Hygrophorus pallidoflavodiscus C. Q. Wang, X. L. Gao & T. H. Li, Mycosphere 14: 1769 (2023)
Fig. 7
Known distribution.
Yunnan Province, China.
Habit and habitat.
Solitary or scattered in mixed broadleaf-conifer forests dominated by Ericaceae, Fagaceae, Theaceae and Pinaceae; likely associated with Pinus densata and P. yunnanensis; occurs at elevations of 2200–3300 m, fruiting during summer and autumn (July – September).
Material examined.
China • Yunnan Province: Eryuan County (洱源县), Ma’an Mountain (马鞍山), Huaneng Wind Farm (华能风电场), Shiputang station (石蒲塘站), elev. 3307 m, 24 August 2014, S. D. Yang 106 (MHKMU YSD-106); • Jianchuan County (剑川县), Shibao Mountain (石宝山), in broadleaf forests dominated by Ericaceae and Fagaceae, 26°23'46"N, 99°50'53"E, elev. 2500–2600 m, 19 August 2014, L. P. Tang 1704 (MHKMU TLP-1704); • ibid., 20 August 2014, L. P. Tang 1745 (MHKMU TLP-1745); • ibid., 14 September 2019, M. Mu 461 (MHKMU MM-461); • Lijiang City (丽江市), Gucheng District (古城区), Da Dong Town (大东乡), 18 August 2010, Q. Zhao 929 (HKAS 69650); • Yulong County (玉龙县), Lijiang Observatory (丽江天文台), 26°42'2"N, 100°1'58"E, elev. 3210 m, 20 August 2020, L. P. Tang 3291 (MHKMU TLP-3291); • ibid., 21 August 2020, X. Na 158 (MHKMU NX-158); • Shangri-La City (香格里拉市), Sanba Town (三坝乡), Haba Snow Mountain (哈巴雪山), Mianshaba (绵沙坝), elev. 2800 m, 27 August 2020, H. Y. Huang 938 (MHKMU HHY-938); • Yongping County (永平县), National Highway 320, elev. 2200 m, 30 July 2009, Wu 54 (HKAS 57585).
Notes.
Hygrophorus pallidoflavodiscus is distinguished by its slender basidiomata, with a pileus 2–6 cm diam. and a stipe measuring 6–9.5 × 0.5–1.3 cm. The pileus disc is pale grey to yellowish-white, and the context and lamellae may occasionally turn orangish when damaged. Additional diagnostic features include subdistant lamellae (35–50 full lamellae per pileus), ellipsoid to oblong basidiospores (9–11 × 5–6.2 μm, Q = 1.50–1.92), a solitary to scattered habit, a likely association with Pinus densata and P. yunnanensis and a distribution so far restricted to the subalpine belt (2200–3300 m) of Yunnan Province, south-western China (Wang et al. 2023; this study).
Publication Date: 2026-06-17