Antidactylaria minifimbriata Z.F.Yu, M. Qiao & R.F. Castañeda, sp. nov. (Figure 3, 16E)
MycoBank number: MB 556121; Index Fungorum number: IF 556121; Facesoffungi number: FoF 05735;
Etymology: Latin, mini- meaning very small, minutely, + Latin, fimbriata-, referring to edged, delicately toothed, fringe or frill that remained on the conidial base after rhexolytic secession.
Sexual morph: undetermined.
Asexual morph: hyphomycetous.
Colonies on CMA attaining 2.7 cm diam. after 20 days at 25°C, white to rosy buff, reverse buff. Mycelium partly superficial, partly immersed in the substrate, composed of branched, slender, spaced septate, hyaline, smooth-walled hyphae. Conidiophores semi- macronematous, mononematous, cylindrical, straight or slightly flexuous, unbranched, 0–1(–2)-septate, hyaline or pale brown, smooth, sometimes reduced to conidiogenous cells. Conidiogenous cells polyblastic, sympodial elongated, terminal, denticulate, denticles cylindrical, minute fringed. Conidia solitary, acrogenous, narrow obclavate, cylindrical to fusiform, attenuate, rostrate or caudate toward the apex, 27.7–40 × 2.5–3.3 µm, rostrum 10–19 × 1–1.8 µm, 2-septate, hyaline to subhyaline, smooth-walled, with a minute basal frill.
Material examined: CHINA, Hainan province, Diaoluoshan National Forest Park, on decaying leaves, 24 April 2014, Z.F Yu, holotype YMFT 1.04578, ex-type living culture YMF 1.04578 = CGMCC 3.18825.
Notes: – Based on a megablast search of NCBIs GenBank nucleotide database, the closest hits using the ITS sequence (GenBank MK569506) of Antidactylaria minifimbriata are Isthmolongispora ampulliformis (GenBank MH857845; Identities = 442/548 (81 %), Gaps = 37/548 (6 %)) and Dactylaria ampulliformis (GenBank AY265336; Identities = 431/535 (81%), Gaps = 35/535(6%)).
Figure 3. Antidactylaria minifimbriata (YMFT1.04578, holotype). a–c conidia. d conidiophore. e conidia on conidiophore under low objective. Scale bars: a–d = 10 µm, e = 50 µm.
Figure 16. Colony after 20 days on CMA at 25°C. Scales bars: a–m = 2 cm.