Polyporales » Steccherinaceae » Elaphroporia

Elaphroporia ailaoshanensis

Elaphroporia ailaoshanensis Z.Q. Wu & C.L. Zhao 2018, in Wu et al., MycoKeys (29), 89 (2018).

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

Diagnosis. This species is distinguished by the cream to yellow pore surface upon drying; pores angular, 7–9 per mm. Hyphal system monomitic; generative hyphae thick-walled bearing both clamp connections and simple septa, slightly amyloid, CB+. Basidiospores ellipsoid, hyaline, thin-walled, smooth, IKI–, CB–, 1.9–2.5 ×1.5–2 μm.

Basidiocarps. Annual, resupinate, easy to separate from substrate, soft corky when fresh, without odour or taste when fresh, becoming rigid and light-weight up on drying, up to 5 cm long, 3.5 cm wide, 4 mm thick at centre. Pore surface cream to pale yellow when fresh, turning to yellow upon drying; pores angular, 7–9 per mm; dissepiments thin, entire. Sterile margin narrow, cream, up to 1 mm wide. Subiculum thin, cream, corky, up to 0.2 mm thick. Tubes concolorous with pore surface, hard corky, up to 3.8 mm long.

Hyphal structure. Hyphal system monomitic; generative hyphae thick-walled, slightly amyloid, CB+; tissues unchanged in KOH.

Subiculum. Generative hyphae hyaline, thick-walled bearing both clamp connec­tions and simple septa, simple septa more frequent than clamps, occasionally branched, interwoven, 3.5–5.5 μm in diam.

Tubes. Generative hyphae hyaline, thick-walled bearing simple septa only, occa­sionally branched, 3–5 μm in diameter. Cystidia and cystidioles absent; basidia clavate, with four sterigmata and a basal clamp connection, 10.5–14.5 × 3.5–4.5 μm; basidi­oles dominant, in shape similar to basidia, but slightly smaller.

Spores. Basidiospores ellipsoid, hyaline, thin-walled, smooth, IKI–, CB–, (1.7–)1.9– 2.5(–2.9) × (1.3–)1.5–2(–2.2) μm, L = 2.29 μm, W = 1.74 μm, Q = 1.33–1.81 (n = 120/4).

Index Fungorum Number: IF823916

Figure 1. Maximum parsimony strict consensus tree illustrating the phylogeny of Elaphroporia ailao­shanensis and related species in Polyporales based on ITS+nLSU sequences. Branches are labelled with parsimony bootstrap values (before slash) higher than 50 % and Bayesian posterior probabilities (after slash) equal to and more than 0.95. Clade names follow Binder et al. (2013).

Figure 2. Maximum parsimony strict consensus tree illustrating the phylogeny of Elaphroporia ailaosha­nensis and related species in the residual polyporoid clade based on ITS+nLSU sequences. Branches are labelled with parsimony bootstrap values (before slash) higher than 50% and Bayesian posterior probabili­ties (after slash) equal to and more than 0.95. Clade names follow Miettinen et al. (2011).

Figure 3. Basidiomata of Elaphroporia ailaoshanensis (holotype). Scale bars: 1 cm (A); 1 mm (B).

Figure 4. Microscopic structures of Elaphroporia ailaoshanensis (drawn from the holotype). A Basidiospores B Basidia and basidioles C Hyphae from trama D Hyphae from subiculum.

 

References:

Binder M, Justo A, Riley R, Salamov A, López-Giráldez F, Sjökvist E, Copeland A, Foster B, Sun H, Larsson E, Larsson KH, Townsend J, Grigoriev IV, Hibbett DS (2013) Phylogenetic and phylogenomic overview of the Polyporales. Mycologia, 105: 1350–1373.

Miettinen O, Larsson KH, Sjökvist E, Larsson KL (2011) Comprehensive taxon sampling reveals unaccounted diversity and morphological plasticity in a group of dimitic polypores (Polyporales, Basidiomycota). Cladistics, 28: 251–270.

Wu, Z. Q., Xu, T. M., Shen, S., Liu, X. F., Luo, K. Y., & Zhao, C. L. (2018). Elaphroporia ailaoshanensis gen. et sp. nov. in Polyporales (Basidiomycota). MycoKeys, (29), 81-95

 

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