 The species was first described as Boletus collinitus by Elias Magnus Fries in 1838 . Otto Kuntze transferred it to the genus Suillus in his 1898 Revisio Generum Plantarum . In 1969 Dutch mycologist <unk> <unk> described the variety S. collinitus var. aureus ( as S. <unk> var. aureus ; S. <unk> is a synonym of S. collinitus ) based on a collection from Switzerland . The variety <unk> was described in 1998 by Giampaolo Simonini and colleagues from Italian collections . 
