Polyporales » Phanerochaetaceae » Callosus

Callosus wenshanensis

Callosus wenshanensis C.L. Zhao 2023, in Chen et al., Mycotaxon, 137, 435-448 (2022).

Etymology: wenshanensis (Lat.) refers to the provenance of the specimens.

Diagnosis: Basidiomata annual, resupinate, membranous, without odor or taste when fresh, becoming hard membranous and fragile upon drying, 10 cm long, 2.5 cm wide, 1 mm thick. Hymenial surface smooth, white to cream-colored when fresh, becoming cream-colored and cracking upon drying. Margin sterile, narrow, 1 mm wide, white to cream. Hyphal structure monomitic; generative hyphae with simple septa, colorless, thin- to thick-walled, unbranched, 1.52.3 μm in diameter, IKI, CB; tissues unchanged in KOH. Subiculum subhymenium and subiculum distinct, subicular hyphae loosely arranged, subhymenium covered with crystals. Hymenium cystidia capitate, colorless, thin-walled, progressively broader towards the top, 23.527.2 × 3.23.7 μm. Basidia clavate to cylindrical, with four sterigmata, 16.217.1 × 2.73.4 μm, basidioles dominant, similar in shape to basidia, but slightly smaller. Basidiospores ellipsoid, colorless, thin-walled, smooth, with 12 bubbles, IKI, CB, 2.33.9 (–4.1) × 1.42.3 μm, L = 3.02 μm, W = 1.73 μm, Q = 1.681.82 (n = 60/2). Type of rot: white rot

Index Fungorum Number: IF838559

Figure 1. Maximum parsimony strict consensus tree illustrating the phylogeny of Callosus wenshanensis and related genera in Phanerochaetaceae based on ITS+nLSU sequences. Generic names follow Floudas & Hibbett (2015). Branches are labelled with maximum likelihood bootstrap value >70%, parsimony bootstrap value >70% and Bayesian posterior probabilities >0.95.

Figure 2. Maximum parsimony strict consensus tree illustrating the phylogeny of Callosus wenshanensis and related species in Phanerochaetaceae based on ITS+nLSU sequences. Generic names follow Justo et al. (2017). Branches are labelled with maximum likelihood bootstrap value >70%, parsimony bootstrap value >70% and Bayesian posterior probabilities >0.95.