Six New Species of Leucoagaricus (Agaricaceae) from Northeastern China
Yunrui Ma, Tie-Zhi Liu, Xiaodan Yu, Tie-Zheng Wei, Zai-Wei Ge
Abstract
Six new species, Leucoagaricus albosquamosus, Leucoagaricus atroviridis, Leucoagaricus aurantioruber, Leucoagaricus candidus, Leucoagaricus centricastaneus and Leucoagaricus virens, collected from northeastern China are described based on morphological characters and molecular evidence. Illustrations of fresh basidiomata and line drawings of key anatomical characters are provided. A phylogenetic tree inferred from internal transcribed spacer (ITS) region and large subunit ribosomal RNA gene (LSU) sequences shows that three of the new taxa are nested within the section Leucoagaricus and two of the new taxa are in the subgenus Sericeomyces, whereas the other new taxus is clustered with Leucoagaricus viriditinctus and Leucoagaricus irinellus, forming a clade that does not fit in any known section.