Pseudosperma arenarium (Inocybaceae), a new poisonous species from Eurasia, based on morphological, ecological, molecular and biochemical evidence
MycoKeys August 30, 2022 Ya-Ya Yan, Jukka Vauras, Li-Na Zhao et al. 7 citations
A new mushroom species, Pseudosperma arenarium, is described from sandy soils under poplar and pine in northwestern China and northern Europe. It is identified by its robust form, nearly smooth cap, large spores, and unique DNA. Chemical tests show it contains muscarine, with toxin levels about five times higher in the cap (up to 4302 mg/kg) than in the stem (up to 929 mg/kg), indicating that eating different parts of the mushroom can cause varying severity of poisoning. Other toxins such as amatoxins, ibotenic acid, psilocybin, and psilocin were absent.