involucre
/ˈɪnvəljuːkə(r)/noun
1
- Anatomy a membranous envelope【剖】外皮, 包膜。
2
- Botany a whorl or rosette of bracts surrounding an inflorescence (especially a capitulum) or at the base of an umbel【植】总苞; 蒴包。
词源
late 16th cent.: from French， or from Latin involucrum, from involvere 'roll in， envelop' （see INVOLVE）.