- “Stalked Bacteria” is unusual shape of bacteria, example: Caulobacter crescentus
- Caulobacter has daughter cells . One daughter is a mobile “swarmer” cell that has a single flagellum at one cell pole that provides swimming motility.
- The other daughter, called the “stalked” cell has a tubular stalk structure protruding from one pole that has an adhesive holdfast material on its end, with which the stalked cell can adhere to surfaces.
- Swarmer cells differentiate into stalked cells after a short period of motility