Hypocreales » Polycephalomycetaceae » Perennicordyceps

Perennicordyceps elaphomyceticola

Perennicordyceps elaphomyceticola W.Y. Chuang, H.A. Ariyaw., J.I. Yang & Stadler, Mycol. Progr. 19(1): 102 (2020)          

Index Fungorum number: 830670; Facesofungi number: FoF 10735

Parasitic on Elaphomyces sp. Sexual morph: Stroma up to 80 mm long, growing on the host, yellow-brown, single, branched, wiry, stipitate. Stipe up to 38 mm, 3.6 mm wide, cylindrical, terminally branched. Branches up to 41 mm long, 1.5 mm wide, cylindrical, paler toward the apex. Perithecia 380–550 × 260–310 (x̄ = 473 × 285, n = 15) μm, producing from the branches, superficial, ovoid, brown, ostiolate. Asci 230–525 × 4–6.1 (x̄ = 280 × 5.4, n = 25) μm, narrow cylindrical, with a thickened apex. Apical cap 2.5–5 × 1.5–3.5 (x̄ = 3.9 × 2.4, n = 25) μm, hemispherical. Ascospores hyaline, filiform, transversely multiseptate, breaking into numerous secondary ascospores. Secondary ascospores 1.7–3.2 × 1.1–1.9 (x̄ = 2.3 × 1.5, n = 70) μm, hyaline, cubic, with truncate ends, smooth-walled. Asexual morph: Undetermined.

Material examined – China, Yunnan Province, Honghe County, Amushan natural reserve, on Elaphomyces sp. buried in soil, 19 July 2017, Samantha C. Karunarathna, Y57 (HKAS 102450).

 

 

 

Perennicordyceps elaphomyceticola (HKAS 102450). h Stroma emerging from Elaphomyces sp. i Perithecia on stromata. j, k Vertical section of perithecia. l Peridium. m, n Asci. o Asci cap. p Part of ascospore. q Secondary spore. Scale bars: j, k = 200 µm, m, n = 50 µm, d, e, l = 20 µm, o–q = 5 µm.

Notes – Perennicordyceps elaphomyceticola was initially placed in Polycephalomyces by Yang et al. (2020) and subsequently was transferred to the former genus by Xiao et al. (2023) based on phylogenetic analysis. The sexual morph of P. elaphomyceticola was discovered as a parasite on Elaphomyces sp. in Taiwan and Dadugang Village, Jinghong City, Yunnan Province, China (Yang et al. 2020, Xiao et al. 2023). Its asexual morph was found as a hyperparasite on Ophiocordyceps sp. in Yunnan Province. Our specimen was collected from Honghe County, Yunnan Province, China. It has similar morphology to P. elaphomyceticola in that it parasitizes Elaphomyces buried in soil and having dark brown, branched stromata, intercalary fertile part, superficial, ovoid perithecia, narrow cylindrical asci with thick apical cap and filiform, multiseptate ascospores, which disarticulate into numerous cubic secondary ascospores at maturity (Yang et al. 2020, Xiao et al. 2023). The multigene phylogenetic analysis shows it clusters with the type specimen of
P. elaphomyceticola, confirming its taxonomic assignment.

 

Reference:

Wei DP, Gentekaki E, Wanasinghe DN, Tang SM, Hyde KD. Diversity, molecular dating and ancestral characters state reconstruction of entomopathogenic fungi. Mycosphere. 13(2): 281351.

 

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