Hygrophorus queletii Bres., Fung. trident. 1: 11 (1881)
Fig. 9
Known distribution.
Northern China (Inner Mongolia), Russia (GenBank Acc. No. MT 302572) and Europe, where this species was originally described.
Habit and habitat.
Scattered to gregarious, occurring under Larix decidua; at elevations of 1000–1700 m; fruiting in autumn (September – October).
Material examined.
China • Inner Mongolia Autonomous Region, Chifeng City (赤峰市), Keshiketeng Banner (克什克腾旗), Huanggangliang National Forest Park (黄冈梁保护区), 43°36'39"N, 117°25'13"E, elev. 1490 m, 3 September 2018, T. Z. Wei & Z. W. Peng & J. Y. Zhuang & T. Z. Liu 8705 (HMAS 290046).
Notes.
Hygrophorus queletii was originally described from European material (Bresadola 1881–1990; Candusso 1997) and has a broad Eurasian distribution (Candusso 1997; Campo 2015; Wang et al. 2023). The species is distinguished by its off-white basidiomata, often with faint to distinct pinkish tinges, oblong basidiospores measuring 9–10.5 (– 11) × 5–6.8 μm, [Q = (1.44 –) 1.54–2 (– 2.1), Q m = 1.82 ± 0.15], a stipitipellis with abundant gelatinous particles and the absence of clamp connections. It is likely associated with Larix decidua (Candusso 1997; Campo 2015; Wang et al. 2023; this study). The basidiospore dimensions of the Chinese specimen examined in this study align with those reported by Candusso (1997: 9–12.5 × 5–6.8 μm), but differ slightly from the measurements (7.0–10.0 × 4.0–5.5 μm) provided by Wang et al. (2023), possibly reflecting intraspecific variation. Notably, the absence of clamp connections — a feature shared with H. adiaphorus Hesler & A. H. Sm. / H. betulae K. Bendiksen & E. Larss. and H. glutinosus Peck — is rare within the genus Hygrophorus (Hesler and Smith 1963; Candusso 1997; Larsson and Bendiksen 2020; Wang et al. 2023; this study).
Publication Date: 2026-06-17