Hygrophorus hedrychii (Velen.) K. Kult, Česká Mykol. 10 (4): 232 (1956)
Fig. 5
Known distribution.
Heilongjiang, Inner Mongolia Autonomous Region, Shanxi and Sichuan Provinces, China; Europe.
Habit and habitat.
Scattered to gregarious in broadleaf forests dominated by Betula. In China, it occurs at elevations of 1000–3500 m; fruiting from late summer to autumn (August – September).
Material examined.
Sweden • Borgsjö sn., 30 August 1993, R. Watling 25546 (E 00905335). United Kingdom • England: North-West Yorkshire, 21 September 1986, R. Watling 22946 (E 00905313); • Scotland: South Aberdeenshire, elev. ca. 100 m, 3 September 1985, R. Watling 18635 (E 00905314). China • Heilongjiang Province: Suifenhe City (绥芬河市), Suifenhe National Forest Park (绥芬河国家森林公园), 26 September 2009, T. Z. Wei 1135 (HMAS 250535); • Inner Mongolia Autonomous Region: Chifeng City (赤峰市), Ma’anshan National Forest Park (马鞍山国家森林公园), elev. unknown, 2 September 2019, T. Z. Liu & Y. M. Gao s. n. (CFSZ 21431); • Linxi County (林西县), Dalengshan Forest Farm (大冷杉林场), 44°5'22"N, 118°1'12"E, elev. 1300 m, 5 September 2018, T. Z. Wei & Z. W. Peng & J. Y. Zhuang & T. Z. Liu 8883 (HMAS 281316), T. Z. Wei & Z. W. Peng & J. Y. Zhuang & T. Z. Liu 8879 (HMAS 255531), T. Z. Wei & Z. W. Peng & J. Y. Zhuang & T. Z. Liu 8866 (HMAS 290140).
Notes.
Hygrophorus hedrychii, originally described from Europe, is also widely distributed in China, where it is recognised as an edible mushroom in the Inner Mongolia Autonomous Region (Wang et al. 2020; this study). This species is distinguished by its white pileus and cream-coloured lamellae that develop pale ochraceous-pink tones at maturity. It produces ellipsoid to oblong, occasionally cylindrical basidiospores. Spore dimensions vary geographically: Chinese specimens measure 8–9 × 4–5 μm (Q = 1.6–2.0), European specimens 8–10 × 5–6 μm (Q = 1.49–1.96) and cylindrical forms 10–12.6 × 3–4 μm (Q = 2.5–4.25). Ecologically, it shows a wide elevational range (100–3500 m), occurring at low to middle elevations in Europe and north China (Heilongjiang, Inner Mongolia, Shanxi) and extends to high-altitude regions in southwest China (Sichuan) (Larsson and Jacobsson 2004; Campo 2015; Wang et al. 2020, 2023; this study).
Publication Date: 2026-06-17