Abstract
Boletus albobrunnescens and B. austroedulis are described as new species in section Boletus from Thailand and Australia respectively. The former is easily characterized by the pure white basidiomata that stain brown. Boletus austroedulis has a gray-brown, slightly rugulose pileus with hymeniform pileipellis producing pileocystidia, and the stipe is only apically reticulate if at all. These new species represent ancient lineages inferred from prior molecular phylogenetic analyses.
Acknowledgments
Grants from the National Science Foundation (USA), DEB-0414665 and DEB-1020421 to REH, and DEB-0118776 to DED are gratefully acknowledged. Logistical support from the Queensland Herbarium (BRI) significantly aided field studies in Queensland. A collecting trip to northern Queensland in Feb 1992, organized by N. Malajczuk, was sponsored by the Australian Center for International Agricultural Research (ACIAR). M. Gelardi (Rome) kindly informed us of the Ubon Ratchathani survey. KS provided a materials transfer agreement that allowed duplicate specimens to be deposited in US Herbaria.