Effusibacillus lacus

Effusibacillus lacus is a species of Gram positive, facultatively anaerobic, thermophilic bacterium. The cells are rod-shaped and form spores. It was first isolated from freshwater lake sediment from Lake Mizugaki, Japan. The species name is derived from "lacus" (of a lake).
The species was among the first grouped into the newly create genus "Effusibacillus", along with two other species that were reclassified from "Alicyclobacillus", "E. consociatus" and "E. pohliae". "E. lacus" is the type strain for the genus.
The optimum growth temperature for "E. lacus" is 50-52 °C, and can grow in the 28-60 °C range. Its optimum pH is 7.25-7.50, and grows in pH range 7.0-8.5.