Stipules Sentence Examples

At their base they are provided with stipules, which are also modified to form the scales investing the winter buds.

The leaves are opposite, simple as in honeysuckle, or compound as in elder; they have usually no stipules.

Scale-mosses are mounted in the same way, or may be floated out in water like sea-weeds, and dried in white blotting paper under strong pressure before gumming on paper, but are best mounted as microscopic slides, care being taken to show the stipules.

The leaves when borne on an elongated stem are arranged alternately and have no stipules.

Vines have woody climbing stems, with alternate, entire or palmately lobed leaves, provided at the base with small stipules.

The plant is an annual herb with flexuose branches, and alternately arranged pinnately compound leaves, with small, oval, serrated leaflets and small eared stipules.

The opposite or alternate leaves have a pair of small stipules at the base of the stalk and a palminerved blade.

At the base of the leaf the spiny stipules are seen.

The stipules are generally two in number, and they are important as supplying characters in certain natural orders.

Stipules may be large or small, entire or divided, deciduous or persistent.

In Lathyrus Aphaca and some other plants the true pinnate leaves are abortive, the petiole forms a tendril, and the stipules alone are developed, perform ing the office of leaves.

In the case of alternate leaves, the stipules at the base of each leaf are sometimes united to the petiole and to each other, so as to form an adnate, adherent or petiolary stipule, as in the rose, or an axillary stipule, as in Houttuynia cordata.

In the development of the leaf the stipules frequently play a most important part.

The stipules are sometimes so minute as to be scarcely distinguishable without the aid of a lens, and so fugacious as to be visible only in the very young state of the leaf.

At the base of the leaflets of a compound leaf, small stipules (stipels) are occasionally produced.

The leaves of barberry and of some species of Astragalus, and the stipules of the false acacia (Robinia) are spiny.

In Leguminous plants (the pea tribe) the pinnae are frequently modified to form tendrils, as in Lathyrus Aphaca, in which the stipules perform the function of true leaves.

In many plants, as already noticed, phyllodia or stipules perform the function of leaves.

The divergence is expressed left to right, the other is right to left, in the altered laminae or of the enlarged petiolary sheath, or of stipules, as in the fig and magnolia, or of one or two of these parts combined.

The leaf is usually provided at the base of the leaf-stalk with stipules, which are inconspicuous, or large and leafy; and the stalk is also furnished with one or more glandular excrescences, as in some cases are the leaf itself and the bracts.

In Ceratozamia the broad petiole-base is characterized by the presence of two lateral spinous processes, suggesting stipular appendages, comparable, on a reduced scale, with the large stipules of the Marattiaceae among Ferns.

Many case's of what was considered chorisis are in reality due to the development of stipules from the staminal leaf.

Thus in Dicentra and Corydalis there are six stamens in two bundles; the central one of each bundle alone is perfect, the lateral ones have each only half an anther, and are really stipules formed from the staminal leaf.

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 Lauraceae there are perfect stamens, each having at the base of the filament two abortive stamens or staminodes, which may be analogous to stipules.

The magnificent Devonian Fern Archaeopteris hibernica, with a somewhat Adiantiform habit, bore special fertile pinnae; the fructification is still imperfectly understood, but the presence of stipules, observed by Kidston, has been adduced in support of Marattiaceous affinities.

Seen under the microscope these stipules have small droplet of what I assume to be sugary sap in the hollow underneath.

Robur, but in old age the boughs generally curve downwards, and the tree acquires a wide spreading head; the bark is dark brown, becoming grey and furrowed in large trees; the foliage varies much, but in the prevailing kinds the leaves are very deeply sinuated, with pointed, often irregular lobes, the footstalks short, and furnished at the base with long linear stipules that do not fall with the leaf, but remain attached to the bud till the following spring, giving a marked feature to the young shoots.

Plants having stipules are called stipulate; those having none are exstipulate.

The stipules of the leaves act as protecting scale-leaves in the winter-bud and fall when the bud opens in spring.