Haploporus pirongia (G. Cunn.) Meng Zhou, Y.C.Dai&T.W. May

Zhou, Meng, Wang, Li, May, Tom W., Vlasak, Josef, Chen, Jia-Jia & Dai, Yu-Cheng, 2019, Phylogeny and diversity of Haploporus (Polyporaceae, Basidiomycota), MycoKeys 54, pp. 77-98 : 89-90

Haploporus pirongia (G. Cunn.) Meng Zhou, Y.C.Dai&T.W. May comb. nov. Figs 10, 11

Poria pirongia G. Cunn., Bull. N.Z. Dept. Sci. Industr. Res., Pl. Dis. Div. 72: 39 (1947) (Basionym)

Etymology.

the epithet pirongia, derived from the type locality, Mount Pirongia, is a noun in apposition, and therefore remains spelt the same when transferred from Poria to Haploporus , despite the latter genus being masculine in gender.

Fruitbody.

Basidiocarps annual, resupinate, difficult to separate from the substrate, soft corky when fresh, corky upon drying, odor- or tasteless when fresh, up to 8 cm long, 2 cm wide and 1.7 mm thick at center. Pore surface white to cream when fresh, pale brownish when bruised, pinkish buff to clay-buff upon drying; sterile margin very narrow to almost lacking; pores round to angular, 3-4 per mm; dissepiments thick, entire. Subiculum cream, corky, thin, about 0.3 mm thick. Tubes light buff, corky, about 1.4 mm long.

Hyphal structure.

Hyphal system trimitic: generative hyphae bearing clamp connections, hyaline, thin-walled, frequently branched; skeletal hyphae dominant, thick-walled to subsolid, hyaline to slightly yellowish, frequently branched; binding hyphae abundant, slightly thick-walled, IKI–, CB+, tissues unchanging in KOH.

Subiculum.

Generative hyphae frequent, hyaline, thin-walled, frequently branched, 2.3-3.5 µm in diam; skeletal hyphae dominant, hyaline, distinctly thick- walled with a narrow lumen to subsolid, occasionally branched, interwoven, 2.5-4 µm in diam; binding hyphae abundant, slightly thick-walled,1-2 µm in diam.

Tubes.

Generative hyphae frequent, hyaline, thin-walled, frequently branched, 1.7-3.5 µm in diam; skeletal hyphae distinctly thick-walled with a narrow to wide lumen, frequently branched, interwoven, 2.5-4 µm in diam; binding hyphae slightly thick-walled,1-2.5 µm in diam. Cystidia absent; cystidioles present, fusiform, occasionally with an apical simple septum, sometimes with a few small guttules, 21-28 × 5-7 µm. Basidioles dominant, similar in shape to basidia, but slightly smaller, occasionally with a few large guttules; basidia pear-shaped to barrel-shaped with 4-sterigmata and a basal clamp connection, 21-35 × 8-11 µm. Hyphae at dissepiment usually thick-walled with simple septum. Dendrohyphidia absent. Some irregular-shaped crystals present among tube tramal structures.

Spores.

Basidiospores oblong-ellipsoid to cylindrical, hyaline, thick-walled, with tuberculate ornamentations, some with a guttule, IKI–, CB+, 11 –14(– 15) × (4.8 –)5.2– 7 µm, L = 12.35 µm, W = 6.11 µm, Q = 1.83-2.15 (n = 90/3).

Specimens examined.

AUSTRALIA. Victoria, Melbourne, Dandenong Ranges Botanical Garden, on dead branch of Rhododendron , 12 May 2018, Dai 18659, 18660 & 18661 (MEL, dupl. in BJFC); on dead branch of Eucalyptus , 12 May 2018, Dai 18662 (MEL, dupl. in BJFC). NEW ZEALAND. Omahu Bush, on Melicytus , 15 Feb 2010, Cooper (PDD 95714, dupl. in BJFC).