From the nodes spring whorls of similar but more slender branches.
2) the upper whorls are capitate, the lower filiform.
In this way are formed the familiar feathery colonies of Plumularia, in which the pinnules are all in one plane, while in the allied Antennularia the pinnules are arranged in whorls round the main biserial stem.
Club-shaped hydranths with numerous tentacles, generally scattered irregularly, sometimes with a spiral arrangement, or in whorls (" verticillate ").
Hydranth more shortened, daisy-like in form, with two whorls of tentacles, oral and aboral.
Trophosome, polyps with two whorls of tentacles, the lower filiform, the upper capitate; gonosome, free medusae, with tentacles solid and branched.
- Trophosome, polyps with two whorls of tentacles, both filiform.
Corymorphidae (including the medusa-family Hybocodonidae).--, Trophosome solitary polyps, with two whorls of tentacles; gonosome, free medusae or gonophores.
Under favourable conditions of growth it is a lofty tree, with a nearly straight, tapering trunk, throwing out in somewhat irregular whorls its widespreading branches, densely clothed with dark, clear green foliage.
Shell turriculated, with carinated br, Ctenidium (branchial whorls, the carinae tuberculated or plume).
Shell with numerous tuberculated whorls; aperture canaliculated anteriorly; short pallial siphon.
Animal fixed by the shell, the last whorls of which are not in contact with each other; foot small; two anterior pedal tentacles.
W, w, Whorls of the shell.
The upper whorls of the shell are seen to be divided into separate chambers by the formation of successively formed " septa."
Shell turriculated, with numerous whorls; aperture and operculum oval; eyes at summits of tentacles; siphon long.
Whorls, the last more or less detached.
Shell external, with elongated spire and numerous whorls, aperture generally narrow; male genital duct without multifid vesicles.
In Paludina the whorls of the spiral are very prominent; the genus is viviparous.
No spindle-whorls were found, but there were many varieties of cloth, platted and woven, bundles of yarn and balls of string.
The structure of the flower represents the simple type of monocotyledons, consisting of two whorls of petals, of three free parts each, six free stamens, and a consolidated pistil of three carpels, ripening into a three-valved capsule containing many winged seeds.
When young the tree is one of the most graceful of the conifers: the stem rises straight and tapering, with somewhat irregular whorls of drooping branches, the lower ones sweeping the ground - giving an elegant conical outline.
There is no satisfactory explanation of this break in the regular alternation of successive whorls; the outer whorl' of stamens arises in course of development before the inner, so that there is no question of subsequent displacement.
Sphenophyllum was a slender climbing plant with whorls of leaves, which was probably related both to the calamites and the lycopods.
In Cycas whorls of scales alternate with large pinnate leaves.
There are con siderable irregularities, how ever, in this respect, and the number of leaves in different whorls is not always uniform, as may be seen in Lysimachia
Thread-Work.Stone spindle whorls (103) are common in the prehistoric age; wooden ones were usual, of a cylindrical form (104) ~n the XIIth, and conical (105) in the XVIIIth Dynasty.
Apart from this, botanists are generally agreed that the concrescence of parts of the flower-whorls - in the gynaeceum as the seed-covering, and in the corolla as the seat of attraction, more than in the androecium and the calyx - is an indication of advance, as is also the concrescence that gives the condition of epigyny.
Another explanation is based on the late appearance of the petals in the floral development and their origin from the backs of the primordia of the stamens; it is then assumed that three alternating whorls only are present, namely, sepals, stamens bearing petal-like dorsal outgrowths, and carpels.
Besides the implements and weapons of iron there are fibulae and brooches of bronze, weaving combs and spindle-whorls, a bronze mirror and tweezers, wheel-made pottery as well as hand-made, ornamented with Late Celtic patterns, a bowl of thin bronze decorated with bosses, the nave of a wooden wheel with holes for twelve spokes, and a dug-out canoe.
The flower has in rare cases a perianth of six scale-like leaves arranged in two whorls, and thus conforming to the common monocotyledonous type of flower.
In a few cases two whorls of stamens are present, with three members in each, but generally only three are present; the pistil consists of three or two carpels, united to form an ovary bearing a corresponding number of styles and containing one ovule.
So also in Labiatae, such as dead-nettle (Lamium), the different whorls of inflorescence are developed centripetally, while the florets of the verticillaster are centrifugal.
The termination of the peduncle, or the part on which the whorls of the flower are arranged, is called the thalamus, torus or receptacle.
It is a small, submerged plant with long, slender branching stems bearing whorls of narrow toothed leaves; the flowers appear at the surface when mature.
The flowers spring from, or are enclosed in, a spathe, and are unisexual and regular, with generally a calyx and corolla, each of three members; the stamens are in whorls of three, the inner whorls are often barren; the two to fifteen carpels form an inferior ovary containing generally numerous ovules on often large, produced, parietal placentas.
Abnormal specimens of Equisetum in which the strobilus is interrupted by whorls of leaves are of interest for comparison with the fructification of Phyllotheca.
The leaves, which were of simple form (except in Archaeocalamites, where they forked), were inserted in whorls at the nodes; they were either free from one another or cohered by their bases into a sheath.
This similarity is closest in Archaeocalamites, an ancient type found in Upper Devonian rocks; in this the strobilus consists of peltate sporangiophores inserted in whorls on the axis.
In the other Calamarian strobili known the whorls of sporangiophores are separated by whorls of bracts.
In some the sporangiophores stood midway between the sterile whorls, while in others they approached the whorl above or below.
The long, sparingly branched stem bore at the somewhat swollen nodes whorls of six to eighteen wedge-shaped or linear leaves, which did not alternate in successive whorls.
The cone of Sphenophyllum consisted of an axis bearing at the nodes whorls of bracts, united below into a sheath.