In texture it is still more delicate; its fronds are almost perfectly smooth, its outline is narrower, and its pinnae are but slightly lobed.
Then, too, the pinnae of the Cinnamon Fern bear tufts of rusty wool at the base beneath, the remnants of the woolly garments worn by the young fronds.
The lowest pinnae are set so high on the long slender stem as to give the fern the appearance of trying to keep dry, daintily holding its skirts out of the mud as it were.
III, a), and by the absence of the tuft of rusty wool at the base of the pinnae on the under side of the frond.
Clintonianum In every way larger than preceding species, fronds usually twice-pinnate, pinnae broadest at base, fruit-dots near the midvein.
In the Long Beech Fern the two lower pairs of pinnae differ little in length and breadth, while in the Broad Beech Fern the lowest pair are decidedly larger and broader than the next pair.
A frond is twice-pinnate when the pinnaeare cut into divisions which extend to their midveins (Fig.
Later in the season the curled pinnae of the Polypody seem to be making the best of cold weather.
The pinnaeare also divided, but less distinctly, into internodes of various lengths.
The pairs of cells on the pinnae are all secund, and in contact with each other at their bases, though widely divergent above.
The stems are from one to four inches long, the pinnae about 1/4 to 1/2 inch, alternate.
Stem and branches pinnate or bipinnate, thepinnae and pinnules alternate.
Colour bright brown; polypidom 2 to 3 inches high, consisting of straight pinnate fronds, pinnae or branches not opposite, nor regularly alternate, divaricate at rightangles.
Polypidom simply pinnate, about two inches high: longest pinnae about half an inch.
It approximates the two pinnae to one another by bringing them each into the position of adduction.
The pinnae are formed by the elongated autozooids, whose proximal portions are fused together to form a leaf-like expansion, from the upper edge of which the distal extremities of the zooids project.
The siphonozooids are very numerous and lie between the bases at the pinnae on the pararachides; they extend also on the prorachidial and metarachidial surfaces.
On either side of the rachis the pinnae are produced; these usually branch alternately from the central stalk.
The pinnae are arranged either in pairs or alternately on either side of the stalk.
Also the pinnae are not arranged so definitely in the form of three branches, as is to be observed in the case of the Oak Fern.
Between the lower pinnae the rachis is winged, but this feature disappears at the tip of the frond where the pinnae run together.
The frond is twice pinnate, and as a rule the pinnae are opposite; these are roughly egg-shaped in form.
The pinnae branch alternately from either side of the rachis, and these are usually very distinctly lobed.
The pinnae are arranged in alternation on either side of the rachis, and these are divided into pinnules with blunt points.
The edges of thepinnae are adorned with a number of sharp teeth, and this gives a singular spiny appearance to the whole plant.
As a rule, the pinnae are set in opposite pairs on either side of the rachis.
The frond of the Bristle Fern is divided three or four times, the first of the pinnae being placed alternately on either side of the rachis.
The margins of the pinnae are occasionally slightly toothed.
The pinnae are narrow and oblong, and at the tip the frond tends to become pinnatifid, whilst at the base the pinnae are little more than rounded lobes.
On either side of the rachis the pinnae are arranged in pairs, which are placed nearly but not quite opposite to one another.
The pinnae are arranged alternately on the rachis and these are not again divided, although they are very deeply cut.
The frond of the Hard Prickly Shield Fern is twice divided, and the pinnae are arranged alternately on either side of the rachis.
It has already been stated that thepinnae move independently of the main petiole.
The pinnae move forwards and at the same time sink downwards, whilst the main petiole rises considerably.
Later in the evening the fourpinnae approach each other, and the one which was observed moved inwards 59o between noon and 6.
The hinder pairs of pinnaelikewise sink downwards, but do not converge, that is, move towards the apex of the leaf.
The pinnae themselves move downwards, and at the same time backwards or towards the stem of the plant.
Although the pinnae of Acacia Farnesiana do not converge much, they sink downwards.
The conclusion that the pinnae of the parent-form of M.
