hydrogenibacillus schlegelii hydrogenibacillus schlegelii hydrogenibacillus schlegelii is a gram-positive species of bacteria. strains of this species were originally isolated from a lake (le loclat) near st-blaise, neuchâtel, switzerland. the species is thermophilic; strains isolated from soil in antarctica were found to grow at temperatures between 59 and 72 °c. hydrogenibacillus schlegelii scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: hydrogenibacillus species: h. schlegelii binomial name hydrogenibacillus schlegelii(schenk and aragno 1981) kämpfer et al. 2013 synonyms bacillus schlegelii schenk and aragno 1981