Chaetothyriales » Herpotrichiellaceae » Melanoctona

Melanoctona tectonae

Melanoctona tectonae Qing Tian, Doilom & K.D. Hyde, in Tian, Doilom, Luo, Chomnunti, Bhat, Xu & Hyde, Cryptog. Mycol. 37(4): 487 (2016)

Index Fungorum number: IF552158            Facesoffungi number: FoF 02226

Asexual morph: Hyphomycetous. Conidiophores 3-6 μm (x̅ = 5.2 μm, n = 7) width, mononematous, macronematous, unbranched, erect, straight or flexuous, smooth, dark brown. Conidiogenous cells holoblastic, integrated, sympodially proliferating, terminal and intercalary, pale brown or subhyaline. Conidia 28-39 × 43-49 μm (x̅ = 34.5 μm, n = 10), acrogenous, light brown to black, ovoid, muriform, rounded at base and apex, smooth-walled. Sexual morph: Undetermined.

Culture characteristics: Conidia germinating on PDA within 12 h and germ tubes produced from both ends. Colonies on PDA, fast growing, reaching up to       15 mm diam. in 14 days at 25°C. Mycelium superficial, circular, hairy, with entire edge, brown, dark brown at the periphery, completely dark brown from below.


Material examined: THAILAND, Chiang Rai Province, Mae Chan District, on dead branch of Tectona grandis L.f. (Lamiaceae), 1 July 2012, M. Doilom MKT062 (MFLU 15-3528, holotype); ibid., (HKAS 94893, isotype); ex-type living culture, MFLUCC 12-0389, KUMCC 16-0009.


Figure X. Melanoctona tectonae (MFLUCC 12-0389, holotype) a. Appearance of fungus on dead branch of Tectona grandis b, c. Conidia scattered on the surface of wood. d, e. Conidia. f-j. Conidiophores with conidia k. Germinating conidium. l. Surface view of culture on PDA. m. Reverse view of culture on PDA. Scale bars: b = 1000 μm, c = 200 μm, d-k = 10 μm.

Reference: Tian Q, Doilom M, Luo ZL, Chomnunti P, et al. (2016). Introducing Melanoctona tectonae gen. et sp. nov. and Minimelanolocus yunnanensis sp. nov.(Herpotrichiellaceae, Chaetothyriales). Cryptogamie, Mycologie, 37(4): 477 492.


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