In areas with heavy ice scour, sessile benthic populations can be greatly reduced, although motile species may move into scoured areas during the ice-free period in summer.
The effects of ice scour on the shoreline and the nearshore bottom of the Chukchi and Beaufort seas is demonstrated by the absence of sessile benthic fauna and flora.
Some marine ducks are known to dive to considerable depths (reviewed by Kooyman 1974), but usually they occur in shallow waters where plants and sessile invertebrates are readily available.
The fruit, on the contrary, is so nearly sessile that it may be said to have little more than the indication of a peduncle (fig.
The planula occurs in the majority of sessile forms of Hydrozoa except the Tubularidae and Hydra.
The eyes are formed slightly later on each side of the head, and only coalesce at a subsequent period to form the peculiar median sessile eye of the adult.
When sessile they cause inconvenience only by their bulk; when pedunculated they may hang down into the pharynx and interfere with swallowing and breathing.
The sessile flowers have many petals and numerous stamens.
Defn: A genus of delicate branching hydroids having small sessile hydrothecæ along the sides of the branches.
Defn: Resting directly upon the main stem or branch, without a petiole or footstalk; as, a sessile leaf or blossom.
Defn: A kind of flower cluster in which sessile flowers are arranged on an unbranched elongated axis.
Defn: Any species of Sertularia, or of Sertularidæ, a family of hydroids having branched chitinous stems and simple sessile hydrothecæ.
We shall see that the earliest Echinoderms we know are cup-shaped structures on stalks, with a stiff, limy frame and (as in all sessile animals) a number of waving arms round the mouth.
Like all such sessile animals, it developed a wreath of arms round the open mouth.
Sessile cirripedes are found in every sea, from lat.
Sessile Cirripedes, partly from being attached to surfaces having very different characters, partly from undergoing a varying amount of disintegration, and partly from unknown innate causes, are extremely variable.
In nosessile cirripede are the orifices produced or tubular, as is the case with several genera amongst the Lepadidae.
It forms a dark green setting for the sessile flower, and is beautifully cut, like the Aconite.
The plants anchor out on tiny capes, or mid-stream islets, with the nearly sessile radicle leaves submerged.
The borders of the iris fields are pure gold, nearly sessile buttercups and a creeping-stemmed composite of a redder hue.
April or in May in cymes which are sessile or nearly so, flowers white, numerous, and generally about 0.
Tips of leaves of fruiting branches sharp-pointed, usually forming an acute angle; fruitsessile or nearly so.
March to the first of May, the staminate in small sessile clusters along the branchlets, the pistillate in short panicles; fruit a dark purple drupe, oblong, about 15 mm.
Recognizable by its peculiar pallid, sessile sporangia, as by the internal structure.
American specimens generally are sessile and for the most part closely crowded, almost heaped; but--Prof.
It is very well marked, though liable perhaps to be mistaken at first sight for sessile phases of P.
The sessile physarums of Fries were also before him, those especially, "floccis albis.
The order is distinguished by the sessile sporangia, with thick brown walls, and the very slender threads of the capillitium, with irregular and indefinite markings.
Sporangia obovoid to oblong, sessileand closely crowded on a well-developed common hypothallus.
Sporangium simple, subglobose and stipitate, the base commonly umbilicate, or sometimes sessile and plasmodiocarp; the wall a thin membrane with an outer layer of minute stellate crystals of lime.
Sporangia regular and stipitate or sessile and somewhat irregular; the wall, at maturity, irregularly ruptured.
Sporangium simple, subglobose and stipitate, the base commonly umbilicate, or sometimes sessile and plasmodiocarp.
A kind of flower cluster in which sessile flowers are arranged on an unbranched elongated axis.
A genus of delicate branching hydroids having small sessile hydrothecæ along the sides of the branches.
A leaf or scale will often be observed at the foot of a flower stalk or at the base of a sessile flower.
The hairs of the pappus are often sessile on the fruit, but sometimes mounted on the summit of a slender stalk, as in the Dandelion.
The leaves are elliptical, either sessile or shortly stalked, and have from five to nine ribs.
The flower-heads are of a bright blue colour, large and conspicuous, mostly in sessile clusters of two or three along the rigid, spreading branches, but a few are terminal.
Its leaves are oblong or very narrow, wavy, and sometimes toothed; the upper ones sessile and often clasping the stem; and the lower frequently shortly stalked.
The leaves are oblong or lanceolate, with crenate margins, rough and hairy, the lower ones stalked, but the upper sessile and clasping the stem.
Each spikelet is in the axil of a scaly or leafy outer bract, and consists of several scales or glumes, each with a single sessile flower in its axil.
The bark is smooth; the leaves abruptly pointed, soft, drooping, and downy beneath; and the beautiful white flowers are in almost sessile umbels.
The flowers are sessile in the axils of the upper leaves, and vary in colour from rose to white.
In general they are characterised by alternate, flat leaves; and small, green flowers in little sessile clusters, forming spikes in the axils of the upper leaves.
It consequently falls to the ground, and while the external mucus hardens, it clings to the former; such are the Sessile or fixed Polyps.
Such are the proper Cylindrical Snails, which are either sessileor fixed, or move themselves by fins and what have been called arms--Sessile and Natant Kracken.
Bosquet, sent me a drawing of a perfect specimen of an unmistakeable sessile cirripede, which he had himself extracted from the chalk of Belgium.
Sessile seed-vessel between the divisions of the leaves of the female plant.
Carapace, showing the large sessile eyes at the anterior angles.
From true fish upward parasitism andsessile life are practically impossible.
Sessile forms and mollusks, and, in a less degree, crabs and reptiles, worked for immediate return.
The barnacle is evidently a sessile crab or better crustacean.
The sessile animal, which lives mainly for digestion, does not attain as good digestive organs as his more active neighbor, who subordinates digestion to muscle.
But these parasitic and sessile forms had already been hopelessly distanced in the race for life.
Eucalyptus Globulus, the Australian gum tree, has opposite and broadly sessile leaves during the first years of its life.
In some species of clover the middle of the three is more or less stalked, as is ordinarily the case in pinnate leaves; in others it is as sessile as are its neighbors.
The leaves are broadly sessile and their bases are united so as to constitute a sort of cup.
In doing so we find that they are united at their base so as to constitute a sessile umbel.
An exostosis forms a rounded or mushroom-shaped tumour of limited size, which may be either sessile or pedunculated, and its surface is smooth or nodulated (Figs.
Many are sessileand others are distinctly pedunculated, but all are covered with skin.
In this rare type of loose body, the surface of the synovial membrane is studded with small sessile or pedunculated tumours composed of pure hyaline cartilage, or of bone, or of transition stages between cartilage and bone.
Among these the most remarkable aresessile forms which have received the names respectively of Cephalodiscus and Rhabdopleura.
Sterile segmentsessile above the middle of the plant, broadly triangular, thin, membranaceous, ternate.
The plants were very small, not averaging above two or three inches high, with the sterile blade sessile or slightly stalked.
Sporangia large, ovoid, sessilein a double row along the single vein of the narrow divisions of the fertile leaves, and provided with a complete apical ring.
Those low down on the stem have leaf stalks, but the upper ones are sessile on the stem.
They have no stalk of their own; they are sessile or seated on the stem.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sessile" in a variety of sentences. We hope that you will now be able to make sentences using this word.
