Word Finder - genus

definition

A rank in the classification of organisms, below family and above species; a taxon at that rank.

example

All magnolias belong to the genus Magnolia.

definition

A group with common attributes.

definition

A natural number representing any of several related measures of the complexity of a given manifold or graph.

definition

Within a definition, a broader category of the defined concept.

They are the starfish proper, and have the typical genus Asterias.

The genus is associated with one long extinct in Europe.

By early writers the word was generally given as an equivalent of the Linnaean Loxia, but that genus has been found to include many forms not now placed in the same family.

The only species of this genus is about the size of a small rat, found in the interior of Australia.

The genus Pyrophorus contains about ninety species, and is entirely confined to America and the West Indies, ranging from the southern United States to Argentina and Chile.

No genus or species of palm, for example, is common to the Old and New Worlds.

The sub-order includes the family Hydridae, containing the common fresh-water polyps of the genus Hydra.

This genus comprises fresh-water polyps of simple structure.

Hence only the genus Hydra can be considered as truly representing the order Eleutheroblastea.

The phylogenetic position of this genus has been discussed above.

A type of the Rhizophysina is the genus Rhizophysa.

The typical genus is the well-known hydroid Podocoryne, budding the medusa known as Dysmorphosa; Thamnostylus, Cytaeis, &c., are other medusae with unknown hydroids.

Solmaris, Pegantha, Polyxenia, &c. To this family should be referred, probably, the genus Hydroctena, described by C. Dawydov [11a] and regarded by him as intermediate between Hydromedusae and Ctenophora.

Thus in connexion with the subject a genus of workers became possible who may be styled " ur-computers or circle-squarers " - a name which, if it connotes anything uncomplimentary, does so because of the almost entirely fruitless character of their labours.

Amphinema is a medusan genus of unknown hydroid.

The genus Myriothela is a solitary polyp with scattered capitate tentacles, producing sporosacs.

Another medusan genus is Proboscidactyla.

Goto, who considers the genus to be allied to Olindias.

Thus in Velella free medusae are produced, which have been described as an independent genus of medusae, Chrysomitra.

In the members of the typical genus Lemur, as well as in the allied Hapalemur and Lepidolemur, none of the toes or fingers are connected by webs, and all have the hind-limbs of moderate length, and the tail long.

The species of the genus Lemur are diurnal, and may be recognized by the length of the muzzle, and the large tufted ears.

P. canadensis, the "cotton-wood" of the western prairies, and its varieties are perhaps the most useful trees of the genus, often forming almost the only arborescent vegetation on the great American plains.

These hairs often occur in tufts, and are so colored and arranged that they were long taken for Fungi and placed in the genus Erineum.

In Monoblepliaris, one of the lower Fungi, in some Algae, in the Vascular Cryptograms, in Cycads (Zamia and Cycas), and in Ginkgo, an isolated genus of Gymnosperms, the male cell is a motile spermatozoid with two or more cilia.

The arctic flora contains no genus that is peculiar to it, and only some fifty species that are so.

Extensions of the flora occur southwards of the high mountains of tropical Africa; A denocaf pus, a characteristic Mediterranean genus, has been found on Kilimanjaro and 2000 m.

California and Arizona have each a soecies of Platanus, a dying-out genus.

Nor, with perhaps the interesting exception of Castanopsis chrysophylla, the solitary representative in the New World of an east Asiatic genus, which ranges from Oregon to California, has it any affinity with the Chino-Japanese sub-region.

Hemsley remarks that the northerr genus Erica, which covers thousands of square miles in Europe with very few species, is represented by hundreds of species in I comparatively small area in South Africa.

The Proteaceous genus, Faurea, occurs in Angola and Madagascar.

The characteristic genus Pelargonium has a few Mediterranean representatives, and one even occurs in Asia Minor.

The Proteaceous genus Helicia reaches as far north as China, but whether it is starting or returning must as inothercases be left an open question.

The Magnoliaceous genus Drimys, with a single species in the new world, follows the same track.

The humerus with its crests, ridges and processes, presents so many modifications characteristic of the various groups of birds, that its configuration alone is not only of considerable taxonomic value but that almost any genus, excepting, of course, those of Passeres, can be " spotted " by a close examination and comparison of this bone.

It is no exaggeration to say that the genus, often even the species, can be determined from almost any recent bone, but in the case of Miocene, and still more, of Eocene fossils, we have often to deal with strange families, which either represent an extinct side branch, or which connect several recent groups with each other.

Provisionally this genus has been grouped with the Ratitae, which at any rate are a heterogenous assembly.

There is an owl, type of the genus Sceloglaux.

Acrulocercus is a Meliphagine, and a peculiar genus.

C. autumnale and its numerous varieties as well as other species of the genus, are well known in cultivation, forming some of the most beautiful of autumn-flowering plants.

They are well known in cultivation, and owing to the wide distribution of the genus different methods are adopted with different species.

The land tortoises chiefly belong to the genus Cynyxis.

In this order is the genus Strophanthus,.

A genus much represented is Culcasia, and swampy localities are thickly set with the giant Cyrtosperma arum, with flower spathes that are blotched with deep purple.

Many trees offer magnificent displays of flowers at certain seasons of the year; perhaps the loveliest effect is derived from the bushes and trailing creepers of the Combretum genus, which, during the "winter" months from December to March, cover the scrub and the forest with mantles of rose colour.

Very beautiful also are the red velvet or white velvet sepals of the Mussaenda genus.

Bamboos of the genus Oxytenanthera are indigenous.

The Nitidulidae are a large family with 1600 species, among which members of the genus Meligethes are often found in numbers feeding on blossoms, while others live under the bark of trees and prey on the grubs of boring beetles.

All that do not happen to attach themselves to a bee of the genus Anthophora perish, but those that succeed in reaching the right host are carried to the nest, and as the bee lays an egg in the cell the triungulin slips off her body on to the egg, which floats on the surface of the honey.

Homogenesis means simply that such organism comes into existence directly from a parent organism of the same race, and hence of the same species, sub-species, genus and so forth.

The American hornbeam, blue or water beech, is Carpinus americana (also known as C. caroliniana); the common hophornbeam, a native of the south of Europe, is a member of a closely allied genus, Ostrya vulgaris, the allied American species, 0.