Tussock grasses or bunch grasses are a group of grass species in the family

Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns an ...

. They usually grow as singular plants in clumps, tufts, hummocks, or bunches, rather than forming a sod or

lawn A lawn is an area of soil-covered land planted with grasses and other durable plants such as clover which are maintained at a short height with a lawnmower (or sometimes grazing animals) and used for aesthetic and recreational purposes. ...

, in

meadow A meadow ( ) is an open habitat, or field, vegetated by grasses, herbs, and other non- woody plants. Trees or shrubs may sparsely populate meadows, as long as these areas maintain an open character. Meadows may be naturally occurring or arti ...

grassland A grassland is an area where the vegetation is dominated by grasses ( Poaceae). However, sedge ( Cyperaceae) and rush ( Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur na ...

s, and prairies. As

perennial plant A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...

s, most species live more than one season. Tussock grasses are often found as

forage Forage is a plant material (mainly plant leaves and stems) eaten by grazing livestock. Historically, the term ''forage'' has meant only plants eaten by the animals directly as pasture, crop residue, or immature cereal crops, but it is also use ...

pasture Pasture (from the Latin ''pastus'', past participle of ''pascere'', "to feed") is land used for grazing. Pasture lands in the narrow sense are enclosed tracts of farmland, grazed by domesticated livestock, such as horses, cattle, sheep, or sw ...

s and

ornamental grass Ornamental grasses are grasses grown as ornamental plants. Ornamental grasses are popular in many colder hardiness zones for their resilience to cold temperatures and aesthetic value throughout fall and winter seasons. Classifications Along ...

es in gardens. Many species have long roots that may reach or more into the soil, which can aid slope stabilization,

erosion control Erosion control is the practice of preventing or controlling wind or water erosion in agriculture, land development, coastal areas, river banks and construction. Effective erosion controls handle surface runoff and are important techniques i ...

, and

soil porosity The pore space of soil contains the liquid and gas phases of soil, i.e., everything but the solid phase that contains mainly minerals of varying sizes as well as organic compounds. In order to understand porosity better a series of equations have b ...

for precipitation absorption. Also, their roots can reach moisture more deeply than other grasses and annual plants during seasonal or climatic droughts. The plants provide

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

and food for insects (including

Lepidoptera Lepidoptera ( ) is an order of insects that includes butterflies and moths (both are called lepidopterans). About 180,000 species of the Lepidoptera are described, in 126 families and 46 superfamilies, 10 percent of the total described speci ...

), birds, small animals and larger

herbivore A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage or marine algae, for the main component of its diet. As a result of their plant diet, herbivorous animals typically have mouthpar ...

s, and support beneficial soil

mycorrhiza A mycorrhiza (from Greek μύκης ', "fungus", and ῥίζα ', "root"; pl. mycorrhizae, mycorrhiza or mycorrhizas) is a symbiotic association between a fungus and a plant. The term mycorrhiza refers to the role of the fungus in the plan ...

. The leaves supply material, such as for

basket weaving Basket weaving (also basketry or basket making) is the process of weaving or sewing pliable materials into three-dimensional artifacts, such as baskets, mats, mesh bags or even furniture. Craftspeople and artists specialized in making basket ...

, for

indigenous peoples Indigenous peoples are culturally distinct ethnic groups whose members are directly descended from the earliest known inhabitants of a particular geographic region and, to some extent, maintain the language and culture of those original people ...

and

contemporary art Contemporary art is the art of today, produced in the second half of the 20th century or in the 21st century. Contemporary artists work in a globally influenced, culturally diverse, and technologically advancing world. Their art is a dynamic ...

ists. Tussock and bunch grasses occur in almost any habitat where other grasses are found, including:

grasslands A grassland is an area where the vegetation is dominated by grasses ( Poaceae). However, sedge (Cyperaceae) and rush ( Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur nat ...

savannas A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to ...

and

prairie Prairies are ecosystems considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and a composition of grasses, herbs, and shrubs, rather than trees, as the ...

wetlands A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The p ...

and

estuaries An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environme ...

riparian zone A riparian zone or riparian area is the interface between land and a river or stream. Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth. Plant habitats and communities along the river margins and banks a ...

shrubland Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It ...

s and

scrubland Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It ...

woodland A woodland () is, in the broad sense, land covered with trees, or in a narrow sense, synonymous with wood (or in the U.S., the '' plurale tantum'' woods), a low-density forest forming open habitats with plenty of sunlight and limited shade (see ...

s and

forest A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

montane Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial ...

and

alpine Alpine may refer to any mountainous region. It may also refer to: Places Europe * Alps, a European mountain range ** Alpine states, which overlap with the European range Australia * Alpine, New South Wales, a Northern Village * Alpine National P ...

zones,

tundra In physical geography, tundra () is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. The term ''tundra'' comes through Russian (') from the Kildin Sámi word (') meaning "uplands", "treeless mou ...

and

dune A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex is called a dune field, while broad, f ...

s, and

deserts A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to denudation. About on ...

