Phlebia ailaoshanensis C.L. Zhao, 2018

Shen, Shan, Ma, Xiang, Xu, Tai-Min & Zhao, Chang-Lin, 2018, Phlebia ailaoshanensis sp. nov. (Polyporales, Basidiomycota) evidenced by morphological characters and phylogenetic analyses, Phytotaxa 373 (3), pp. 184-196 : 190

Phlebia ailaoshanensis C.L. Zhao , sp. nov. ( Figs. 2 , 3 )

MycoBank no.: MB 827601

Type:— China. Yunnan Province, Puer, Jingdong County, Ailaoshan National Nature Reserve, on the angiosperm trunk, 4 October 2017, CLZhao 4036 (holotype, SWFC!)

Etymology.— Ailaoshanensis (Lat.) : referring to the locality (Ailaoshan) of the type specimens.

Basidiomata: —Basidiocarps annual, resupinate, ready to separate from substrate, subceraceous to subgelatinous, without odor or taste when fresh, becoming membranaceous to coraceous upon drying, up to 21 cm long, 100–500 μm thick. Hymenial surface tuberculate to phlebioid with aculei, cream to buff-yellow to orange-yellow when fresh, buff to yellowish brown upon drying. Sterile margin distinct, white, fimbriate.

Hyphal structure.— Hyphal system monomitic; generative hyphae with simple septa, IKI–, CB –; tissues unchanged in KOH.

Hymenium : — Cystidia and cystidioles absent; numerous crystals present among the hyphae, basidia clavate, with four sterigmata and a basal simple septa, 15.5–25.5 × 5–7 μm; basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid, more or less curved, hyaline, thin-walled, smooth, IKI–, CB –, (5.5–)5.7– 8.5(–8.8) × 3–4.3(–4.5) μm, L = 7.15 μm, W = 3.62 μm, Q = 1.63–2.22 (n = 300/10).

Additional specimens examined:— China. Yunnan Province, Puer, Jingdong county, Ailaoshan National Nature Reserve, on the angiosperm trunk, 4 October 2017, CLZhao 3882, 3897, 3905, 3942, 3953 ( SWFC!), on the fallen angiosperm branch, 4 October 2017, CLZhao 3879, 3893, 3996 ( SWFC!), on the fallen branch of Pinus , 4 October 2017, CLZhao 3904 (paratypes, SWFC!).

Figures

FIGURE 2. Maximum Parsimony strict consensus tree illustrating the phylogeny of Phlebia ailaoshanensis and related species in Phlebia based on ITS+nLSU sequences. Branches are labeled with maximum likelihood bootstrap higher than 70%, parsimony bootstrap proportions higher than 50% and Bayesian posterior probabilities more than 0.95 respectively.

FIGURE 3. Basidiomata of Phlebia ailaoshanensis (holotype). Scale bars: a–1 cm, b–5 mm.