Bract

bract

Modified, usually small, leaflike structure often positioned beneath a flower or inflorescence. What are often taken to be the petals of flowers are sometimes bracts—for example, the large, colourful bracts of poinsettias or the showy white or pink bracts of dogwood blossoms.

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bract

a specialized leaf, usually smaller than the foliage leaves, with a single flower or inflorescence growing in its axil

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bract [brakt]

(botany)

A modified leaf associated with plant reproductive structures.

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Bract 

a leaf in whose axil the flower develops; a leaf enveloping a flower shoot. Bracts are smaller than ordinary leaves and are reduced. Only in a few plants, such as sage, are they large and colorful. Sometimes, for example, in Cruciferae and dill, the bracts fall early.