Fire resistance

In western North American

wildfire A wildfire, forest fire, bushfire, wildland fire or rural fire is an unplanned, uncontrolled and unpredictable fire in an area of combustible vegetation. Depending on the type of vegetation present, a wildfire may be more specifically identi ...

s, bunch grasses tend to smolder and not ignite into flames, unlike

invasive species An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species adv ...

of annual grasses that contribute to a fire's spreading.

Genera

:Examples: *''

Brachypodium ''Brachypodium'' is a genus of plants in the grass family, widespread across much of Africa, Eurasia, and Latin America. The genus is classified in its own tribe Brachypodieae. Flimsy upright stems form tussocks. Flowers appear in compact s ...

'' *''

Calamagrostis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'' *''

Chionochloa ''Chionochloa'' is a genus of tussock grass in the family Poaceae, found primarily in New Zealand with one known species in New Guinea and another on Lord Howe Island (part of Australia). Some of the species are referred to as snowgrass. Most o ...

'' *''

Deschampsia ''Deschampsia'' is a genus of plants in the grass family, commonly known as hair grass or tussock grass. The genus is widespread across many countries.

'' *''

Festuca ''Festuca'' (fescue) is a genus of flowering plants belonging to the grass family Poaceae (subfamily Pooideae). They are evergreen or herbaceous perennial tufted grasses with a height range of and a cosmopolitan distribution, occurring on ever ...

'' *'' Heteropogon'' (tropical climates) *'' Leymus'' *'' Melica'' *'' Muhlenbergia'' *''

Nassella ''Nassella'', or needlegrass, is a New World genus of over 100 perennial bunchgrasses found from North America through South America. The Latin word ''nassa'' refers to "a basket with a narrow neck". It is usually considered segregate from the ge ...

'' *''

Stipa ''Stipa'' is a genus of around 300 large perennial hermaphroditic grasses collectively known as feather grass, needle grass, and spear grass. They are placed in the subfamily Pooideae and the tribe Stipeae, which also contains many species for ...

'' *'' Triodia'', formerly ''Plectrachne'' (Australia)

Species

Australia

*''

Gymnoschoenus sphaerocephalus ''Gymnoschoenus sphaerocephalus'', commonly known as buttongrass, is a species of tussock-forming sedge from southeastern Australia. It forms part of a unique habitat in Tasmania. It was originally described as ''Chaetospora sphaerocephala'' by ...

'' – button grass *''

Joycea pallida ''Rytidosperma pallidum'' (syn. '' Joycea pallida''), commonly known as red-anther wallaby grass, is an Australian species of tussock grass found in Victoria, New South Wales and the Australian Capital Territory. The grass has flowers in Decemb ...

'' – red anther wallaby grass *''

Poa labillardierei ''Poa labillardierei'', also known as common tussock-grass, is a species of tussock grass that is endemic to Australia. The species was formally described in 1854 by German botanist and physician Ernst Gottlieb von Steudel Ernst Gottlieb von ...

'' – common tussock-grass *''

Poa sieberiana ''Poa sieberiana'', commonly known as grey tussock-grass and snow grass, is a species of tussock grass that is endemic to Australia. The species was formally described in 1827 by German botanist Kurt Sprengel Kurt Polycarp Joachim Sprengel ...

'' – grey tussock-grass

New Zealand

*''

Chionochloa australis ''Chionochloa'' is a genus of tussock grass in the family Poaceae, found primarily in New Zealand with one known species in New Guinea and another on Lord Howe Island (part of Australia). Some of the species are referred to as snowgrass. Most o ...

'' – carpet grass *''

Chionochloa flavescens ''Chionochloa flavescens'', known as broad-leaved snow tussock or haumata in Māori. Endemic to New Zealand, there are several different sub species that look very similar. The leaves which are up to one centimetre wide is larger than most tussoc ...

