(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.
Example Sentences:
(1) In contrast, mutations in another floral homeotic gene, APETALA2 (AP2), result in the replacement of the perianth organs by the reproductive organs.
(2) In ag mutants, the loss of AG function leads to the conversion of these organs to the perianth organs (petals and sepals).
(3) The proper time to pick the flower buds comes when they are fully developed before the perianth appears.
Perigone
Definition:
(n.) Any organ inclosing the essential organs of a flower; a perianth.
(n.) In mosses, the involucral bracts of a male flower.
(n.) A sac which surrounds the generative bodies in the gonophore of a hydroid.