Anthodidymella dracineginum Chaiwan & K.D. Hyde, (umpangsoil2) sp. nov. (Dhanu)
MycoBank number: MB; Index Fungorum number: IF; Facesoffungi number: FoF 10756, Fig. **.
Etymology: The specific epithet reflects the host Dracaena sp.
Holotype: MFLU 17–***.
Saprobic on dead leaf of Dracaena sp. Sexual morph: Ascomata 200–250 × 100–120 μm (x̅ = 225 × 110 μm, n = 20), superficial, solitary, globose or subglobose to pyriform, with elongated ostioles. Peridium 80–95 μm wide, of 2–5 layers, brown to black cells of textura globulosa.Hamathecium not observes. Asci 50–80 × 18–25 μm (x̅=65 × 21.5 μm, n = 30), 8-spored, bitunicate, cylindrical club-shaped pedicel. Ascospores 10–20 × 8–10 μm (x̅ = 15 × 9 μm, n = 50), uniseriate or partially overlapping, ovate to obpyriform, 1-septate, hyaline. Asexual morph: Undetermined.
Material examined – Thailand, Tak Province, Umpang district, on dead leaves of Dracaena sp., 3 February 2015, Napalai Chaiwan, Umpangsoil2 (MFLU T19-1381, holotype).
Host – Dracaena sp.—(This study).
Distribution – Thailand—(This study).
GenBank accession numbers – MFLU **; LSU: ***; ITS: no sequence; TUB2: no sequence
Notes – Anthodidymella dracineginum (MFLU T19-1381) is recorded from the different host of Anthodidymella clematidis (Phukhamsakda et al. 2020). In a BLASTn search of GenBank, the ITS sequence had ***% similarity (**% nucleotide differences), while the act sequence had **% similarity (** nucleotide differences in 297 nucleotides). Thus, the new strain is introduced as a new species of Anthodidymella based on guidelines of Jeewon and Hyde (2016). Additionally, A. dracineginum is designated as the new species of Anthodidymella based on available material.
Figure ***– Anthodidymella dracineginum (MFLU ***, herbarium). a–b Appearance of ascomata on host substrate. c Section through conidioma e. Peridium d, f–j. Asci k–n. Ascospore Scale bars: b=500 μm. c–d, f=50 μm. e, g–j=20 μm. k–n=10 μm.