Cacaoporus, a new Boletaceae genus, with two new species from Thailand

By

Vadthanarat, Santhiti
Lumyong, Saisamorn
Raspé, Olivier

Type

Article

Date of Publication

2019

Original Publication

MycoKeys

Volume

54

Pages

1-29

Subjects

3 new taxa , atp6 , Boletales , cox3 , Fungal diversity , multigene phylogeny , Neoboletus , Pulveroboletus group , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.54.35018

 

Abstract

We introduce a new genus, Cacaoporus, characterised by chocolate brown to dark brown basidiomata and hymenophore, tubes not separable from the pileus context, white to off-white basal mycelium, reddening when bruised, amygdaliform to ovoid spores and dark brown spore deposit. Phylogenetic analyses of a four-gene dataset (atp6, tef1, rpb2 and cox3) with a wide selection of Boletaceae showed that the new genus is monophyletic and sister to the genera Cupreoboletus and Cyanoboletus in the Pulveroboletus group. Two new species in the genus, C.pallidicarneus and C.tenebrosus are described from northern Thailand. Full descriptions and illustrations of the new genus and species are presented. The phylogeny also confirmed the reciprocal monophyly of Neoboletus and Sutorius, which further support the separation of these two genera.