genus

listen to the pronunciation of genus
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A number measuring some aspect of the complexity of any of various manifolds or graphs
Within a definition, a broader category of the defined concept
A group with common attributes
a rank in the classification of organisms, below family and above species; a taxon at that rank

Müller criticized the division of the Jubuleae into two families and he cited Jubula as an annectant genus.

{n} iin science, a class of beings, kind, mode
The term for a group of closely related species (pl genera)
A numerical integer invariant of an algebraic curve As applied to a topological object such as 2-dimensional manifold, it can be interpreted as the number of "handles" the object has E g a sphere has genus 0, while a torus (donut shape) has genus 1 There are various other definitions, such as the dimension of the space of differential (1-)forms
A group in the taxonomic classification of organisms, comprising one or more species believed to have descended from a common ancestor
A genus is not necessarily the lowest definable group of species, for it may often be divided into several subgenera
An inclusive, taxonomic category whose species have more characteristics in common with each other than with species of other genera within the same family
kind, sort, or classification, as in: The dog, the wolf, and the coyote belong to the same genus
a general kind of something; "ignore the genus communism"
A group of related species demonstrating common characteristics
The unit of classification for a group of closely related plants In a plants botanical name, the genisus is identified by the first word in the full name; e g : Acer
An assemblage of species, having so many fundamental points of structure in common, that in the judgment of competent scientists, they may receive a common substantive name
A group of closely related species, such as the genus rosaceae, encompassing the roses
A group of organisms (species) with common characteristics and an implied common ancestry Expressed in Latin, with the occasional Greek roots, as the first term of the binomial nomenclature of Genus species
a general kind of something; "ignore the genus communism" (biology) taxonomic group containing one or more species
1 In geometric topology, the number of holes of a surface Usually this means the maximum number of disjoint circles that can be drawn on the surface such that the complement is connected If there are no such circles, the surface is planar, and the genus then sometimes means the maximum number of disjoint arcs with the same property 2 A measure of the twistedness of a fiber bundle Technically, if X is a topological space with a fiber bundle F, it is the minimum number of open sets that cover X such that F is trivial over each open set 3 Some other number which generalizes or is analogous to the topological genus, such as the arithmetic genus of an algebraic curve
a grouping of similar species according to taxonomic criteria, for example, humans (Homo sapiens) belong to the genus 'Homo' and the species 'sapiens'
In proportion as its definition is exact, it is natural genus; if its definition can not be made clear, it is more or less an artificial genus
A taxonomic group comprising one or more species that are of common origin and are different from other taxonomic groups Similar genera are grouped in a family, which is the next level above the species
taxonomic division of related species below family
in biology, a category that's part of the scientific system for grouping together related plants, animals and other organisms (kingdom, phylum, class, order, family, genus, species) Genus is the category that ranks below a family and above a species
A group of related species The genus name is the first word in the scientific name of a species For example, the monarch's scientific name is Danaus plexippus Danaus is the name of the genus the monarch belongs to
an associated group of species
A group in the classification of organisms Classification level above the species group It consists of similar species Similar genera (plural form of genus) are grouped into a family
The genus is the most closely related wider classification of a concept Animal is the genus of Man All men are animals but not all animals are men Genera is the plural form of Genus
