名詞 corolla:

1. (botany) the whorl of petals of a flower that collectively form an inner floral envelope or layer of the perianth

1. Having or characterizing a corolla with partially or wholly fused petals.
   分瓣的帶有部分或全部融合的花瓣的花冠的，或以此為特性的
2. A ray flower or the corolla of a ray flower.
   舌狀花舌狀花或這種花的花冠
3. The often differently colored center of the corolla of some flowers.
   花心一些花的通常顏色各異的花冠的中心

co.rol.la

n.Botany （名詞）【植物學(xué)】
The petals of a flower considered as a group or unit.
花冠：被認(rèn)為是一組或一個部分的花瓣

來源：
Latin [small garland] [diminutive of] corôna [garland] * see corona
拉丁語 [小花環(huán)] [] corôna的小后綴 [花環(huán)] *參見 corona

【引伸】
corol.late.