Phylloporia lonicerae W.M. Qin, Xue W. Wang, T. Sawahata & L.W. Zhou

Qin, Wen-Min, Wang, Xue-Wei, Sawahata, Takuo & Zhou, Li-Wei, 2018, Phylloporialonicerae (Hymenochaetales, Basidiomycota), a new species on Lonicerajaponica from Japan and an identification key to worldwide species of Phylloporia, MycoKeys 30, pp. 17-30 : 19-21

Phylloporia lonicerae W.M. Qin, Xue W. Wang, T. Sawahata & L.W. Zhou sp. nov. Figs 2, 3

Holotype.

JAPAN. Nara, Research Forest of Faculty of Agriculture, Kindai University, 3 Jul 2017, on living vine of Lonicera japonica , LWZ 20170703-2 (IFP 019172).

Etymology.

Lonicerae (Lat.): referring to Lonicera , the host tree genus.

Basidiocarps annual, sessile, imbricate, rarely solitary, without odour or taste, woody. Pilei semi-circular, flabelliform or fused together, applanate, single pileus projecting up to 1.5 cm long, 3 cm wide and 0.5 cm thick at base. Pileal surface greyish-brown to yellowish-brown, velutinate, concentrically sulcate with narrow zones; margin pale yellow or concolorous, sharp. Pore surface honey-yellow, slightly glancing; sterile margin distinct, curry-yellow, up to 0.5 mm wide; pores circular to angular, 6-8 per mm; dissepiments thin, entire. Context up to 2 mm thick, duplex, with a black zone, lower context olivaceous buff, hard corky, up to 1 mm thick, upper tomentum cinnamon-buff, soft, up to 1 mm thick. Tubes honey-yellow, corky, up to 3 mm long.

Hyphal system dimitic; generative hyphae simple septate; tissue darkening but otherwise unchanged in KOH. Context: in the lower context, generative hyphae hyaline to pale yellowish, slightly thick- to thick-walled with a wide lumen, frequently branched and septate, 2-4 μm in diam; skeletal hyphae golden yellow, thick-walled with a narrow lumen, unbranched, aseptate, interwoven, 2-4.5 μm in diam; in the upper tomentum, generative hyphae infrequent, pale yellowish, slightly thick- to thick-walled with a wide lumen, rarely branched, frequently septate, 2-4 μm in diam; skeletal hyphae golden yellow, thick-walled with a narrow to wide lumen, unbranched, aseptate, loosely interwoven, 2.5-5 μm in diam; in the black zone, hyphae dark brown, thick-walled with a narrow lumen, strongly agglutinated, interwoven. Tubes: generative hyphae hyaline to pale yellowish, thin- to slightly thick-walled, occasionally branched, frequently septate, 1.8-4 μm in diam; skeletal hyphae golden yellow, thick-walled with a narrow lumen, unbranched, aseptate, interwoven, 2-4 μm in diam. Setae absent. Cystidia and cystidioles absent. Basidia clavate, with four sterigmata up to 3 μm long and a simple septum at the base, 7-11 × 4-6 μm; basidioles in shape similar to basidia, but slightly smaller. Basidiospores broadly ellipsoid, pale yellowish, thick-walled, smooth, indextrinoid, inamyloid, acyanophilous, (3 –)3.2– 4 × (2.1 –)2.3–3.1(– 3.3) μm, L = 3.61 μm, W = 2.77 μm, Q = 1.28-1.33 (n = 90/3).

Additional specimens (paratypes) studied.

(All on living vine of Lonicera japonica )-JAPAN. Nara, Research Forest of Faculty of Agriculture, Kindai University, 31 Oct 2016, LWZ 20161031-1 (IFP 019173); 27 Feb 2017, LWZ 20170227-1 (IFP 019174); 25 Mar 2017, LWZ 20170325-1 (IFP 019175); 22 Jun 2017, LWZ 20170622-1 (IFP 019176); 3 Jul 2017, LWZ 20170703-1 (IFP 019177).