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Flower bud  [ Botany ]

Dictionary of botanic terminology - index of names

  An unopened bloom surrounded by its immature perianth segments before it begins to enlarge.  

Pediocactus despainii
Flower buds on the plant apex stay dormant  all the winter

After a flower is apparent, but before it emerges, it is called a flower bud, typically it is a swollen protuberance or outgrowth usually in the axil of a leaf or at the tip of a stem or branch.

It is a rudimentary or undeveloped flower containing flower primordia (Meristematic tissue that gives rise to all the parts of the flower) and is generally enclosed in protective overlapping scales or bracts.
Once formed, it may remain for some time in a dormant condition, or it may open immediately giving rise to one or more flower.

Echinocereus chloranthus
Longitudinal section of a mature bud just before anthesis.

When a  bud contains simultaneously flower, leaf, and stem primordia; that will give rise to branch with leaves and flower(s) is called a Mixed bud.

In bud = having new buds that have not yet opened





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