'' – snow tussock *''

Chionochloa oreophila ''Chionochloa'' is a genus of tussock grass in the family Poaceae, found primarily in New Zealand with one known species in New Guinea and another on Lord Howe Island (part of Australia). Some of the species are referred to as snowgrass. Most o ...

'' – snow-patch grass *''

Chionochloa rubra ''Chionochloa rubra'', known commonly as red tussock grass, is a species of tussock grass in the grass family, endemic to New Zealand. Description New Zealand has 22 endemic species of ''Chionochloa'', including ''Chionochloa rubra'', which ha ...

'' – red tussock *''

Festuca novaezelandiae ''Festuca'' (fescue) is a genus of flowering plants belonging to the grass family Poaceae (subfamily Pooideae). They are evergreen or herbaceous perennial tufted grasses with a height range of and a cosmopolitan distribution, occurring on every ...

'' – fescue tussock or hard tussock *''

Poa cita ''Poa cita'', commonly known as the silver tussock, or wī, which is also the Māori name, is a grass of the family Poaceae that is native to New Zealand. ''Poa cita'' was described and named by Elizabeth Edgar in 1986, having previously being na ...

'' – silver tussock *''

Poa colensoi ''Poa colensoi'', the blue tussock, is a species of cool-season grass in the family Poaceae Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the ...

'' – blue tussock *'' Poa foliosa'' – muttonbird poa

North America

:Bunch grasses: * ''

Aristida purpurea ''Aristida purpurea'' is a species of grass native to North America which is known by the common name purple three-awn. Distribution This grass is fairly widespread and can be found across the western two thirds of the United States, much of ...

'' – purple three-awn * ''

Bouteloua gracilis ''Bouteloua gracilis'', the blue grama, is a long-lived, warm-season ( C4) perennial grass, native to North America. It is most commonly found from Alberta, Canada, east to Manitoba and south across the Rocky Mountains, Great Plains, and U.S. M ...

'' – blue grama * '' Calamagrostis foliosa'' – leafy reedgrass (

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to California) * ''

Calamagrostis nutkaensis ''Calamagrostis nutkaensis'' is a species of grass known by the common names Pacific reedgrass and Nootka reedgrass. It is native to western North America from Alaska to central California, where it is mainly a coastal species growing in moist ...

'' – Pacific reedgrass * ''

Calamagrostis purpurascens ''Calamagrostis purpurascens'', is a perennial grass commonly known as purple reedgrass, purple pinegrass, or alpine reedgrass. It grows 30 to tall. Description ''Calamagrostis purpurascens'' is a large, clump forming, perennial grass; growing ...

'' – purple reedgrass * '' Danthonia californica'' – California oatgrass * '' Eriophorum vaginatum'' – hare's-tail cottongrass * ''

Festuca californica ''Festuca californica'' is a species of grass known by the common name California fescue. This fescue species is native to the U.S. states of California and Oregon, where it is a member of many plant communities, including chaparral and oak wo ...

'' – California fescue * ''

Festuca idahoensis ''Festuca idahoensis'' is a species of grass known by the common names Idaho fescue and blue bunchgrass. It is native to western North America, where it is widespread and common. It can be found in many ecosystems, from shady forests to open plai ...

'' – Idaho fescue * ''

Festuca rubra ''Festuca rubra'' is a species of grass known by the common name red fescue or creeping red fescue. It is widespread across much of the Northern Hemisphere and can tolerate many habitats and climates. It is best adapted to well-drained soils in c ...

'' – red fescue * ''

Koeleria macrantha ''Koeleria macrantha'' is a species of grass known by the common name prairie Junegrass in North America and crested hair-grass in the UK. It is widespread across much of Eurasia and North America. It occurs in many habitat types, especially prai ...

'' – junegrass * ''

Leymus condensatus ''Leymus condensatus'', the giant wildrye, is a wild rye grass native to eastern Oregon, California and northern Mexico. Description ''Leymus condensatus'' also commonly referred to as ''Canyon Prince'' is a type of wild rye that is part of t ...

'' – giant wildrye * ''

Melica californica ''Melica californica'' is a species of grass known by the common name California melic. Distribution This grass is native to Oregon and California, where it grows in many types of habitat, from mountain forests to open grassland at sea level. D ...

