fusarium acutatum fusarium acutatum fusarium acutatum is a fungus species of the genus fusarium. fusarium acutatum can cause gangrenous necrosis on the feet from diabetic patients. fusarium acutatum produces fumonisin b1, fumonisin b2, fumonisin b3 and 8-o-methyl-fusarubin. fusarium acutatum scientific classification kingdom: fungi division: ascomycota class: sordariomycetes order: hypocreales family: nectriaceae genus: fusarium species: f. acutatum binomial name fusarium acutatumnirenberg & o'donnell 1998