Acidiphilium

The genus contains 6 species (including basonyms and synonyms), namely^[2]

• A. acidophilum ((Harrison 1983) Hiraishi et al. 1998; Neo-Latin noun acidum (from Latin adjective acidus, sour), an acid; Neo-Latin neuter gender adjective philum (from Greek neuter gender adjective philon (φίλον)), friend, loving; Neo-Latin neuter gender adjective acidophilum, acid loving.), this species used to known as Thiobacillus acidophilus^[3]
• A. angustum (Wichlacz et al. 1986; Latin neuter gender adj, angustum, narrow, small, with respect to nutritional versatility.)^[4]
• A. cryptum (Harrison 1981, (Type species of the genus).; Neo-Latin neuter gender adjective cryptum (from Greek noun adjective krupton [sic]), hidden.)^[5]
• A. multivorum (Wakao et al. 1995; Latin adjective multus, many; Latin v. voro, to eat, devour; Neo-Latin neuter gender adjective multivorum, devouring many kinds of substances.)^[6]
• A. organovorum (Lobos et al. 1986; Neo-Latin pref. organo- (from Greek adjective organikos, of or pertaining to an organ), pertaining to organic chemical compounds; Latin v. voro, to eat, devour; Neo-Latin neuter gender adjective organovorum, devouring organic compounds.)^[7]
• A. rubrum (Wichlacz et al. 1986; Latin adjective ruber -bra -brum, red; Latin neuter gender adjective rubrum, red colored.)^[4]Acidocella aminolytica and Acidocella facilis used to be in this genus.^[8]

• Bacterial taxonomy
• Microbiology