Yang,ZL (reprint author),Chinese Acad Sci,Key Lab Plant Divers & Biogeog East Asia,Kunming Inst Bot,Kunming 650201,Peoples R China.
Caloboletus has recently been erected to accommodate Boletus calopus and its allies. Our phylogenetic analyses based on four gene markers (ITS, nrLSU, tef1-alpha and rpb1) recognized six distinct species within the genus. Morphologically, the genus is characterized by the combination of the yellow hymenophore, smooth spores that are olive-brown in deposit, an interwoven pileipellis, a bluish color-change and a distinctly bitter taste of the context. A new species was described and a key to the six species of Caloboletus is provided. Members of Caloboletus are mainly distributed in subtropical and temperate zones in the Holarctic and are often associated with plants of Pinaceae and Fagaceae.
National Key Basic Research Program of China [2014CB954100]
; Chinese Academy of Sciences [KJZD-EW-L07]
; National Natural Science Foundation of China [NSFC: 31370252]
; CAS/SAFEA International Partnership Program for Creative Research Teams
; Rural and Environment Science and Analytical Services division (RESAS) in the Scottish Government