A unit used in the classification of plants and animals It consists of a grouping of closely related SPECIES When the SCIENTIFIC NAME for a particular species is given the name of the genus (the 'generic name') is given first e g the lady's slipper orchid - Cypripedium calceolus - belongs to the genus called 'CYPRIPEDIUM'
(j' ns) In the scientific system of classification (taxonomy), genus is the division between family and species
An important rank in the taxonomic hierarchy which is subordinate to family but above the rank of species It is a group of obviously homogeneous species Collections of genera (plural) are grouped into families Large genera may be further subdivided into sections and series and even subgenera
A taxonomic category that designates a closely related and definable group of plants, including one or more species The name of the genus becomes the first word of the binomial employed in literature
{i} category in which living organisms with common characteristics are classified (Biology); category, class, kind
"Genus" is the next to the lowest level of plant classification The lowest level is "species" All known living organisms are organized into a classification system This is part of the science called "taxonomy" Scientists refer to living things by a combined "genus" and "species" name, using Latin terms For example, people are called "Homo sapiens" A white pine would be called "Pinus strobus" A scientist anywhere in the world can look up information about any living organism by knowing the Latin or scientific name The genus name is always capitalized The species name is usually not capitalized The plural form of "genus" is "genera" [To return to previous page, click your browser's BACK button then scroll through the page to your last location]
A group of closely related species Ranks next above the species and next below the family The genus name is capitalized and immediately precedes the species name in a scientific description of an organism
Roughly speaking, this is the number of holes through a polyhedron (or other 3D object) A cube has genus 0, a doughnut has genus 1, and so on With many self-intersecting polyhedra, including many uniform polyhedra, it can be hard to say what the genus is just by looking at them, since the "holes" may not be apparent due to intersecting faces getting in the way
(biology) taxonomic group containing one or more species
A genus is a class of similar things, especially a group of animals or plants that includes several closely related species. genera one of the groups into which scientists divide animals or plants, in which the animals or plants are closely related but cannot produce babies together. A genus includes fewer members than a family and more members than a species. Biological classification. It ranks below family and above species, consisting of structurally or phylogenetically (see phylogenetic tree) related species or a single species exhibiting unusual differences. For example, the species of roses collectively form the genus Rosa and those of horses, donkeys, and zebras form the genus Equus. The genus name, capitalized and usually italicized, is the first word of a scientific name in the system of binomial nomenclature
A class of objects divided into several subordinate species; a class more extensive than a species; a precisely defined and exactly divided class; one of the five predicable conceptions, or sorts of terms
genus Panthera
{i} family of big cats (that inclues the leopards, snow leopards, lions, jaguars, tigers, saber-toothed tigers, cheetahs)
genus abelia
chiefly east Asian shrubs
genus acacia
large genus of shrubs and trees and some woody vines of Central and South America, Africa, Australia and Polynesia: wattle; mimosa
genus acanthus
bear's breeches
genus achillea
perennial often aromatic and sometimes mat-forming herbs of north temperate regions: yarrow; milfoil
genus achimenes
genus of tropical perennial American herbs
genus actinomyces
type genus of the family Actinomycetaceae
genus addax
genus of antelopes of northern African deserts
genus aegyptopithecus
a genus of Hominoidea
genus aepyornis
type genus of the Aepyornidae: elephant birds
genus aerides
epiphytic orchids of tropical Asia having stiff 2-ranked leaves and fragrant white flowers in arching racemes
genus aeschynanthus
large genus of East Indian ornamental woody epiphytic plants
genus afropavo
Congo peafowl
genus agama
type genus of the Agamidae
genus agapanthus
small genus of South African evergreen or deciduous plants; sometimes placed in the family or subfamily Alliaceae
