what is bracteate and ebracteate?

Bracts are small leaf-like structures present at the base of the flower stalk or pedi.

Flowers that have bracts at the base of pedicel (stalk of flower) are called bracteated flower.

For example- Tulip, Asparagus

Flowers that do not have bracts are called ebracteated flowers. For example- Mustard

Hope this answer helps,

All the best!