Perhaps a Tulip?
Tea roses, tiger lily, trumpet vine, tulip and turtlehead are flowers. They begin with the letter t.
tulip Tigerlily Tuberose
tulip Tulip, Tuberose, Trumpet Flower
Tagetes.
Bird of Paradise and Bluebells are flowers. They begin with the letter b.
Umbrella plant, urginea and ursinia are flowers. They begin with the letter U.
Daisey's
Iris.
Nightshade
Daffodil.
impatients and iris
Carnation