Bract
/brækt/
Definition
Bract refers to a modified leaf associated with a flower, flower cluster, or cone. It is usually found just below the reproductive structure and differs from a true petal or sepal because it develops from leaf tissue rather than the flower itself. Bracts may be small and green or large and colorful, sometimes attracting pollinators, as in poinsettia, where the showy red parts are bracts, not petals.
Function in Plants
- Support for reproduction: A bract often sits close to a flower or flower cluster, where it can help protect developing buds and support the reproductive structure as it forms.
- Pollinator attraction: In some plants, a bract is large or brightly colored and draws attention more effectively than the small true flowers, as seen in poinsettia and dogwood.
- Identification value: The size, shape, color, and arrangement of a bract can help botanists and gardeners tell similar species apart, especially in grasses, sedges, and aroids.
- Specialized ecological roles: A bract may also help with dispersal or moisture control around flowers and seeds, depending on the species and how that structure has evolved.
Related Terms
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Flower
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Spathe
Spathe refers to a specialized bract, or modified leaf, that encloses or subtends a flower cluster. It is common in…
Calyx
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Sepal
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Floret
Floret refers to a small individual flower that is part of a larger flower cluster, especially in dense heads or…
Peduncle
Peduncle refers to the main stalk that supports a flower, a cluster of flowers, or a fruiting structure. It arises from…
Pedicel
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