| rhodospirillum | A genus of gram-negative, spiral bacteria that possesses internal photosynthetic membranes. Its organisms divide by binary fission, are motile by means of polar flagella, and are found in aquatic environments. (12 Dec 1998) |
|---|---|
| rhodospirillum rubrum | Vibrio- to spiral-shaped phototrophic bacteria found in stagnant water and mud exposed to light. (12 Dec 1998) |