Two new species of Hortiboletus (Boletaceae, Boletales) from China
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ORIGINAL ARTICLE
Two new species of Hortiboletus (Boletaceae, Boletales) from China Hui-Jing Xie 1 & Wen-Fei Lin 2 & Shuai Jiang 3 & Rou Xue 1 & Lu-Ling Wu 1 & Yu-Zhuo Zhang 1 & Zhi-Qun Liang 4 & Nian-Kai Zeng 1 & Ming-Sheng Su 5 Received: 29 June 2020 / Revised: 22 September 2020 / Accepted: 24 September 2020 # German Mycological Society and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Two new species of Hortiboletus (Boletaceae, Boletales), viz. H. arduinus and H. napaeus, are described based on morphological and molecular data. Detailed descriptions, color photographs of fresh basidiomata, and line drawings of microscopic features of the two new taxa are presented. In addition, a key to all known species of Hortiboletus in the world is provided. Keywords Bolete . Molecular phylogeny . Morphology . New taxa . Taxonomy
Introduction Hortiboletus Simonini et al. (Boletaceae, Boletales), typified by H. rubellus (Krombh.) Simonini et al., was erected recently and is supported by phylogenetic analyses (Nuhn et al. 2013; Wu et al. 2014, 2016). It is a small genus with only eight taxa known worldwide (Biketova 2015; Dima 2015; Vizzini 2015; Das et al. 2016; Wu et al. 2016; Naseer et al. 2019). Interestingly, some species of Hortiboletus are distributed in parks, gardens, and flowerbeds, unlike most boletes species, which grow in forests (Smith and Thiers 1971; Gelardi 2009; Vizzini 2015). A collection identified as H. rubellus from
Pakistan has been demonstrated to have strong activity against different pathogenic fungi (Batool et al. 2019). In addition, H. rubellus is believed to be edible and have anticancer value (Dai and Yang 2008; Dai et al. 2010). Two new species, viz. H. amygdalinus Xue T. Zhu & Zhu L. Yang and H. subpaludosus (W.F. Chiu) Xue T. Zhu & Zhu L. Yang, have been described in China (Wu et al. 2016) besides European H. rubellus (Li and Song 2003). More Hortiboletus species are expected to be identified with additional field investigations. Some Hortiboletus samples were recently encountered. Morphological and molecular phylogenetic analyses were used to further demonstrate the species diversity of the genus.
Section Editor: Zhu-Liang Yang * Zhi-Qun Liang [email protected]
Materials and methods
* Nian-Kai Zeng [email protected]
Morphological studies
1
Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical Herbs, School of Pharmacy, Hainan Medical University, Haikou 571199, China
2
Institute of Edible and Medicinal Fungi, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
3
Hainan Yinggeling National Nature Reserve, Baisha 572800, China
4
College of Science, Hainan University, Haikou 570228, China
5
Key Laboratory of Modern Preparation of TCM of Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
The specimens were described and photographed in the field. Then, dry specimens were deposited at the Fungal Herbarium of Hain
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