| Cross Index | Flectobacillus | 
| superset | Prokaryote, Eubacteria Gram-Negative curved bacteria | 
| Compare | Ancylobacter
        aquaticus , "Brachyarcus thiophilus",
        Cyclobacterium
        marinum, Flectobacillus, Meniscus glaucopis, "Pelosigma", Runella slithyformis, Spirosoma linguale | 
| Contrast | Archaea | 
| Subset | 
| Morphology | Flectobacillus | 
| CELLULAR | 
| Staining | Gram-negative. | 
| Morphology | Rigid straight to curved rods, the degree of curvature varying among individual cells with a culture. The most abundantly occurring are cells in the shape of the letter C or a closed ring. The cells measure 0.3-1.0 um wide by 1.5-5.0 um long. Long sinuous filaments up to 50 um long may be present. Overlapping of the ends of a cell forms rings 0.8-10.0 um in outer diameter. Coils or helices may be present. | 
| Motility | Non motile. | 
| Specialized structures | Resting stages are not known. | 
| Division | 
| COLONIAL | 
| Solid surface | 
| Liquid | 
| Growth Parameters | Flectobacillus | 
| PHYSIOLOGICAL | 
| Tropism | |
| Oxygen | Obligate aerobes, possessing a strictly respiratory type of metabolism with oxygen as the terminal electron acceptor | 
| pH | |
| Temperature | |
| Requirements | |
| Products | |
| Enzymes | |
| Unique features | 
| ENVIRONMENTAL | 
| Habitat | |
| Lifestyle | |
| Pathogenicity | 
| Distribution | 
| Genome | Flectobacillus | 
| G+C Mol % | 34-40 | 
| Reference | Flectobacillus | 
| First citation | Larkin,J.M., P.M.Williams and R.Taylor (1977) Taxonomy of the genus Microcyclus Orskov 1928: Reintroduction and emendation of the genus Spirosoma Migula 1894 and proposal of a new genus Flectobacillus IJSB 27:147-156 | 
| The Prokaryotes | p | 
| Bergey's Systematatic | p 129 J.M. Larkin and R. Borrall | 
| Bergey's Determinative | p 66 | 
| References |