Three Novel Species of Russula Pers. Subg. Compactae (Fr.) Bon from Dinghushan Biosphere Reserve in Southern China

Abstract

Three novel species of Russula Pers. subg. Compactae (Fr.) Bon from southern China are described with morphological evidence and phylogenetic analyses based on ITS and the concatenated partial LSU, mtSSU, rpb1, rpb2 and tef1 gene sequences. All three species possess sparse and broad lamellae. Russula latolamellata Y.Song & L.H.Qiu, sp. nov., is characterized by its cracking, black-tan pileus, scarlet-turning context on bruising and absence of pileocystidia and caulocystidia. Russula nigrocarpa S.Y.Zhou, Y.Song & L.H.Qiu, sp. nov., can be distinguished by its off-white lamellae, small basidiospores, hymenial cystidia and pileocystidia of various forms, often with forked apices and by its gelatinous pileipellis. Russula ochrobrunnea S.Y.Zhou, Y.Song & L.H.Qiu, sp. nov., is characterized by its cracking, grayish brown pileus with striate margin, light-brown lamellae whose edges turn dark-brown when mature, small basidiospores and slightly flexuous ormoniliform hymenial cystidia. Their detailed morphological features and phylogenetic positions are discussed and compared among closely related species.

Species of Russula subgenera Archaeae, Compactae and Brevipedum (Russulaceae, Basidiomycota) from Dinghushan Biosphere Reserve

“…Three species with widely spaced gills in this subgenus have previously been reported from DHSBR, namely R. latolamellata Y. Song (Zhou et al 2020). A new species with crowded gills, R. reticulofolia Y.Song sp.…”

“…For general geographical, ecological and climatic characteristics of this region in southern China we refer to Song et al (2018b). During the past few years a total of 46 species of Russula have been documented from this subtropical Biosphere Reserve, including 20 species new to science (Das et al 2017;Zhang et al 2017;Song et al 2018aSong et al , 2018bSong et al , 2021Li et al 2019;Yuan et al 2019;Zhou et al 2020;Song 2022). In this contribution, we will focus on additional species recorded for the subgenera Archaeae, Brevipedum and Compactae.…”

Two new species of Russula subgenus Heterophyllidia (Russulaceae, Russulales) from Yanshan Mountains, North China

“…In the last 10 years, 59 new species European Journal of Taxonomy 861: 185-202 (2023) of Russula have been described worldwide. Of them, 31 species belong to the subgenus Heterophyllidia (Li et al 2013(Li et al , 2018(Li et al , 2020(Li et al , 2021a(Li et al , 2021bHyde et al 2019;Deng et al 2020;Song et al 2020Song et al , 2021Song et al , 2022Zhou et al 2020;Chen et al 2021aChen et al , 2021bChen et al , 2021cChen et al , 2022.…”

Species of Russula subgenus Heterophyllidiae (Russulaceae, Basidiomycota) from Dinghushan Biosphere Reserve

“…DHSBR is considered as a region highly diverse in macrofungi (Bi et al 1994), and possesses three typical forest formations representing the early, middle and late succession stages of the forest: coniferous forest, mixed coniferous and broad-leaf forest, and broad-leaf forest. During the macrofungi explorations carried out since 2014, eighteen new species and one epitype of Russula (Das et al 2017;Zhang et al 2017;Song et al 2018aSong et al , 2018bSong et al , 2021Li et al 2019;Yuan et al 2019;Zhou et al 2020), two new species of Lactarius Pers. (Wang et al 2018) and three new species and one new variety of Lactifluus (Pers.)…”