History: < L.A. Egorova (Thermus flavus). Isolated from: Hot spring of Kamchatka; Russia, Kamchatka (4231). Cultivation conditions: Medium 39, 70°C.
Other numbers: R.A.D. Williams strain G. History: < R.A.D. Williams. Isolated from: Geysir, hot spring; Iceland. Cultivation conditions: Medium 39, 70°C.
Other numbers: R.A.D. Williams strain R. History: < R.A.D. Williams. Isolated from: Hveragerdi, hot spring; Iceland. Cultivation conditions: Medium 39, 70°C.
Other numbers: M. Pìèková Pì 01. History: < M. Pìèková. Isolated from: Hot spring "Vøídlo"; Czech Republic, Karlovy Vary (5734). Additional information: Characteristics (5846). Cultivation conditions: Medium 39, 60°C.
Other numbers: ATCC 31674, H.W. Morgan T351. History: < J.A. Hudson. Isolated from: Hot spring; New Zealand, Rotorua. Additional information: Production of extracellular protease (Caldolysin) (5789). Cultivation conditions: Medium 39 or 88, 70°C.