pulvinus

A petiole is nearly always present, often with a pulvinus at its base.

The lower pulvinus cells temporarily shrink due to water loss.

The petiole may be winged, and swollen into a pulvinus at the base.

A pulvinus is also sometimes called a geniculum.

The motion is performed by motor cells in a flexible segment just below the flower, called a pulvinus.

In this contracted position, the pulvinus no longer functions as a support and the petiole droops.

The action potential travels through the plant until it reaches a pulvinus at the base of the leaflet or petiole.

The Roman Ionic order there is no swelling pulvinus between the columns.

Towards the base the leaves narrow abruptly to a petiole set on a forward-angled, pulvinus.

This name arises from the appearance of a swollen region of a petiole called the pulvinus.

In Ionic architecture, an ornamental band which encircles the pulvinus, or bolster of the capital.

Often reduced to a pulvinus.

The pulvinus is a motor structure consisting of a rod of sclerenchyma surrounded by collenchyma.

Paraploactis pulvinus (Pillow velvetfish)

This is followed by an efflux of water, resulting in a sudden change of turgor pressure in the cells of the pulvinus.

Leaves green, sessile or shortly but distinctly petiolate, petiole with pulvinus, lower side, lower side of leaves mostly lanuginose.

The needles, or leaves, of spruce trees are attached singly to the branches in a spiral fashion, each needle on a small peg-like structure called a pulvinus.

A seat for these was called a pulvinar, from pulvinus ("cushion"), and many temples held these; at the banquets statues of the deity were placed on them.

In A. leiocalyx the small branches are smooth, sharply angular and usually red-brown, the pulvinus is short and red, and the calyx is hairless, or almost so.

On receiving the action potential signal, the cells in the lower half of the pulvinus respond by expelling potassium and chlorine ions and taking up of calcium ions.

The heliotropic motion of the bud is performed by the pulvinus, a flexible segment just below the bud, due to reversible changes in turgor pressure, which occurs without growth.

These figures were laid upon a couch (lectus), the left arm resting on a cushion (pulvinus, whence the couch itself was often called pulvinar) in the attitude of reclining.

The needles are shed when 4-10 years old, leaving the branches rough with the retained pulvinus (an easy means of distinguishing them from other similar genera, where the branches are fairly smooth).

He conducted extensive research on the mechanics of sap ascent, the construction of a leaf's pulvinus, the positioning of a plants' leaves, and the inner-workings between stomata and its guard cells.

A. concurrens, on the other hand, has stouter, angular branchlets which are scaly and usually not distinctly reddish, a long grey-green pulvinus, and calyces with a few stiff short hairs towards their base.