Ectothiorhodospira

**Definition:** A genus of vibrioid or rod-shaped cells which are motile by polar flagella. Internal photosynthetic membranes are present as lamellar stacks and contain bacteriochlorophyll a or b and carotenoids. Growth occurs photoautotrophically under anaerobic conditions. (From Bergey's Manual of Determinative Bacteriology, 9th ed)

**Tree numbers:** - B03.440.425.410.405.500 - B03.660.250.145.500