'' – California melic * ''

Melica imperfecta ''Melica imperfecta'' is a species of grass known by the common name smallflower melic and little California melic. It is native to the Arizona, California, and Nevada in the United States and Baja California in Mexico. It grows in chaparral, ...

'' – smallflower melic * ''

Muhlenbergia rigens ''Muhlenbergia rigens'', commonly known as deergrass, is a warm season perennial bunchgrass. It is found in sandy or well-drained soils below in elevation in the Southwestern United States and parts of Mexico. Description Deergrass is character ...

'' – deer grass * ''

Nassella lepida ''Nassella lepida'' ( syn. ''Stipa lepida'') is a species of grass known by the common names foothill needlegrass,Nassella pulchra ''Nassella pulchra'', basionym ''Stipa pulchra'', is a species of grass known by the common names purple needlegrass and purple tussockgrass. It is native to the U.S. state of California, where it occurs throughout the coastal hills, valleys, an ...

'' – purple needlegrass (the state grass of California) * ''

Poa secunda ''Poa secunda'' (variously known by the common names of Sandberg bluegrass, alkali bluegrass, big bluegrass, Canby's bluegrass, Nevada bluegrass, one-sided bluegrass, Pacific bluegrass, pine blugrass, slender bluegrass, wild bluegrass, and curly ...

'' – pine bluegrass * ''

Sporobolus heterolepis ''Sporobolus heterolepis'', commonly known as prairie dropseed, is a species of prairie grass native to the tallgrass and mixed grass prairies of central North America from Texas to southern Canada. It is also found further east, to the Atlant ...

'' – prairie dropseed * ''

Sporobolus virginicus ''Sporobolus virginicus'', known by numerous common names including seashore dropseed, marine couch, sand couch, salt couch grass, saltwater couch, coastal rat-tail grass, and nioaka, is a species of grass with a wide distribution. Description ...

'' – salt couch grass * ''

Tripsacum dactyloides ''Tripsacum dactyloides'', commonly called eastern gamagrass, or Fakahatchee grass, is a warm-season, sod-forming bunch grass. It is widespread in the Western Hemisphere, native from the eastern United States to northern South America.

'' – eastern gamagrass

South America

*'' Deschampsia cespitosa'' – tufted hair-grass (up through North America) *''

Nassella trichotoma ''Nassella trichotoma'', the serrated tussock, is a type of bunchgrass plant, native in Argentina, Uruguay, Chile, and Peru. It is on the list of Weeds of National Significance Weeds of National Significance (WoNS) is a list of the most proble ...

'' – serrated tussock (common pasture

weed A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place", or a plant growing where it is not wanted.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24. ...

in Australia) *''

Poa flabellata ''Poa flabellata'', commonly known as tussac grass or just tussac, is a tussock grass native to southern South America, the Falkland Islands, South Georgia and other islands in the South Atlantic. There are also two isolated records from the herb ...

'' – tussac grass (

synonyms A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are ...

: ''Parodiochloa flabellata'', ''Festuca flabellata'', ''Dactylis caespitosa'') Flora near Keetmanshoop, Namibia

Africa

*''

Heteropogon contortus ''Heteropogon contortus'' is a tropical, perennial tussock grass with a native distribution encompassing Southern Africa, southern Asia, Northern Australia, Oceania, and southwestern North America. The species has also become a naturalised weed i ...

'' – perennial tussock grass (to Asia, Australasia, Oceania)

Europe

*''

Ampelodesmos mauritanicus ''Ampelodesmos'' is a genus of Mediterranean plants in the grass family, which is known by the common names stramma, Mauritania grass, rope grass, and dis(s) grass. It is classified in its own tribe Ampelodesmeae within the grass subfamily Pooid ...

'' – rope grass *'' Brachypodium sylvaticum'' – false-brome *''

Molinia caerulea ''Molinia caerulea'', known by the common name purple moor-grass, is a species of grass that is native to Europe, west Asia, and north Africa. It grows in locations from the lowlands up to in the Alps. Like most grasses, it grows best in acid so ...

'' – purple moor grass (to west Asia and north Africa)

References

External links

California Native Grasslands Association
Bunchgrass species & habitats: preservation & restoration * http://www.landcareresearch.co.nz/resources/identification/plants/grass-key {{Authority control Grasses Biogeography Poaceae Grasslands

Fire resistance

Genera

Species

Australia

New Zealand

North America

South America

Africa

Europe

See also

Non-Poaceae tussocks

References

External links