The Probert Encyclopaedia of Nature

BRACT

In botany, a bract is a specialized, modified or reduced leaf with a single flower or inflorescence growing in their axil, and thus distinguished from the ordinary leaf, from the axil of which the leaf-bud proceeds. It differs from other leaves in shape or colour, and is generally situated on the peduncle near the flower. It is, sometimes called also the floral leaf.
Research Bract