Legume oblong, compressed; rachis of the leaf not spinescent.
Rachis elongated; leaves green below, their segments divided at apex.
When viewed posteriorly, the cells are seen through the transparent rachis, and it might thus at first sight appear as if the rachis itself were cellular and not tubular, but such is not the case.
The rachis of the stem is divided into distinct internodes, from each of which are given off two pinnae, and upon which are also placed usually six cells, three on either side.
The ovicells arise from the back of the rachis towards the side.
Cells urceolate; deeply emarginate posteriorly, entire in front, ventricose below; a small pedunculate infundibuliform process attached in front to the projecting portion of the rachis on a level with upper border of the cell.
A grain of barley is shuttle-shaped; the end containing the germ which was originally attached to the rachis is known as the proximal end, whilst the opposite end of the corn is called the distal end.
In an ear of barley the primary axis or rachis is divided into internodes of which there may be any number up to forty.
The young leaves of Cycas consist of a straight rachis bearing numerous linear pinnae, traversed by a single midrib; the pinnae are circinately coiled like the leaf of a fern (fig.
Zamia therachis is bent or slightly coiled, bearing straight pinnae.
The vernation varies in different genera; in Cycas the rachis is straight and the pinnae circinately coiled (fig.
The distal ends of these girdles give off several branches, which traverse the petiole and rachis as numerous collateral bundles.
With mature plants, the flower-stems and the leaves of some few species, and the rachis of several ferns, as they emerge separately from the ground, are likewise arched.
Fern, as yet only slightly lobed and with a rachis only .
In the Crinoids they have the form of a hollow rachis completely surrounded by a blood-vessel.
Each egg-string is formed of a central rachis and of a peripheral layer of cells[22].
In the Crinoids the generative rachis consists of a tube, the epithelium of which is formed of the primary germinal cells.
Food-yolk appears to be formed in therachis even more energetically than in the protoplasm of the ova.
The inflorescence is of several slender spikes, usually drooping, 2 to 4 inches; the rachis is filiform and trigonous.
The inflorescence is a compound spike varying in length from 4 to 10 inches, erect; the main rachis is triquetrous, dorsally rounded, glabrous and very thinly scaberulous at the edges.
Spikelets are unilateral, sessile, crowded, biseriate on a slender rachis with four to six glumes and 1 to 3-flowered; the rachilla is produced and disarticulating above the empty glumes.
In some of these (Adiantum caudatum, Polystichum lepidocaulon) the rachis of the frond is lengthened out much like the string of the strawberry runner, and bears a plant at its apex.
In others (Polystichum angulare proliferum) the stipes below and the rachis amongst the pinnae develop buds, which are often numerous and crowded.
The spikelets are arranged in spike-like racemes, generally in pairs consisting of a sessile and stalked spikelet at each joint of the rachis (fig.
Spikelets falling singly from the unjointed rachis of the spike or the ultimate branches of the panicle.
Rachis generally jointed and breaking up when mature.
Spikelets one-flowered, rarely two-flowered as in Zea, falling from the pedicel entire or with certain joints of the rachis at maturity.
Amentum or catkin of Hazel (Corylus Avellana), consisting of an axis or rachis covered with bracts in the form of scales, each of which covers a male flower, the stamens of which are seen projecting beyond the scale.
They are attached to the rachis by a very short and slender stalk.
The rachis is not winged in its lower half, except in very small fronds, but above the middle it is narrowly winged, as are also its divisions.
The stalks are always more or less chaffy, the chaff mainly confined to the lowest portion in some plants, and in others following the stalk and the rachis to the apex of the frond.
The pinnules are from a line to two lines long, and are adnate to the secondary rachis by a more or less decurrent base.
The wing along the rachis formed by the basal segments of the pinnae seems to me more conspicuous in the latter than in the former.
But after a few years Rachis also was in conflict with the exarchate.
Thus had the Popes become the protectors of desolated Italy; therefore had the Kings Liutprand and Rachis offered their royal mantles at the shrine of St. Peter.
His gifts and his prayers so prevailed with King Rachis that he consented to raise the siege of the city and return in peace to Pavia.
The monk Rachis strove again for the sovereignty, which Desiderius, duke in Tuscany, contested.
Almost immediately thereupon a series of regulations showed that other political principles than those of Rachis had obtained the mastery.
On the resignation of Rachis the true Lombard spirit had raised his brother Aistulf to the throne.
Pinnules on the inferior side of the pinnæ often elongated, especially the lower pair, the pinnule nearest the rachis being usually the longest, at least in the lowest pinnæ.
Having the divisions of the frond extend halfway or more to the rachis or mid vein.
RUBÉLLUM has the sori distinct even when mature; its pinnules stand at a wide angle from the rachis of the pinna and are strongly toothed or pinnatifid with obtuse teeth.
Illustration] (2) Sporangia in oblong sori under a reflexed tooth of a pinnule; indusium broad; rachis dark and shining.
A frond is pinnátifid when its lobes extend halfway or more to the rachis or midvein as in the middle lobes of the pinnátifid spleenwort (Fig.
They have short stems with soft rachis and bards and long threadlike barbules, without hooklets.
Lolium has a conspicuously notched rachis and the spikelets arranged in the other plane.
A closer view shows that the leaflets of the Biltmore ash stand in a plane above the rachis higher than those of the white ash.
In leafy galleries beneath the eaves, Are singing!
It was opened in 1869, and greatly encouraged travel to the Pacific coast.
Three bridges cross the Missouri to Omaha, on the western shore, two for railways, one of them being the great steel bridge carrying over the Union Pacific, the pioneer railroad constructed to the Pacific Coast.
Sentineling its western side is the triple-peaked Sierra Blanca, the loftiest Colorado Mountain, rising almost fourteen thousand five hundred feet.
The head streams rise in Idaho, the Eda Hoe of the Nez Perces, meaning the "Light on the Mountains," and in Wyoming.
A monument is erected to John Brown's memory at Osawatomie.
They are at thy disposal,' the Prophet told him at last.
The pinnae are arranged alternately on the rachis and these are not again divided, although they are very deeply cut.
In each case, too, the pinnae arranged alternately on either side of the rachisare cut almost to the midrib.
Most distinctive of all, the Green Spleenwort has a bright green rachis to its fronds, although the stipes has a tendency to be purple in colour.
On either side of the rachis the pinnae are produced; these usually branch alternately from the central stalk.
On either side of the rachis the pinnae are arranged in pairs, which are placed nearly but not quite opposite to one another.
The fronds are triangular in outline, and it is seen that the pinnules nearest to the rachis are considerably larger than the upper ones.
The rachis of the Hartstongue Fern is a very prominent feature, and at the back of the leaf appears in the form of a ridge.
The stipes, which is usually about the same length as the leafy portion, is jet-black, and like the rachis and all its branchings, is of a very wiry nature.
As a rule the stipes is very much shorter than the leafy portion, and both it and the rachis are thickly covered with scales.
The upper portion of the frond is pinnatifid, and in many of the higher pinnae it is only the pinnules nearest to the rachisthat are distinct.
The outline of the leafy part is triangular in form, and on either side of the rachis are the tapering pinnae.
Between the lower pinnae the rachis is winged, but this feature disappears at the tip of the frond where the pinnae run together.
From the rachis arise veins which run out to the borders of the frond, and parallel to these are the linear sori.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "rachis" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: back; backbone; bone; spine
