1. Perennial European bellflower with racemose white or blue flowers
   - peach bells, willow bell, Campanula persicifolia

Type of: bellflower, campanula

• genus Truncocolumella
• genus Tsuga
• genus Tuber
• genus Tubercularia
• genus Tulestoma
• genus Tulipa
• genus Tulostoma
• genus Tunga
• genus Tupaia
• genus Tupinambis
• genus Turbatrix
• genus Turdus
• genus Turnix
• genus Turreae
• genus Turritis
• genus Tursiops
• genus Tussilago
• genus Tylenchus
• genus Tympanuchus
• genus Typha
• genus Tyrannosaurus
• genus Tyrannus
• genus Tyto
• genus Uca
• genus Uintatherium