PERIANTH

The term perianth has two similar but separate meanings in botany:In flowering plants, the perianth is the outer, sterile whorls of a flower (see sepal, petal, and tepal).In a liverwort, perianth is the sterile tubelike tissue that surrounds the female reproductive structure (or developing sporophyte).
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Noun
1. collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils
(synonym) chlamys, floral envelope, perigone, perigonium
(hypernym) plant organ
(part-holonym) flower, bloom, blossom
(part-meronym) corolla

(n.)
The leaves of a flower generally, especially when the calyx and corolla are not readily distinguished.
  

(n.)
A saclike involucre which incloses the young fruit in most hepatic mosses. See Illust. of Hepatica.
  

perianth /'periænθ/
danh từ (thực vật học) bao hoa
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PERIANZIO