Simplicillium album
Simplicillium album Z.F. Zhang & L. Cai, sp. nov.
Index Fungorum number: 557740, Facesofungi number: FoF 08449; Fig. 32
Etymology: Referring to the color of its white colonies on plates.
Holotype: HMAS 248003. Hyphae hyaline, septate, smooth, 1.5–3.5 μm wide. Asexual morph Conidiophores simple, erect, cylindrical, smooth, hyaline. Phialides arising from prostrate aerial hyphae solitary, or in whorls of 2–3 at the apex of conidiophores, erect, tapering to the apex, with basal septum, smooth, hyaline, 13.0–40.0 µm long, 1.5–3.0 µm wide at base. Conidia variable in size and shape, 1-celled, smooth, hyaline; microconidia oblong or ellipsoidal, 3.0–4.0 × 1.5–2.0 µm (x̄ ± SD = 3.6 ± 0.37 × 1.7 ± 0.18 µm, n = 40), macroconidia fusiform or falcate, 8.0–11.0 (–13.0) × 2.0–3.5 µm (x̄ ± SD = 9.7 ± 0.86 × 2.9 ± 0.31 µm, n = 20). Octahedral crystals presented. Sexual morph not observed. Culture characteristics—Colonies on PDA attaining 27–29 mm diam. after 10 days, fat, cottony, margin entire, white, light yellow secretions exuded. Reverse plicate, beige (1A1) to bisque (4A2). Colonies on OA attaining 28–31 mm diam. after 10 days, fat, cottony, margin entire, white. Reverse seashell (5A3) to wheat. Colonies on SNA attaining 30–34 mm diam. after 10 days, cottony, margin entire, white, aerial mycelia sparse. Reverse white. Sporulation within 10 days.
Material examined: CHINA, Guangxi, Laibin, Sanshan Cave, N 23.41°, E 108.931°, on soil, May 2016, Z.F. Zhang, HMAS 248003 (holotype designated here), ex-type living culture CGMCC3.19635 = LC12442; Guangxi, Guilin, E’gu Cav, N 24.942°, E 110.511°, on animal faeces, May 2016, Z.F. Zhang, LC12543; ibid., LC12557.
Notes: Simplicillium album is phylogenetically close to S. calcicola Z.F. Zhang, F. Liu & L. Cai, S. lamellicola (F.E.V. Sm.) Zare & W. Gams and S. sympodiophorum Nonaka, Kaifuchi & Masuma (Fig. 31), while S. sympodiophorum is distinguishable in producing monomorphic sympodial conidia. S. album shares similar morphological characters with S. calcicola and S. lamellicola in producing dimorphic conidia. However, S. album produces larger macroconidia (8.0–11.0 (–13.0) × 2.0–3.5 µm) than S. calcicola (4.5–8.0 × 1.0–2.0 µm) and S. lamellicola (4.5–9.0 × 0.8–1.2 µm). In addition, the octahedral crystals of S. calcicola are absent.
Fig. X Simplicillium album (from ex-holotype CGMCC3.19635). a–c Upper and reverse views of cultures on PDA, OA and SNA 10 days after inoculation; d–h conidiophores and phialides; i, j microconidia and macroconidia. Scale bars: d–j = 10 µm
Retrieved from:
Zhang ZF, Zhou SY, Eurwilaichitr L, Ingsriswang S et al. 2021 – Culturable mycobiota from Karst caves in China II, with descriptions of 33 new species. Fungal Diversity 106(1), 29-136. https://doi.org/10.1007/s13225-020-00453-7
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