| erwinia | A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria whose organisms are associated with plants as pathogens, saprophytes, or as constituents of the epiphytic flora. (12 Dec 1998) |
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| erwinia carotovora | A species of gram-negative, facultatively anaerobic, rod-shaped bacteria that causes rotting, particularly of storage tissues, of a wide variety of plants and causes a vascular disease of carrot and potato plants. (12 Dec 1998) |
| erwinia chrysanthemi | A species of gram-negative, facultatively anaerobic, rod-shaped bacteria that causes vascular wilts on a wide range of plant species. (12 Dec 1998) |