Fuscoporia kenyana Q. Chen & Y.C. Dai, 2023

Chen, Qian, Luo, Hua-Dong, Cheng, Na & Zhang, De-Shun, 2023, Morphological and molecular evidence for a new species of Fuscoporia (Hymenochaetales, Basidiomycota) from tropics, Phytotaxa 619 (3), pp. 219-231 : 225-227

publication ID	https://doi.org/ 10.11646/phytotaxa.619.3.2
DOI	https://doi.org/10.5281/zenodo.8432794
persistent identifier	https://treatment.plazi.org/id/483187C0-FF70-9E5D-5090-75BFFDF9FBC2
treatment provided by	Plazi
scientific name	Fuscoporia kenyana Q. Chen & Y.C. Dai
status	sp. nov.

Treatment

Fuscoporia kenyana Q. Chen & Y.C. Dai , sp. nov. ( Figs. 3 View FIGURE 3 , 4 View FIGURE 4 )

MycoBank no.—MB 845196

Holotype. — KENYA. Masai Mara , Grassland Fig Tree Camp, on rotten angiosperm wood, 15 September 2018, Dai 19202 ( BJFC 027669 View Materials ).

Paratype.— KENYA. Aberdare County Club , on fallen angiosperm trunk, 17 September 2018, Dai 19205 ( BJFC 027672).

Etymology.—Kenyana (Latin): refers to the species has a distribution in Kenya.

Description.—Basidiocarps annual, effused-reflexed to pileate, without odor or taste when fresh, hard corky when dry. Pilei mostly applanate to dimidiate, projecting up to 5 cm long, 2.6 cm wide, 2 mm thick at the base. Pileal surface umber, concentrically sulcate with zones, velutinate to glabrous; margin obtuse to slightly acute, grayish brown, up to 8 mm wide. Pore surface grayish brown, sterile margin matted, up to 1 mm wide; pores circular, 9–11 per mm; dissepiments thin, entire, abundant hymenial setae in tube cavities (under anatomical lens). Context clay-buff, hard corky, up to 0.2 mm thick. Tubes concolorous with pores, hard corky, up to 1.8 mm long.

Hyphal structure.—Hyphal system dimitic; generative hyphae simple septate; tissue darkening but otherwise unchanged in KOH.

Subiculum: Generative hyphae rare, hyaline, thin- to thick-walled, occasionally branched, frequently simple septate, 2.5–3.0 μm in diam; skeletal hyphae dominant, yellow-brown, thick-walled with a narrow to medium to wide lumen, occasionally branched, septate; flexuous, interwoven, 3.0–5.0 μm in diam; mycelial setae frequent, dark reddish brown, thick-walled, tapering to apex, frequently simple septate, up to 35 μm long and 7–8 μm in the widest part.

Tubes: Generative hyphae infrequent, mostly present at dissepiment edges and subhymenium, hyaline, thin-walled, frequently branched and simple septate, 2–2.5 μm in diam, some of them at dissepiment edges and in hymenium encrusted; skeletal hyphae dominant, yellowish brown, thick-walled with a narrow to medium lumen, unbranched, septate, more or less straight, loosely interwoven, 3.0–4.0 μm in diam. Hymenial setae frequent, mycelial setae occasionally present, tapering to apex, subulate, swollen near the base, mostly originating from hymenium, subulate, dark brown, thick-walled, occasionally septate, 22–28 × 7–8 μm; fusoid cystidioles frequent, hyaline and thin-walled, 9.5–12 × 4–5 μm. Basidia barrel-shaped, with four sterigmata and a simple septum at the base, 5.5–6 × 4–6 μm; basidioles dominating in hymenium, in shape similar to basidia, secondary hyphae usually present in tubes, hyaline, thin-walled, occasionally branched and septate, 2–3 μm in diam.

Basidiospores broadly ellipsoid, hyaline, thin-walled, smooth, usually massively glued in the secondary hyphae tip usually glued in tetrads, IKI-, CB-, occasionally bearing a guttule, 4.0–5.0 × (2.5–)2.8–3.5(–3.8) μm, L = 4.53 μm, W = 3.13 μm, Q = 1.45 (n = 49/2).