genus agave
type genus of the Agavaceae; in some classifications considered a genus of Amaryllidaceae
genus ageratum
genus of tropical American herbs grown for their flowers
genus agrimonia
genus of herbs found chiefly in north temperate regions having pinnate leaves and yellow flowers followed by bristly fruit
genus ailanthus
small genus of east Asian and Chinese trees with odd-pinnate leaves and long twisted samaras
genus albizia
large genus of unarmed trees and shrubs of Old World tropics
genus albuca
genus of bulbous plants of South Africa; sometimes placed in subfamily Hyacinthaceae
genus allamanda
genus of tropical American woody vines
genus alligator
type genus of the Alligatoridae
genus allosaurus
carnivorous dinosaur of North America; late Jurassic
genus alocasia
tropical Asiatic herbs similar to Colocasia but distinguished by a large sterile spadix
genus aloe
large genus of chiefly African liliaceous plants; in some systems placed in family Aloeaceae
genus alstroemeria
genus of showy South American herbs with leafy stems; sometimes placed in family Alstroemeriaceae or in family Amaryllidaceae
genus althaea
hollyhocks; in some classification systems synonymous with Alcea
genus amaryllis
type genus of the Amaryllidaceae; bulbous flowering plants of southern Africa
genus ambrosia
comprising the ragweeds; in some classification considered the type genus of a separate family Ambrosiaceae
genus ammobium
small genus of Australian herbs grown for their flowers
genus amoeba
protozoan inhabiting moist soils or bottom vegetation in fresh or salt water
genus amorpha
American herbs or shrubs usually growing in dry sunny habitats on prairies and hillsides
genus amorphophallus
genus of large tropical east Asian cormous aroids: devil's tongue; snake palm
genus amphioxus
type genus of the Amphioxidae
genus amphiuma
congo snakes
genus anatotitan
genus of large duck-billed dinosaurs; late Cretaceous
genus anchusa
rough-hairy Old World herbs
genus andrena
a solitary burrowing short-tongued bee
genus andromeda
low-growing shrubs of northern regions of northern hemisphere
genus andryala
genus of hardy hairy latex-producing perennials of Mediterranean area
genus anemone
perennial herbs with tuberous roots and beautiful flowers; of north and south temperate regions
genus angelica
biennial or perennial herbs of the northern hemisphere; have a taproot
genus angiopteris
1 species: tree fern
genus angrecum
genus of tropical Old World epiphytic orchids with showy flowers sometimes grotesque
genus anhinga
type genus of the Anhingidae
genus ankylosaurus
armored herbivorous dinosaurs of the Cretaceous
genus anoa
a genus of mammals of the family Bovidae
genus anomalops
type genus of the family Anomalopidae
genus anomalopteryx
small moas
genus anthurium
large genus of often epiphytic evergreen tropical American plants often cultivated as houseplants
genus apatosaurus
large quadrupedal herbivorous dinosaurs with very long neck and tail; late Jurassic
genus appendicularia
a genus of chordates in the class Larvacea
genus apteryx
type genus of the Apterygidae: kiwis
genus aquilegia
columbine
genus aralia
type genus of Araliaceae; large widely distributed genus of shrubs and trees and vines: spikenard; Hercules'-club
genus araucaria
a genus of Araucaria
genus arbutus
large evergreen shrubs and trees of southern Europe and western North America: strawberry tree; madrona
genus arcella
type genus of the Arcellidae
genus archaeopteryx
a genus of fossil birds
genus archaeornis
a genus of fossil bird
genus architeuthis
giant squid
genus areca
a monocotyledonous genus of palm trees
genus arethusa
genus of bog orchids of North America and Japan
genus argemone
prickly poppies
genus argentinosaurus
enormous dinosaur of the middle Cretaceous found in Argentina
genus arnica
large genus of herbs of north temperate and arctic regions
genus artemisia
usually aromatic shrubs or herbs of north temperate regions and South Africa and western South America: wormwood; sagebrush; mugwort; tarragon
genus arum
type genus of the Araceae: tuberous perennial herbs of Europe and Asia with usually heart-shaped leaves
genus asparagus
large genus of Old World perennial herbs with erect or spreading or climbing stems and small scalelike leaves and inconspicuous flowers; sometimes placed in family Asparagaceae
genus aspidistra
genus of eastern Asiatic herbs; sometimes placed in the family Convallariaceae
genus aster
