm thick. Hymenophore surface tuberculate, rough, white to cream when fresh, buff to yellowish-brown upon drying, cracking. Sterile margin indistinct, slightly white, and 0.5 mm wide.

Hyphal structure:— Monomitic; generative hyphae bearing simple-septa, colorless, thin-walled, occasionally branched, smooth, more or less regularly arranged, 2.5–3.5 μm in diam, IKI-, CB-, tissues unchanged in KOH. Subiculum composed of a basal layer and a medullary layer, basal layer usually with dense texture encrusted with crystals. Crystals usually present bipyramidic, aggregated. Cystidia subcylindrical, with a slight apex contraction form 1–2 mastoid process, smooth, thin-walled, usually containing a little substance, 37–54.5 × 4–8 µm. Basidia cylindrical, colorless, thin-walled, with four sterigmata and a basal simple septum connection, 19–37 × 4–7 µm; basidioles in shape similar to basidia, but slightly smaller.

Spores:— Basidiospores broadly ellipsoid, verrucose, colorless, thin-walled, with a distinct apiculus, amyloid, CB-, (4.4–)4.5–6.1(–6.6) × (3.1–)3.5–4.7(–4.9) µm, L = 5.28 µm, W = 4.07 µm, Q = 1.25–1.31 (n = 90/3).

Specimens examined (paratypes): — CHINA. Yunnan Province, Diqing, Weixi County, Zhonglu Town, Lagaluo Village , 27°16′39′′N, 99°13′75′E, elev. 2500 m a.s.l., on fallen angiosperm branch, leg. C.L. Zhao, 14 October 2023, CLZhao 34654, CLZhao 34941 ( SWFC!) .

Figures

FIGURE 2. Basidiomata of Conferticium fissuratum (A, B) (holotype, CLZhao 34662). Bars: A = 1 cm; B= 1 mm.

FIGURE 3. Microscopic structures of Conferticium fissuratum (holotype, CLZhao 34662). (A) Basidiospores; (B) Basidia; (C) Cystidia; (D) A vertical section of hymenium. Bars: A–D = 10 μm.