The leaflets move towards the apex of the pinna and become imbricated, and the pinnae then look like bits of dangling string.
It consists of a long petiole bearing only two pinnae (here represented as rather more divergent than is usual), each with two pairs of leaflets.
The pinnae also approach each other closely, so that the four terminal leaflets come together.
With Schrankia, again, the pinnae are depressed at night.
In some species the petioles rise up greatly at night, and the pinnae close together.
Four larval Ixodid ticks, Dermacentor possibly variabilis, were removed from thepinnae of the ears of a live specimen of cansensis from 3 mi.
Two larval Ixodid ticks, Ixodes possibly cookei, were removed from the pinnae of the ears of a specimen of cansensis from the type locality, 4 mi.
The pinnae are sometimes nearly entire, and in other examples pinnately lobed.
The pinnae are sometimes very numerous; as many as forty on each side have been counted on very large fronds, but the number is more commonly less than twenty.
There are usually about eight or ten full-sized pinnae each side of the rachis, besides the gradually diminishingpinnae near the acute pinnatifid apex.
In a frond nine inches long there are about thirty primary pinnae on each side, and in one of the middle pinnae about ten oblong-ovate obtuse pinnately-incised pinnules on each side.
The terminal pinna of the frond and the terminal segments of the pinnae are considerably longer than the others.
In very dry seasons the pinnae are considerably deflexed.
The midrib of the pinnae is always more or less winged, so that the pinnae may be said to be pinnatifid, and the segments to be connected by a narrow wing.
The larger pinnae are from five to eight inches long, the middle ones an inch or an inch and a half wide, but the lowest ones two inches and a half broad.
The pinnules and the simple pinnae of the sterile fronds are commonly oval, and not more than half an inch long, but those of the fertile fronds are narrower and longer, sometimes nearly two inches long.
When the division is carried into the second degree, and the pinnae of a compound leaf are themselves pinnately compound, a bipinnate leaf is formed.
When a pinnate leaf ends in a pair of pinnae it is equally or abruptly pinnate (paripinnate); when there is a single terminal leaflet (fig.
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.
The tentacles lengthened and the pinnae reappeared, the larvae assuming their normal aspect.
During a period of enforced starvation, these pinnae were gradually absorbed, and the tentacles shortened, from tip to base.
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.
Finally, in the pinnae of the frond the centrifugal xylem may disappear, the protoxylem being now exarch in position and abutting on the phloem.
The vernation varies in different genera; in Cycas the rachis is straight and the pinnae circinately coiled (fig.
The first leaves borne on the seedling axis are often scale-like, and these are followed by two or more larger laminae, which foreshadow the pinnae of the adult frond.
The pinnae are traversed by several parallel veins.
In rare cases the pinnae of cycads are lobed or branched: in Dioon spinulosum (Central America) the margin of the segments bears numerous spinous processes; in some species of Encephalartos, e.
Color: Usually lighter; postauricular patches larger and darker; ears small with pinnae deeply pigmented as opposed to large and lightly pigmented.
A single frond is all that is yet developed, and this is as yet unexpanded, the pinnae being still folded on the midrib, like a fan.
Fronds minutely glandular and somewhat rigid, the lateral divisions ascending; lowest inferior pinnae of the lateral divisions smaller in proportion than in the last species, which it otherwise closely resembles.
Pinnae with 8--60 leaflets; branches armed with spiny rachises or rigid branchlets terminating in stout spines.
Pinnae with more than 1 pair of leaflets; valves of the legume not contorted after opening; funicle of the seed not enlarged and ariloid.
Pinnae with 1 pair of orbicular to broad-oblong leaflets.
Leaves petiolate, bipinnate, the pinnae few-foliolate, their rachis generally marked by numerous glands between the pinnae and between the leaflets.
The operator seats herself on the ground by a slab of wood, on which she lays a ring of coco-palm pinnae neatly bound together.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "pinnae" in a variety of sentences. We hope that you will now be able to make sentences using this word.
