Mycobiology.  2021 Feb;49(1):24-45. 10.1080/12298093.2020.1843221.

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

Affiliations
  • 1Anguillara Sabazia, Italy
  • 2Pordenone, Italy
  • 3National Botanical Garden of Santo Domingo, Santo Domingo, Dominican Republic
  • 4Department of Life Science and Systems Biology, University of Turin, Torino, Italy
  • 5USDA Forest Service, Northern Research Station, Center for Forest Mycology Research, Madison, WI, USA

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.

Keyword

Boletales; molecular phylogeny; Greater Antilles; neotropical boletes; taxonomy
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