Fuscoporia eucalypticola Q. Chen, 2024

Chen, Qian, Chen, Han, Luo, Cheng-Hang & Lai, Xiao-Hong, 2024, Molecular phylogeny and morphology of the genus Fuscoporia (Hymenochaetales, Basidiomycota) and reveal three new species of the F. ferrea group, MycoKeys 111, pp. 21-40 : 21-40

Fuscoporia eucalypticola Q. Chen sp. nov.

Figs 2 , 3

Holotype.

Australia • Victoria, Yarra Ranges National Park , on fallen branch of Eucalyptus , 9 May 2018, Dai 18592 A ( BJFC 027061 ).

Etymology.

Eucalypticola (Lat.): refere to the species growing on Eucalyptus.

Description.

Basidiomata. Annual, resupinate, inseparable from the substrate, without odor or taste and corky when fresh, rigid when dry, up to 20 cm long, 3 cm wide and 1.5 mm thick at center. Pore olivaceous buff to greyish brown; sterile margin narrow or almost lacking, buff, up to 1 mm wide; pores irregular or sinuous, 3–5 per mm; dissepiments thin, entire, abundant setae seen in tube cavities (under lens). Subiculum clay-buff, corky, about 0.1 mm thick. Tubes olivaceous buff, up to 1 mm long.

Hyphal structure. Hyphal system dimitic; generative hyphae simple septate; tissue becoming black in KOH.

Subiculum. Generative hyphae infrequently, thin-walled, frequently branched, simple septate, 1.5–2.5 μm in diam; skeletal hyphae dominant, yellowish brown, thick-walled with a medium lumen, unbranched, aseptate, flexuous, strongly interwoven, 2–3 μm in diam.

Tubes. Generative hyphae infrequent, mostly present at subhymenium, hyaline, thin-walled, frequently branched, simple septate, 1.5–2.5 μm in diam; skeletal hyphae dominant, yellowish brown, thick-walled with a wide lumen, unbranched, aseptate, loosely interwoven to subparallel along the tubes, 2–3 μm in diam. Setae frequent, mostly originating from hymenium, subulate, dark brown, thick-walled, 30–60 × 4–6 μm; fusoid cystidioles frequent, hyaline and thin-walled, 25–32 × 2–4 μm; basidia barrel-shaped, with four sterigmata and a simple septum at the base, 20–25 × 4–7 μm; basidioles in shape similar to basidia, but slightly smaller.

Basidiospores. Basidiospores cylindric, hyaline, thin-walled, smooth, IKI –, CB –, sometimes with a small guttule, 6.2–8 × (2 –) 2.1–3 μm, L = 7.03 μm, W = 2.37 μm, Q = 2.86–3.05 (n = 60 / 2).

Additional specimen examined.

Australia • Melbourne, Dandenong Ranges Botanical Garden , on fallen branch of Eucalyptus , 12 May 2018, Dai 18683 ( BJFC 027152 ) .

Figures

Figure 2. Microscopic structures of Fuscoporia eucalypticola (Dai 18592 A, holotype) A basidiospores B basidia and basidioles C cystidioles D hymenial setae E generative hyphae at dissepiment edge F hyphae from tube trama G hyphae from subiculum.

Figure 3. Basidiomata of Fuscoporia eucalypticola A Dai 18592 A (holotype) B Dai 18683.