Two New Edible Lyophyllum Species from Tibetan Areas, China

Abstract

Two new species, Lyophyllum yiqunyang and L. heimogu, that belong to the section Difformia of the genus Lyophyllum, are described based on collections from Tibetan areas, China. The two species are delicious edible low-temperature mushrooms and are widely collected and eaten by local people. Lyophyllum yiqunyang sp. nov. is saprotrophic and has medium-sized basidiomata, olive-grey pileus, cheilocystidia, absent pleurocystidia, globose to subglobose basidiospores (6.12–6.31 × 6.02–6.23 μm) and clamp connections at the pileus context, hymenophoral trama and stipe. Lyophyllum heimogu sp. nov. is saprotrophic and has a dark grey to olive pileus, medium-sized basidiomata and globose to subglobose basidiospores (5.31–5.63 × 5.22–5.41 μm). In the phylogenetic analyses, our two new species formed distinct clades that are well supported by posterior probabilities and bootstrap proportions. Detailed descriptions, colour photos, illustrations and a phylogenetic tree to show the positions of the two new species are presented.

Global diversity and biogeography of Lyophyllum inferred from amplicon datasets

“…Among the large fungal resources, Lyophyllum is an important fungal group, but it is difficult to obtain due to its strict growth conditions and the similarity of its pileus color to fallen leaves, which provides them with good camouflage, and this group includes many important edible and medicinal fungi, and the species diversity of Lyophyllum in China is not yet fully understood. Therefore, exploring and protecting China's Lyophyllum resources is significant for maintaining ecological balance and biodiversity (Li S. et al, 2023). In our research, we found that there may be more than 15 potential species of Lyophyllum in China, and more than half of them may be found in Qinghai.…”

Two New Lyophyllum Species from Yunnan, China

“…Larsson and Sundberg [10] provided ITS and LSU data, which provided more evidence for identifying species. Later, several Lyophyllum species were published based on ITS and LSU data [11][12][13][14].…”

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“…Among the large fungal resources, Lyophyllum is an important fungal group, but it is difficult to obtain due to its strict growth conditions and the similarity of its pileus color to fallen leaves, which provides them with good camouflage, and this group includes many important edible and medicinal fungi, and the species diversity of Lyophyllum in China is not yet fully understood. Therefore, exploring and protecting China's Lyophyllum resources is significant for maintaining ecological balance and biodiversity (Li S. et al, 2023). In our research, we found that there may be more than 15 potential species of Lyophyllum in China, and more than half of them may be found in Qinghai.…”