Gamszarea humicola Z.F. Zhang & L. Cai, sp. nov. 2020
Index Fungorum number: 557631; Facesoffungi number: FoF 08445
Holotype: CHINA, Guangxi, Guilin, E’gu Cave, N 24.942°, E 110.511°, on soil, May 2016, Z.F. Zhang, HMAS 247987 (holotype designated here), ex-type living culture CGMCC3.19303 = LC12461; ibid., LC12462.
Morphological description
Hyphae hyaline, septate, smooth, 1.5–2.5 μm wide. Asexual morph Conidiophores arising from prostrate aerial hyphae, erect, hyaline, 1.0–2.5 μm diam. Phialides arising from prostrate aerial hyphae solitary, or in whorls of 2–6 at the apex of conidiophores, erect, aculeate, tapering to the apex, hyaline, 14.0–34.0 µm long, 1.0–2.5 µm diam. at base. Conidia unicellular, long fusiform, or curved to falcate, smooth, hyaline, each phialide producing one macroconidia and several microconidia, variable in size, aggregated in slimy head; macroconidia 9.0–13.0 × 1.5–2.5 µm ( x̄ ± SD = 10.7 ± 1.1 × 2.0 ± 0.19 µm, n = 35); microconidia 3.5–6.5 × 1.0–1.5 µm ( x̄ ± SD = 5.1 ± 0.88 × 1.3 ± 0.15 µm, n = 50). Sexual morph not observed. Culture characteristics—Colonies on PDA attaining 31–40 mm diam. after 4 weeks, flat, cottony, margin slightly undulate, white. Reverse plicate, cream yellow (4A1) to light yellow (3A3). Colonies on OA attaining 44–48 mm diam. after 4 weeks, flat, cottony, margin entire, white. Reverse cream-white. Colonies on SNA attaining 46–50 mm diam. after 4 weeks, flocculent, margin unclear, white. Reverse white. Sporulation within 20 days.
Habitat: on soil.
Distribution: Guangxi, Guilin, E’gu Cave, China.
GenBank Accession:
Notes: Gamszarea humicola is phylogenetically close to G. kalimantanensis, G. lunata and G. wallacei (Fig. 25). Morphologically, G. humicola differs from G. kalimantanensis by its mostly solitary phialides; from G. lunata by its longer macroconidia (9.0–13.0 µm vs. 7.0–9.5 µm); from G. wallacei in its wider phialides (1.0–2.5 µm vs. 0.7–1.2 µm) and macroconidia (1.5–2.5 µm vs. 1.0–1.5 µm).
Reference: Zhi‑Feng Zhang ,Shi‑Yue Zhou ,Lily Eurwilaichitret al.
Gamszarea humicola (from ex-holotype CGMCC3.19303). in globose heads; h germinated conidia; i macroconidia and microcoa–c Upper and reverse views of cultures on PDA, OA and SNA 4 nidia. Scale bars: d–i 10 μm weeks after inoculation; d–e conidiophores and phialides; f–g conidia
