Pseudowrightoporia dominicana Angelini, Losi & Vizzini

Vizzini, Alfredo, Angelini, Claudio, Losi, Cristiano & Ercole, Enrico, 2018, Diversity of polypores in the Dominican Republic: Pseudowrightoporiadominicana sp. nov. (Hericiaceae, Russulales), MycoKeys 34, pp. 35-45 : 38-39

Pseudowrightoporia dominicana Angelini, Losi & Vizzini sp. nov. Fig. 3

Holotype.

Dominican Republic. La Vega (Province), Jarabacoa (Municipality), Montaña (Locality), 19°06'39"N, 70°37'57"W, on an unidentified live trunk of a deciduous tree, in a mixed mountain forest with several broadleaved species and pines ( Pinus occidentalis ), 17 December 2016, Claudio Angelini, (JBSD 127410, isotype ANGE 789).

Etymology.

The epithet refers to the country, The Dominican Republic, where this species was found.

Basidiomata annual, pileate, sessile, single or in small clusters, fibrous-tough (Fig. 3a and b). Pileus broadly attached to dimidiate, up to 25 mm wide and 15 mm deep, 5-10 mm thick; upper surface white to cream with pinkish tint, velutinate to glabrous, azonate, smooth; margin rounded, even or slightly lobed; pore surface concolorous with the pileus surface, pores round to angular, at first cupulate, 6-8 per mm, dissepiments thick and entire; tube layer 2-4 mm thick, whitish to cream; context pinkish (Fig. 3c), homogenous, tough-fibrous, up to 6 mm thick. Hyphal system di-trimitic; generative hyphae clamped, hyaline, thin-walled, 2.2-4.8 µm wide; skeletal hyphae thick-walled, rarely branched, 2.4-5.6 µm wide, dextrinoid especially in the trama (Fig. 3d); contextual binding hyphae thick-walled, short-branched, 1.6-2.4 µm wide, weakly dextrinoid (Fig. 3e). Cystidia none. Basidia densely united, clavate, 4-sterigmate, 8-12 × 4-5 µm. Basidiospores (2.6 –)2.98–3.2–3.43(– 3.6) × (1.8 –)1.96–2.2–2.44(– 2.8) µm (n = 40), Q = (1.14 –)1.28–1.44–1.6(– 1.89), broadly ellipsoid to ellipsoid, finely asperulate, thin- to slightly thick-walled, distinctly amyloid (Fig. 3f).

Habit, habitat and distribution.

Pileate, gregarious on a live trunk of deciduous tree, so far known only from the type locality.