Fuscoporia marquesiana Gibertoni & C.R.S. de Lira, in Yuan et al.

Pagin-Cláudio, Filipe & Gugliotta, Adriana de Mello, 2024, Six new records of polypores (Agaricomycetes, Basidiomycota) from Southeast Brazil (Atlantic Forest) and perspectives in basic mycological research, Rodriguesia (e 00672024) 76, pp. 1-15 : 5-6

3. Fuscoporia marquesiana Gibertoni & C.R.S. de Lira, in Yuan et al. , Fungal Diversity (2020).

Figs. 4 a-c; 9c-d

Basidiomata seasonal to perennial, pileate, aplanate to slightly reflexed on the base, coriaceous to sub-woody, flabelliform, semicircular, elongate to convex, gregarious, up to 1 cm deep, 1–7(–8) × 1–4 cm. Abhymenial surface zonate, zones slightly to moderately sulcate and numerous, glabrous to pubescent or tomentose, sometimes radially striate and rugose, brownish-yellow, yellowishorange to faintly purplish-dark. Margin acute to subobtuse. Context zonate, fibrous-velutinate, gold-yellowish to yellowish-brown, 1–5 mm thick. Tubes unistratified to pluristratified, distinctly stratified, up to 8 mm deep. Hymenial surface poroid, brownish-purple, often with a grayish tint. Pores invisible to the naked eye, round, 7–9 per mm. Dissepiments entire, thick, pubescent. Hyphal system dimitic. Generative hyphae frequent, simple septate, hyaline to yellow, thin- to slightly thick-walled, straight, branches proximal, 2–3 μm diam. Skeletal hyphae dominant, thick-walled to solid, often aseptate, yellowish-red to reddish-brown, 3–4 μm diam. Setae hymenial, frequent, covering about 3/4 of the pores, apex acute to slight- or even moderately hook, lanceolate to subulate, brown, thick-walled, aseptate to simple septate close to the apex, (14–)15–23.8(–25) × (3.4)4.1–5.7(–6.7) μm, Lm × Wm = 20 × 4.8 μm, Q = (2.6–)3–5.4(–6.3), Qm = 4.2 (n = 26/1). Basidia not found. Basidiospores few, widely ellipsoid, hyaline, thin-walled, smooth, often with refringent content, 4–6.9(–7) × 2.5–4.5(– 4.6) μm, Lm × Wm = 5.1 × 3.6 μm; Q = 1.2–1.6; Qm = 1.4 (n = 16/1).

Material examined: Juquitiba, São Paulo Green Belt Biosphere Reserve, Tenda Tipi, 9.II.2022, F. Pagin et al. FP 508 (SP 528838) .

X ylophagous on angiosperm wood, where it may cause white rot like other species in the genus.

The species was found in Brazil ( Yuan et al. 2020). Previously recorded from the Brazilian Atlantic Forest of the state of Bahia ( Yuan et al. 2020). This is the second record for the species since its description and the first record from the Southeast of Brazil.

The type locality of Fuscoporia marquesiana is Santa Teresinha , Bahia, Brazil ( Yuan et al. 2020) .

Fuscoporia marquesiana can be recognized in the field by its aplanate, seasonal to perennial basidiomata, narrowly to densely sulcate abhymenial surface, often acute margin, brown to purple-brown hymenial surface, as well as by pores which are invisible to the naked eye. In addition, it’s both hooked and acute hymenial setae plus broadly ellipsoid basidiospores are diagnostic.

The material examined (SP 528838), has slightly larger basidiospores compared to the original description, but only few were found and the original description for F. marquesiana was based on a single specimen ( URM 83094), which is insufficient to verify intraspecific variations ( Yuan et al. 2020; present study). Fuscoporia wahlbergii (Fr.) T. Wagner & M. Fisch. is a morphologically similar species, but differs by the strongly hooked setae (vs. slightly to moderately hooked in F. marquesiana ), besides the type of insertion, margin thickness, and coloration of the basidiomata ( Yuan et al. 2020; present study).

Figures

Figure 4–a-c. Fuscoporia marquesiana. Macromorphology of the basidiomata – a. close view of the basidiomata; b. basidiomata; c. hymenial surface. (a-c. Pagin et al. 508). Scale bars: a-c = 1 cm.