Hypocreales » Cordycipitaceae » Gamszarea

Gamszarea humicola

Gamszarea humicola Z.F. Zhang & L. Cai, sp. nov.

Index Fungorum number: 557631, Facesofungi number: FoF 08445; Fig. 27

Etymology: Referring to the substrate where this fungus was isolated.

Holotype: HMAS 247987.

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, fat, 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, fat, cottony, margin entire, white. Reverse cream-white. Colonies on SNA attaining 46–50 mm diam fter 4 weeks, focculent, margin unclear, white. Reverse white. Sporulation within 20 days.

Material examined: 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.

Notes: Gamszarea humicola is phylogenetically close to G. kalimantanensis, G. lunata and G. wallacei (Fig. 25). Morphologically, G. humicola difers 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).

Fig. X Gamszarea humicola (from ex-holotype CGMCC3.19303). a–c Upper and reverse views of cultures on PDA, OA and SNA 4 weeks after inoculation; d–e conidiophores and phialides; f–g conidia in globose heads; h germinated conidia; i macroconidia and microconidia. Scale bars: d–i 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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