Tubeufiales » Tubeufiaceae » Tubeufia

Tubeufia filiformis

Tubeufia filiformis Y.Z. Lu, Boonmee & K.D. Hyde

Index Fungorum number: IF 818986; Facesoffungi number: FoF 02692

Etymology: ‘filiformis’ referring to elongate filiform ascospores.

Holotype: MFLU 16-2659


Saprobic on decaying wood in a stream. Sexual morph: Ascomata 273–327 μm high × 160–174 μm diam., superficial, seated on a subiculum, solitary, sometimes gregarious, oblong, subclavate to obclavate, cream-white to yellowish when young, brownish to brown when mature, apex rounded, base narrow, brown to dark brown, collapsing when dry, compressed subiculum hyphae, 3.5–5.5 μm wide, partially branched, septate, dark brown and irregular. Peridium 21–33 μm wide, comprising light brown cells of textura angularis, and inwardly small, subhyaline cells of textura prismatica. Hamathecium comprising numerous, 1.5–3 μm wide, filiform, septate, branched, hyaline pseudoparaphyses. Asci 138–181 × 15–17 μm ( = 153 × 16 μm, n = 20), 8-spored, bitunicate, fissitunicate, cylindrical, short pedicellate, apically rounded, with an ocular chamber. Ascospores 94–157 × 3.5–4.5 μm ( = 124 × 4 μm, n = 50), fasciculate, broadly filiform, cylindrical to long subfusiform, elongate, ends rounded, 13–16-septate, not constricted at septa, hyaline to pale yellow or brown, smooth-walled. Asexual morph: Conidiophores pale brown, macronematous, erect, short, smooth-walled. Conidiogenous cells monoblastic, holoblastic, integrated, each with a single conidium. Conidia 54.5–75 μm diam. and conidial filament 4.5–5.5 μm wide ( = 65 × 5 μm, n = 20), 331–392 μm long, loosely coiled 1–2.5 times, rounded at the tip, multi-septate, slightly constricted at septa, hyaline, smooth-walled. (Lu et al. 2017)


Photographic plate: see Lu et al. 2017


Freshwater distribution: Thailand (Lu et al. 2017, 2018)



Lu YZ, Boonmee S, Dai DQ, Liu JK, Hyde KD, Bhat DJ, Ariyawansa H, Kang JC (2017) Four new species of Tubeufia (Tubeufiaceae, Tubeufiales) from Thailand. Mycol Prog 16:403–417.

Lu YZ, Liu JK (Jack), Hyde KD, Jeewon R, Kang JC, Fan C, Boonmee S, Bhat DJ, Luo ZL, Lin CG, Eungwanichayapant PD (2018) A taxonomic reassessment of Tubeufiales based on multi-locus phylogeny and morphology. Fungal Divers 92:131–344.


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