Fuscoporia kenyana Q. Chen & Y. C. Dai 2023, sp. nov.
Creators: name: Chen, Qian
name: Luo, Hua-Dong
name: Cheng, Na
name: Zhang, De-Shun
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Hymenochaetales
Hymenochaetaceae
Fuscoporia
Fuscoporia kenyana

description: Fuscoporia kenyana Q. Chen & Y.C. Dai, sp. nov. (Figs. 3, 4)
MycoBank no.—MB 845196
Holotype. — KENYA. Masai Mara, Grassland Fig Tree Camp, on rotten angiosperm wood, 15 September 2018, Dai 19202 (BJFC 027669).
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).
description: Published as part of 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, pp. 219-231 in Phytotaxa 619 (3) on pages 225-227, DOI: 10.11646/phytotaxa.619.3.2, http://zenodo.org/record/8426027