Psiloboletinus is an independent genus sister to Suillus

The genus Psiloboletinus was proposed by Rolf Singer in 1945 based on Phylloporus lariceti, a species that associates with Larix in the Altai Mountains of central and eastern Asia. However, this classification has been controversial due to the morphological similarity to known genera Boletinus and Fuscoboletinus. Because of the lack of fresh material to study, the phylogenetic position of Psiloboletinus has remained unknown since its publication. However, the recently described species Suillus foetidus reported from northeast China allows this issue to be reexamined and resolved. Through morphological observations and comparison, we find that S. foetidus is a heterotypic synonym of Ps. lariceti. Furthermore, Psiloboletinus should be retained as an independent genus sister to Suillus based on molecular phylogenetic evidence and morphological features. © 2020, © 2020 The Mycological Society of America.

Wu G.1 , Wu K.1, 2 , Qi L.-L.3 , Morozova O.V.4 , Alexandrova A.V. 5, 6 , Gorbunova I.A.7 , Li Y.8 , Liu J.-W.1 , Yang Z.L.1
Taylor and Francis Inc.
  • 1 CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
  • 2 University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
  • 3 Microbiology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, Guangxi 530007, China
  • 4 Komarov Botanical Institute of the Russian Academy of Sciences, Saint Petersburg, 197376, Russian Federation
  • 5 Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow, 119234, Russian Federation
  • 6 Peoples’ Friendship University of Russia (RUDN University), 6 Miklouho-Maclay Str, Moscow, 117198, Russian Federation
  • 7 Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences, 101 Zolotodolinskaya Str, Novosibirsk, 630090, Russian Federation
  • 8 Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, Jilin 130118, China
Larch; multilocus molecular phylogeny; Phylloporus; Suillaceae; taxonomy
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