A secondary involucre, as at the base of an umbel within a compound umbel.
次总苞，小总苞次级花被，如处于复合。
2
The fluctuations of protein and amino acide contents in the development process of involucre ovary and cotyledon were studied between empty shell's chestnut and normal chestnut.
本文研究了空篷栗、正常栗的总苞和子房、子叶发育过程中蛋白质和氨基酸含量的变化。
3
The fluctuations of protein and amino acide contents in the development process of involucre, ovary and cotyledon were studied between empty shell's chestnut and normal chestnut.