 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 H.S.C. Huijsman described the variety S. collinitus var. aureus ( as S. fluryi var. aureus ; S. fluryi is a synonym of S. collinitus ) based on a collection from Switzerland . The variety velatipes was described in 1998 by Giampaolo Simonini and colleagues from Italian collections . 
