Outstanding Pinkish Brown-Spored Neotropical Boletes:Austroboletus subflavidusandFistulinella gloeocarpa(Boletaceae, Boletales) from the Dominican Republic

Abstract

The occurrence of Austroboletus subflavidus and Fistulinella gloeocarpa is documented from the Dominican Republic. The latter species is reported for the first time outside its original locality in Martinique, extending the geographic range for this uncommon pinkish-spored bolete. A detailed morphological description is provided for each species and accompanied by color pictures of fresh basidiomes in habitat and line drawings of the main anatomical features. Both species represent independent lineages within their respective genera based on phylogenetic inference. In addition, A. subflavidus clusters in a sister lineage to the core Austroboletus clade ( Austroboletus clade I) here named as Austroboletus clade II. In order to confirm the accuracy of species identification, their identity and relationships were subjected to multilocus phylogenetic analyses of three gene markers (ITS, nrLSU, RPB2) including genetic material already available in public databases. Austroboletus subflavidus is a widely distributed species in North and Central America, whereas F. gloeocarpa is apparently highly localized and seems to appear sparingly in the Dominican Republic, Martinque, and southern Florida. Comparisons with morphologically similar and molecularly inferred allied species are also presented and discussed.

Veloporphyrellus latisporus (Boletaceae), a new species from moist temperate forests of Pakistan

“…The clustering of some Austroboletus gracilis sequences within the Veloporphyrellus is also dubious. Similar findings were also reported by Wu et al (2016) and Gelardi et al (2020). As suggested by Wu et al (2016), these sequences of A. gracilis might represent a Veloporphyrellus species submitted with wrong identity.…”

“…According to the studies of Wu et al (2016) and Gelardi et al (2020), Velporphyrellus is polyphyletic. Li et al (2014) also reported that species of Veloporphyrellus nested within three different clades.…”

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

“…Moreover, A. brunneisquamus is also morphologically similar to A. dictyotus, A. fusisporus and A. subflavidus (Murrill) Wolfe. However, A. dictyotus, originally discovered in Indonesia, has a larger basidioma (pileus up to 11 cm), larger basidiospores measuring (11-)13-16 × (6-)7-8.5 μm with reticulations, and a pileipellis in the form of a trichoderm [1,2]; A. fusisporus, originally discovered in Japan, has a smaller pileus with a viscid surface, large basidiospores measuring 13.5-18.5 × 8-11 μm with subcylindrical ornamentation, and a trichodermium pileipellis [1,43]; A. subflavidus has longer basidiospores measuring 13.1-19.5 × 5.5-8.7 μm with Qm = 2.26, a pileipellis in the form of a trichoderm, and a distribution in North America-Central America-northern South America [5]. Molecular evidence provided in this study also indicated that A. brunneisquamus is genetically distant from A. dictyotus and A. fusisporus, respectively, and it is somewhat related to A. subflavidus, as these two taxa belong to the same clade (not species level) (Figure 1).…”

“…Austroboletus (Corner) Wolfe (Boletaceae, Boletales), typified by A. dictyotus (Boedijn) Wolfe, is characterized by a pinkish pore surface at maturity, context usually unchanging in color when injured, a stipe, often with conspicuous reticulation, fusiform or amygdaliform basidiospores with verrucose, warted, irregularly pitted, cristate, subcylindrical, ridged or subreticulate ornamentations, and forming ectomycorrhizae with Fagaceae, Pinaceae and Dipterocarpaceae [1][2][3][4][5]. Species of Austroboletus are mostly distributed in tropical regions [6][7][8][9][10][11].…”

Hemiaustroboletus, a new genus in the subfamily Austroboletoideae (Boletaceae, Boletales)

“…In recent years, various authors ( Wu et al 2014 ; Wu et al 2016 ; Gelardi et al 2020 ; Kuo and Ortiz-Santana 2020 ) have recognised the polyphyly of Austroboletus , which is divided into the Austroboletus s.s., Austroboletus s.l. and the A.…”