Defining Xerocomus s.str. (Boletaceae) in Malesia

Abstract

Spores from Corner’s (1972, 1974) type specimens of Xerocomus (sensu Horak, 2011) housed at Edinburgh herbarium (E) were imaged for the first time, using Scanning Electron Microscopy (SEM) to ascertain the presence of Xerocomus sensu Šutara (2008) in Malesia. The following taxa Boletus chlamydosporus, B. chrysops, B. lubricus, B. microcarpus, Xerocomus microcarpoides and Phylloporus rufoflavipes were found to have bacillate ornamentations. New combinations and name changes have been proposed.