large genus of herbs widely cultivated for their daisylike flowers
genus astilbe
chiefly Asiatic perennials: spirea
genus astrantia
a genus of Eurasian herbs of the family Umbelliferae with aromatic roots and palmate leaves and showy flowers
genus australopithecus
extinct genus of African hominid
genus ayapana
genus of tropical American herbs sometimes included in genus Eupatorium
genus babesia
type genus of the family Babesiidae
genus bacillus
type genus of the Bacillaceae; includes many saprophytes important in decay of organic matter and a number of parasites
genus banksia
important genus of Australian evergreen shrubs or trees with alternate leathery leaves and yellowish flowers
genus barosaurus
huge quadrupedal herbivorous dinosaur; late Jurassic
genus begonia
large genus of tropical succulent plants widely cultivated
genus bergenia
genus of perennial spring-blooming rhizomatous herbs with thick evergreen leaves; eastern Asia
genus beroe
coextensive with the class Nuda
genus bison
sometimes considered a subgenus of genus Bos: American buffalo
genus bletia
genus of tropical American terrestrial orchids with large purple or pink flowers
genus bocconia
tropical American trees or shrubs closely related to genus Macleaya
genus borrelia
small flexible parasitic spirochetes having three to five wavy spirals
genus bougainvillea
ornamental tropical woody vines
genus brassavola
genus of tropical American epiphytic or lithophytic rhizomatous orchids
genus brodiaea
genus of western United States bulbous plants with basal leaves and variously colored flowers; sometimes placed in family Alliaceae
genus browallia
small genus of tropical South American annuals
genus bryanthus
1 genus; allied to and once included in genus Phyllodoce
genus bryonia
climbing perennial herbs: bryony
genus buckleya
small genus of Asiatic and American parasitic shrubs
genus buddleia
shrubs or trees of warm regions
genus bufo
type genus of the Bufonidae; common toads of New and Old Worlds
genus cabassous
solely the tatouay
genus caiman
caimans
genus caladenia
terrestrial orchids of Australia to New Caledonia
genus caladium
small genus of tropical South American tuberous perennials with large variously colored leaves
genus calamus
distinctive often spiny-stemmed palms found as climbers in tropical and subtropical forest
genus calanthe
large and widely distributed genus of terrestrial orchids
genus calceolaria
large genus of tropical American herbs and shrubs with showy cymose flowers
genus calendula
marigold
genus calliandra
genus of pinnate-leaved shrubs and small trees of tropical and subtropical North and South America and India and West Africa
genus calosoma
genus of large predaceous ground beetles that feed on injurious caterpillars
genus calypso
1 species found throughout much of northern North America and Eurasia
genus camellia
tropical Asiatic evergreen shrubs or small trees
genus campanula
large genus of herbs grown for their blossoms: bellflowers
genus candida
a genus of yeastlike imperfect fungi; sometimes included in genus Monilia of the family Moniliaceae
genus canella
1 species
genus canna
type and sole genus of the Cannaceae: perennial lilylike herbs of New World tropics
genus cannabis
hemp: genus of coarse annuals native to central Asia and widely naturalized in north temperate regions; in some classifications included in the family Moraceae
genus capsicum
chiefly tropical perennial shrubby plants having many-seeded fruits: sweet and hot peppers
genus caragana
large genus of Asiatic deciduous shrubs or small trees
genus carissa
Old World genus of tropical evergreen usually spiny shrubs
genus carpenteria
1 species; sometimes placed in family Saxifragaceae
genus cassia
some Cassia species often classified as members of the genus Senna or genus Chamaecrista
genus casuarina
genus of trees and shrubs widely naturalized in southern United States and West Indies; coextensive with the family Casuarinaceae and order Casuarinales
genus catalpa
a dicotyledonous genus of plants belonging to the family Bignoniaceae; has large flowers (white or mottled) and long terete pods
genus catananche
genus of Mediterranean herbs: cupid's dart
genus cathaya
one species; related to Pseudotsuga and Larix
genus cattleya
large and highly valued genus of beautiful tropical American epiphytic or lithophytic orchids; the typical orchids; known in many varieties
genus cerastes
horned vipers
genus ceratodus
type genus of the Ceratodontidae: extinct genus of lungfishes
