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SUMMARY
Since S. F. Gray's Natural Arrangement of British Plants has been found to be post-Friesian, it becomes desirable, if not necessary, to consider his generic names.
It is proposed to adopt Suillus Micheli ex S. F. Gray in place of Ixocomus Quélet, and Leccinum S. F. Gray in place of Trachypus Bataille.
It is also proposed to consider Versipellis Quélet a nomen ambiguum in order that it may not supersede Xerocomus Quélet, since the word Versipelles has long been associated with the versipellis-scaber group of species.
A new genus Leucogyroporus is proposed for four newly described Florida species originally placed in Gyroporus or the Friesian and Peckian Cariosi of Boletus, with tubes not free, stipe solid and spores narrowly elliptical and white or nearly white in deposit.