New Edible Mushroom Species Discovered in Southwestern China

A team of Chinese mycologists added two fresh entries to the genus Laccaria, a group of ectomycorrhizal fungi that are important both ecologically and economically ¹.net]. The study, published in MycoKeys volume 139 (pages 213–249), lists Guo Zhao, Yi‑Han Qu, Li‑Yan Tang, Juan Zhang, Hao‑Nan Suo, Kai‑Yang Niu, Zong‑Long Luo, Han‑Bing Song, and Song‑Ming Tang as authors and reports findings from southwestern China ¹.net].

The first new species, Laccaria daliensis, has a pale orange to grayish‑orange pileus and similarly colored lamellae; its stipe is modestly developed but clearly present. The second addition, Laccaria violaceonana, shows medium‑sized fruit bodies with deep purple basidiomata; its stipe is equal in width throughout and ends in an enlarged base. These macroscopic distinctions were confirmed through detailed microscopic examination of spore size, shape, and ornamentation.

To substantiate the taxonomic separation, the researchers assembled a concatenated dataset comprising four genetic markers: the internal transcribed spacer region (ITS1–5.8S–ITS2) of nuclear ribosomal DNA (nrITS), the large subunit ribosomal RNA gene (nrLSU), the RNA polymerase II subunit 2 gene (rpb2), and the translation elongation factor 1‑α gene (tef1-α) ¹.net]. Phylogenetic trees generated via maximum likelihood and Bayesian inference revealed nine examined specimens clustering into four well‑supported clades. Two of those clades corresponded to the newly described species, while the remaining two matched previously known Laccaria taxa, confirming that the new forms are distinct lineages within the genus ¹.net].

The discovery underscores the rich fungal diversity still awaiting documentation in China’s temperate forests. The authors note that both Laccaria daliensis and Laccaria violaceonana exhibit ecological traits typical of their family—forming ectomycorrhizal associations with tree roots—which may have implications for forest management and conservation planning. Because many Laccaria species are edible, these findings expand the potential repertoire for mushroom foragers seeking novel culinary options.

Expert commentary highlights how such taxonomic work feeds directly into foraging practice: “Adding new species to an economically valuable group like Laccaria not only enriches biodiversity records but can inform sustainable harvesting strategies,” they said. They added that detailed morphological descriptions aid field identification, especially when combined with genetic data that clarifies relationships among similar-looking fungi ¹.net].

The publication appears online at ² where interested readers can access full figures, specimen vouchers, and DNA sequence accession numbers. The authors’ meticulous approach demonstrates how integrative methods—combining morphology, multi‑locus phylogeny, and ecological context—are essential in modern fungal discovery.