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

The present study describes Hemiaustroboletus gen. nov. in the subfamily Austroboletoideae (Boletaceae). Hemiaustroboletus is supported by morphological and molecular data using LSU and RPB2 regions. Additionally, its geographic distribution and intraspecific variation were inferred using ITS sequences. The genus is characterised by pileate-stipitate basidiomata; purple, brown, reddish-brown, orange-brown to dark brown vinaceous pileus; whitish or lilac to vinaceous context and a subclavate stipe. Microscopically, it is characterised by ornamented, slightly verrucose, cracked to perforated brown basidiospores. Two species are described within the genus, Hemiaustroboletusvinaceobrunneus sp. nov. and H.vinaceus sp. nov. Hemiaustroboletusvinaceus sp. nov. is morphologically similar to Austroboletusgracilis, which suggests they may have been confused in the past. This study presents the phylogenetic placement, microscopic structures, detailed morphological descriptions and illustrations of both new species.

Aspectos sobre el uso y la distribución de Pycnoporus sanguineus (polyporaceae) en México / Aspects on the use and distribution of Pycnoporus sanguineus (Polyporaceae) in Mexico

Se presentan datos sobre el uso de Pycnoporus sanguineus (L:Fr.) Murr. en la necrosis de verrugas. En los basidiocarpos se determinó la presencia de los pigmentos ácido cinabarínico y cinabarina, por el método de cromatografía en placa fina. Este hongo es tropical y subtropical y se conoce de 24 entidades federativas de México