involucre

• 名词，指位于花序基部的一层或一圈显著苞片，即总苞。植物学中特指包围花序或花簇的苞片结构。

A noun referring to a highly conspicuous bract, bract pair, or ring of bracts located at the base of an inflorescence.

1. Botanical bract structureC2formalscientific

   A structure at the base of an inflorescence consisting of one or more bracts, often conspicuous and protective.

   总苞

   • The involucre of a daisy is composed of multiple small green bracts.
   • In many plants, the involucre helps protect the developing flower buds.
   • Botanists use the shape of the involucre for identifying plant species.
   • The showy involucre of the poinsettia is often mistaken for petals.