Butyriboletus hainanensis (Boletaceae, Boletales), a new species from tropical China

Abstract

Butyriboletus hainanensis (Boletaceae, Boletales) is described as a new species from Hainan Province, a tropical region of China. It is morphologically characterized by a large, brown pileus with thick context and thin hymenophore, a blue-red-black color change of hymenophore and context, a yellow to brownish red stipe with faint reticulations, and an interwoven trichodermal pileipellis. Phylogenetic analyses of DNA sequences from partial 28S regions, the translation elongation factor 1-α gene (tef1α) and RNA polymerase II second largest subunit gene (rpb2) also confirm that B. hainanensis forms an independent lineage within Butyriboletus. Consequently, a description, color photos of fresh basidiomata and line-drawings of microstructures are presented.

New and noteworthy boletes from subtropical and tropical China

“…Zeng et al, But.pseudospeciosus Kuan Zhao & Zhu L.Yang, But.roseoflavus (Hai B.Li & Hai L.Wei) D.Arora & J.L.Frank, But.sanicibus D. Arora & J.L.Frank, But.subsplendidus (W.F. Chiu) Kuan Zhao et al, and But.yicibus D. Arora & J.L.Frank have been described from China (Arora and Frank 2014; Liang et al 2016; Wu et al 2016a). Herein, we describe another novel species.…”

“…Subtropical and tropical China is believed to be a biodiversity hotspot. Mycologists have paid much attention to boletes of the region in the past decade, and many taxa have been discovered (Bi et al 1997; Zeng and Yang 2011; Zeng et al 2012, 2013, 2014a, b, 2015a, b, 2016, 2017, 2018; Zang 2013; Liang et al2016, 2017, 2018; Chai et al 2018; Xue et al 2018). Among of them, many have been found to be as North American or European species (Bi et al 1997; Zang 2013), and recent studies have shown that species shared between subtropical/tropical China and North America/Europe are rare but that there are many common species between Japan and subtropical/tropical China (Zeng et al 2013, 2016, 2017).…”

“…Many of them are interesting and important for their mycorrhizal relationships with trees, edibility, medicinal value, and toxicity (Wang et al 2004; Roman et al 2005; Wu et al 2013; Chen et al 2016). In China, species of Boletaceae have received much attention by mycologists, and many taxa have been discovered across the country (Chiu 1948; Zang 2013; Zeng et al 2013, 2016, 2017; Liang et al 2016, 2017; Wu et al 2016a). However, the diversity of species still remains poorly known in subtropical and tropical China, a biodiversity hotspot.…”

Austroboletus brunneisquamus (Boletaceae, Boletales), a New Ectomycorrhizal Fungus from a Tropical Rainforest, China

“…Baker) Wolfe and A. subvirens (Hongo) Wolfe were reported in previous studies [1,[12][13][14][15]. Hainan, a tropical area covered mostly by rainforests, is considered as a hotspot of biodiversity, and many new taxa of macrofungi were described from the region in the past [16][17][18][19][20][21][22][23][24][25]. With further investigations, more new taxa are expected to be uncovered.…”

Neoboletus antillanus sp. nov. (Boletaceae), first report of a red-pored bolete from the Dominican Republic and insights on the genus Neoboletus

“…The separation of Neoboletus from Boletus s. str. and its establishment at the generic rank is phylogenetically strongly supported (Binder and Hibbett 2006, Mello et al 2006, Halling et al 2007, 2015; Desjardin et al 2009, Li et al 2011, Zeng et al 2012, Gelardi et al 2013, 2015; Nuhn et al 2013, Trappe et al 2013, Arora and Frank 2014, Vizzini et al 2014, Wu et al 2014, Zhao et al 2014, 2015; Zhu et al 2014, Chakraborty et al 2015, Simonini and Vizzini 2015, Smith et al 2015, Urban and Klofac 2015, Henkel et al 2016, Liang et al 2016, Orihara and Smith 2017), the genus being tentatively placed in the “Pulveroboletus group” (Wu et al 2014), although its taxonomic placement within the Boletaceae still remains uncertain (Nuhn et al 2013, Wu et al 2014).…”