noun
definition
The outermost whorl of flower parts, comprising the sepals, which covers and protects the petals as they develop.
definition
Any of various cup-like structures.
Examples of calyx in a Sentence
In his arrangement the last subdivision disappears, and the Dicotyledons fall into two groups, a larger containing those in which both calyx and corolla are present in the flower, and a smaller, Monochlamydeae, representing the Apetalae and Diclines Irregulares of Jussieu.
The bracts on the flower-stalk are either small and scattered or large and leafy, and then placed near the flower, forming a sort of outer calyx or epicalyx.
Flower removed from 2, Calyx.
The calyx and corolla consist of five parts, the stamens are ten in two rows, while the pistil has only two parts developed.
There is thus traced a degradation, as it is called, from a flower with three stamens and three divisions of the calyx, to one with a single bract and a single stamen.
The limb of the calyx may appear as a rim, as in some Umbelliferae; or as pappus, in Compositae and Valeriana.
In Capparidaceae the calyx and petals occupy their usual position, but the axis is prolonged in the form of a gynophore, to which the stamens are united.
Whatever be its colour, the external envelope of the flower is considered as the calyx.
The venation is useful as pointing out the number of leaves which constitute a gamosepalous calyx.
In a polysepalous calyx the number of the parts is indicated by Greek numerals prefixed; thus, a calyx which has three sepals is trisepalous; one with five sepals is pentasepalous.
In a gamosepalous calyx the sepals are united in various ways, sometimes very slightly, and their number is marked by the divisions at the apex.
The cohesion is sometimes irregular, some parts uniting to a greater extent than others; thus a two-lipped or labiate calyx is formed.
The part formed by the union of the sepals is called the tube of the calyx; the portion where the sepals are free is the limb.
In Potentilla and allied genera an epicalyx is formed by the development of stipules from the sepals, which form an apparent outer calyx, the parts of which alternate with the true sepals.
In Valeriana the superior calyx is at first an obsolete rim, but as the fruit ripens it is shown to consist of hairs rolled inwards, which expand so as to waft the fruit.
Such a calyx is operculate or calyptrate.
The existence or non-existence of an articulation determines the deciduous or persistent nature of the calyx.
The receptacle bearing the calyx is sometimes united to the pistil, and enlarges so as to form a part of the fruit, as in the apple, pear, &c. In these fruits the withered calyx is seen at the apex.
In some cases, however, they are transformed into leaves, like the calyx, and occasionally leaf-buds are developed in their axil.
In such cases the tube varies in length, and the parts in their union follow the reverse order of what occurs in the calyx, where two sepals are united in the lower lip and three in the upper.
In the natural order Ranunculaceae, some genera, such as Ranunculus, globe-flower and paeony, have both calyx and corolla, while others, such as clematis, anemone and Caltha, have only a coloured calyx.
Sometimes they become adherent to the petals, or are epipetalous, and the insertion of both is looked upon as similar, so that they are still hypogynous, provided they are independent of the calyx and the pistil.
The calyx, petals and stamens spring from above the ovary (o) in which two chambers are shown each with a pendulous ovule; d, disc between the stamens and stigmas.
The stamens are diadelphous, nine of them being united by their filaments (f), while one of them (e) is free; st, stigma; c, calyx.
When the pistil consists centa; s,withered style and of several separate carpels, or is stigma; c, persistent calyx.
I, Vertical; 2, horizontal section; c, calyx; d, wall of ovary; o, ovules; p, placenta; s, stigma.
The ovary enlarges, and, with the seeds enclosed, constitutes the fruit, frequently incorporated with which are other parts of the flower, as receptacle, calyx, &c. In gymnosperms the pollen-tubes, having penetrated a certain distance down the tissue of the nucellus, are usually arrested in growth for a longer or shorter period, sometimes nearly a year.
Do not allow pots to dry out completely, this could weaken the stems and lead to split calyx.
The flower head becomes a prickly seed head, with each individual flower producing a stiff spiky calyx holding the seed.
The fruits are shiny black berries, surrounded by a persistent calyx, which looks like a star.
Falling pistils mark the end of the developmental cycle of the individual pistillate calyx.
Mechanical injury by hairy calyx can occur (Muenscher 1951 ).
Each individual flower produces its own seed, which is held tightly in the spiky calyx.
The tips of its delicate pink petals peered above the clasping green calyx.
Joker a deep red with a small calyx and Green Mist to name but two.
A flower containing a burst calyx must be disqualified.
The specimens should be collected when the capsules are just appearing above or in the colesule or calyx; if kept in a damp saucer they soon arrive at maturity, and can then be mounted in better condition, the fruit-stalks being too fragile to bear carriage in a botanical tin case without injury.
There are very few, if any, double varieties, but some varieties are curious and interesting from the duplication of the calyx or-corolla; these are popularly known as "hose-in-hose" Polyanthus.
Jenkinsi. R. calophyllum is practically the same thing, but a distinction is founded on the shorter calyx lobes and much smaller seed vessels.
The conformation of those flowers a consists essentially in the pres- ' 'A B ence of a six-parted perianth, the three outer segments of which correspond to a calyx, the three inner ones to a corolla.
In both cases the socalled fruit is composed of the receptacle or upper end of the flower-stalk (the so-called calyx tube) greatly dilated, and enclosing within its cellular flesh the five cartilaginous carpels which constitute the "core" and are really the true fruit.
The Davis calyx drill has also been employed for petroleum drilling.
The bit or cutter consists of a cylindrical The Calyx metallic shell, the lower end of which is made, by a Drill.
The calyx is a long tube, or a series of connected tubes, situated above the core barrel, to which it is equal in diameter.
Calyx surrounding nutlets.
Two of the petals placed under the hood of the calyx are supported on long stalks, and have a hollow spur at their apex, containing honey.
The bracts are usually scale-like, but sometimes foliaceous, as for instance in Calystegia, where they are large and envelop the calyx.
The parts of the flower are in fives in calyx, corolla and stamens, followed by two carpels which unite to form a superior ovary.
Each has a small calyx in the form of a shallow rim, sometimes five-lobed or toothed; five petals, which cohere by their tips and form a cap or hood, which is pushed off when the stamens are ripe; and five free stamens, placed opposite the petals and springing from a fleshy ring or disk surrounding the ovary; each bears a twocelled anther.
The divisions of the calyx extend only about one-third the length of the corolla, whereas in the other British species of Myosotis it is deeply cleft.