Russula rubiginosus sp. nov. in Russula subsect. Maculatinae from Heilongjiang Province, Northeast China

Abstract

Russula rubiginosus sp. nov. (Subsect. Maculatinae) associated with Quercus mongolica is described and illustrated based on phylogenetic analyses of internal transcribed spacer (ITS) ribosomal DNA sequences and morphological evidence. This species is characterized by the rusty spots on the pileus and stipe, an acrid taste, a yellow spore print, smaller basidiospores, and abundant cystidia in pileipellis and stipitipellis. Furthermore, the morphological characteristics were described in detail and compared with R. globispora and R. subrubescens.

Four new species of Russula from the Xizang Autonomous Region and other provinces of China

“…Since 2006, at least 68 new species have been published for the crown clade of subg. Russula , 48 of which are from Asia, and 23 new species have been described for this clade from China, demonstrating the extraordinary species richness of this clade of the Russula crown clade (Li et al 2012 , 2013a , 2013b , 2015 , 2016 ; Jiang et al 2018 ; Li et al 2018a , 2018b , 2021 ; Caboň et al 2019 ; Song et al 2021 ; Li 2022 ; Zhou et al 2022 ). Members of Russula crown clade mostly have unchanging, yellowing, browning, reddening, greying, or blackening of context when bruised, sometimes with distinct disagreeable to agreeable smell, mild to strongly acrid tasted context, white to yellow spore print (Buyck et al 2018 ).…”