Boletus

The first genus in the book with pores and tubes; tubes are easily separated from the cap, helping to distinguish these from stemmed polypores, which can be similar. The caps are normally dry, or slightly viscid in wet weather, never glutinous. Many stems carry small, coloured dots or a network (reticulation); there is no ring. Most are edible and good, but take care with any with red or orange pores. All but two species grow on the ground with trees.