Neofavolus alveolaris
Neofavolus alveolaris (DC.) Sotome & T. Hatt. 2012, in Cui, et al., Fungal Diversity 97, 137–392 (2019)
Diagnosis: Basidiocarps annual, laterally to centrally stipitate, mostly solitary, leathery when fresh, becoming corky upon drying. Pilei fan-shaped, reniform to semicircular, usually circular in centrally stipitate specimens, projecting up to 5 cm, 8.6 wide and 7 mm thick at center. Pileal surface usually fibrillose to squamous with flattened triangular squamules, cream to orange when fresh, buff to reddish-orange when dry, azonate, margin straight when fresh, straight or slightly incurved upon drying. Pore surface cream to buff when fresh, buff to light-brown when dry; pores angular to radially elongated, 1–2 per mm, frequently elongated up to 4 mm long and 2.5 mm wide; dissepiments thin, entire to slightly lacerate. Context white to cream when fresh, buff when dry, up to 3 mm thick. Tubes concolorous with pore surface or slightly paler, decurrent, up to 5 mm long. Stipe concolorous with pileal surface or paler, up to 1 cm long and 8 mm in diam. Hyphal system dimitic; generative hyphae bearing clamp connections; skeletal hyphae IKI–, CB+; tissues unchanged in KOH. Generative hyphae frequent, hyaline, thin-walled, frequently branched, 2.5–5.5 µm in diam; skeletal hyphae dominant, hyaline, slightly thick-walled with a wide lumen in juvenile specimens and thick-walled with a narrow lumen to subsolid when mature, moderately branched, interwoven, 2–6 µm in diam. Hyphae in squamules thin-walled bearing clamp connections, with buff inclusion, 3–7.5 µm in diam. Generative hyphae frequent, hyaline, thin-walled, frequently branched, 2–4.3 µm in diam; skeletal hyphae dominant, hyaline, slightly thick-walled with a wide lumen in juvenile specimens and thick-walled with a narrow lumen to subsolid when mature, moderately branched, interwoven, 2–5.5 µm in diam. Cystidia and cystidioles absent. Basidia clavate, with four sterigmata and a basal clamp connection, 16.5–32.3 × 6.5–8.5 µm; basidioles in shape similar to basidia, but slightly smaller. Generative hyphae frequent, hyaline, thin-walled, frequently branched, 2–5.5 µm in diam; skeletal hyphae dominant, hyaline, slightly thick-walled with a wide lumen in juvenile specimens and thick-walled with a narrow lumen to subsolid when mature, moderately branched, interwoven, 1.5–6.6 µm in diam.
Index Fungorum Number: IF801928
Notes: Neofavolus alveolaris has variable size of basidiospores and variable color of pileal surface in different specimens. Its fibrillose to squamous basidiocarps is different from other Neofavolus species.
Figure 1. Basidiocarps of Neofavolus alveolaris
Figure 2. Microscopic structures of Neofavolus alveolaris (drawn from Cui 11156). a. Basidiospores; b. Basidia and basidioles; c. Hyphae from trama. Bars: a = 5 µm; b–c = 10 µm
Reference:
Cui, B.K., & Li, H.J., & Ji, X., & Zhou, J.L., & Song, J. & Si, J., & Yang, Z.L., & Dai, Y.C. (2019). Species diversity, taxonomy and phylogeny of Polyporaceae (Basidiomycota) in China. Fungal Diversity 97, 137–392
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