Scytalidium tongrenense S. Q. Tong & Zhi. Y. Zhang, 2025

15. Scytalidium tongrenense S. Q. Tong & Zhi. Y. Zhang sp. nov.

Fig. 5 View Figure 5

Type.

CHINA • Guizhou, Tongren, Yanhe County, Qiaojia Town , 28.28°N, 108.44°E, soil, 5 July 2023, Shuo-Qiu Tong ( holotype HMAS 354098 View Materials , dried culture; ex-type CGMCC 3.28994 View Materials , ibid., SQT 13) GoogleMaps

Etymology.

The epithet refers to the type location.

Description.

Culture characteristics (14 days at 25 ° C): Colonies on PDA attaining 17–34 mm diam., flat, margin fimbriate, floral white (1 A 2) to white (1 A 1). Reverse floral white (1 A 2) to white (1 A 1). Colonies on SNA attaining 66–68 mm diam., flat, margin entire, pale gray (30 B 2). Reverse pale gray (30 B 2).

Chlamydospore-like cells yellow-brown to dark brown, oblong to globose, ellipsoidal, subcylindrical, guttulate, or irregular, 0–1 - septate, thick-walled, smooth, catenate, 5.5–12 × 4.5–6 µm (avg. 8.1 × 5.2 μm, n = 30). Arthroconidia unknown. Sexual morph unknown.

Geographical distribution.

Guizhou Province, China.

Additional material examined.

CHINA • Guizhou, Guiyang, Huaxi District, Shiban Town , 26.46°N, 106.65°E, soil, 8 July 2022, Shuo-Qiu Tong, SQT 14 GoogleMaps .

GenBank numbers.

SQT 13 – SQT 14, ITS: PV 890028 – PV 890029, LSU: PV 890035 – PV 890036.

Notes.

Phylogenetic analysis showed that two new isolates (SQT 13 and SQT 14) clustered in a single subclade with high supported value (100 / 1) and are sister to S. album , S. assmuthi , S. aurantiacum , S. rodionovae , S. circinatum , and S. terrigenum (Figs 1 View Figure 1 , 2 View Figure 2 ). However, the distinctions between S. tongrenense and S. album , S. assmuthi , S. aurantiacum , S. rodionovae , S. circinatum , and S. terrigenum are provided in their respective notes. Scytalidium tongrenense was isolated from soil in a pepper cultivation area and is likely to have a saprophytic lifestyle.