from The Century Dictionary.
- noun In botany, same as
perianth, but also, specifically, the circle of leaves surrounding the antheridia of certain mosses. Also perigonium.
from the GNU version of the Collaborative International Dictionary of English.
- noun Any organ inclosing the essential organs of a flower; a perianth.
- noun In mosses, the involucral bracts of a male flower.
- noun (Zoöl.) A sac which surrounds the generative bodies in the gonophore of a hydroid.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany
- noun In
mosses, the involucral bractsof a male flower.
- noun zoology A
sacsurrounding the generativebodies in the gonophoreof a hydroid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils
Sorry, no etymologies found.
Differing from the true lilies in having the bases of the perigone leaves adherent to the surface of the ovary, so that the latter is apparently below the flower (inferior), and lacking the inner circle of stamens, is the iris family (_Iridaceæ_), represented by the wild blue-flag (_Iris versicolor_) (Fig. 84, _A_, _E_), as well as by numerous cultivated species.
The red specks on the base of the perigone leaves, as well as the red color of the back of the sepals, the stalk, and leaves are due to a purplish red cell sap filling the cells at these points.
The perigone has a twofold purpose, serving both to protect the sporophylls, and, at least in bright-colored flowers, to attract insects which, as we shall see, are important agents in transferring pollen from one flower to another.
The structure of the leaves of the perigone is much like that of the green leaves, but the tissues are somewhat reduced.
There are three circles of leaves forming the perigone, the two outer being more or less membranaceous, and only the three inner petal-like in texture.
These six leaves constitute the perigone of the flower; the three outer are called sepals, the inner ones petals.
In all of these, except _Trillium_, the perigone leaves are colored alike, and the leaves parallel-veined; but in the latter the sepals are green and the leaves broad and netted-veined.
There are two sets of perigone leaves, three in each, and these are usually much alike except the lower (through the twisting of the ovary) of the inner set.
The leaves of the perigone are numerous, and sometimes merge gradually into the stamens, as we find in the common white water-lily (_Castalia_).
The flowers are inconspicuous, borne usually in close spikes, and destitute of a perigone or having this reduced to small scales or hairs.