genus ceratosaurus
primitive saurischian carnivorous dinosaurs
genus ceratozamia
small genus of Mexican cycads; sometimes classified in family Cycadaceae
genus chaenactis
genus of flowering herbs of western United States
genus chaetodon
type genus of the Chaetodontidae
genus chimaera
type genus of the Chimaeridae
genus chinchilla
type genus of the Chinchillidae
genus chiton
a genus of Polyplacophora
genus chlamydia
type genus of the family Chlamydiaceae: disease-causing parasites
genus chlorella
nonmotile unicellular green algae potentially important as source of high-grade protein and B-complex vitamins
genus chlorophyllum
a genus of fungus belonging to the family Lepiotaceae
genus christella
medium to large terrestrial ferns of tropical forests of Old World to Americas
genus chrysanthemum
Argyranthemum; Dendranthema; Leucanthemum; Tanacetum
genus chrysanthemum
in some classifications many plants usually assigned to the genus Chrysanthemum have been divided among other genera: e
genus chunga
a genus of Cariamidae
genus cicada
type genus of the Cicadidae: cicadas
genus cinchona
large genus of trees of Andean region of South America having medicinal bark
genus citrus
orange; lemon; lime; etc
genus clematis
large genus of deciduous or evergreen woody vines or erect herbs
genus cleome
tropical and subtropical annual or perennial herbs or low shrubs
genus clianthus
genus of semi-prostrate Australasian shrubs or vines
genus clintonia
sometimes placed in family Convallariaceae
genus clostridium
anaerobic or micro-aerophilic rod-shaped or spindle-shaped saprophytes; nearly cosmopolitan in soil, animal intestines, and dung
genus clusia
tropical American aromatic trees or shrubs; often epiphytic; some stranglers
genus coccus
type genus of the Coccidae
genus coelogyne
large diverse genus of tropical Asiatic epiphytic orchids
genus coelophysis
late Triassic carnivorous saurischian dinosaurs
genus coleus
genus of Old World tropical plants cultivated for their variegated leaves; various plants sometimes placed in genera Plectranthus or Solenostemon
genus colobus
a genus of Cercopithecidae
genus columnea
genus of tropical American subshrubs and lianas
genus combretum
type genus of the Combretaceae: tropical and subtropical small shrubs and trees
genus commelina
type genus of the Commelinaceae; large genus of herbs of branching or creeping habit: day flower; widow's tears
genus compsognathus
a reptile genus of Theropoda
genus convolvulus
genus of mostly climbing or scrambling herbs and shrubs: bindweed
genus coreopsis
genus of American plants widely cultivated for their flowers
genus coronilla
genus of Old World shrubs and herbs
genus corozo
a monocotyledonous genus of tropical American palm trees
genus corynebacterium
the type genus of the family Corynebacteriaceae which is widely distributed in nature; the best known are parasites and pathogens of humans and domestic animals
genus coryphantha
mainly globose cacti of southwestern United States and Mexico covered with many nodules; superficially resembling and formerly included in genus Mammillaria
genus corythosaurus
genus of duck-billed dinosaurs of late Cretaceous
genus coscoroba
a genus of Anatidae
genus cosmos
genus of tropical American plants cultivated for their colorful flowers
genus costia
a genus of flagellate protoctista
genus cotinga
type genus of the Cotingidae: cotingas
genus cotoneaster
genus of deciduous or evergreen Old World shrubs widely cultivated
genus crocus
a monocotyledonous genus of the family Iridaceae
genus crotalaria
large genus of herbs with simple leaves and racemes of yellow flowers; mainly of tropical Africa
genus croton
tropical shrubs and herbs; source of croton oil
genus cryptocoryne
water trumpet; aquatic herbs having broad leaves and long slender spathes; often used as aquarium plants
genus cyclamen
genus of widely cultivated flowering Eurasian herbs with centrally depressed rounded tubers and rounded heart-shaped leaves
genus cyclops
copepod water fleas
genus cymbidium
genus of tropical epiphytic or terrestrial Old World orchids; one of the most popular orchid genera
genus cynancum
genus of perennial tropical African lianas
genus cyrilla
1 species: trees and shrubs having flowers with acute or twisted petals and wingless fruit
genus dahlia
genus of perennial tuberous-rooted plants of Mexico and Central America
genus daphne
usually evergreen Eurasian shrubs
genus daphnia
water fleas
genus
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