genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of plants in the
grass family
Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivated in ...
, found in many countries on all inhabited continents and many islands.
''Eragrostis'' is commonly known as lovegrass or canegrass. The name of the genus is derived from the
Greek
Greek may refer to:
Anything of, from, or related to Greece, a country in Southern Europe:
*Greeks, an ethnic group
*Greek language, a branch of the Indo-European language family
**Proto-Greek language, the assumed last common ancestor of all kno ...
words ἔρως (''érōs''), meaning "love", and ἄγρωστις (''ágrōstis''), meaning "grass".
Lovegrass is commonly used as
livestock
Livestock are the Domestication, domesticated animals that are raised in an Agriculture, agricultural setting to provide labour and produce diversified products for consumption such as meat, Egg as food, eggs, milk, fur, leather, and wool. The t ...
fodder
Fodder (), also called provender (), is any agriculture, agricultural foodstuff used specifically to feed domesticated livestock, such as cattle, domestic rabbit, rabbits, sheep, horses, chickens and pigs. "Fodder" refers particularly to food ...
. The seeds appear to be of high nutritional value for some animals, but they are also very tiny and collecting them for human food is cumbersome and hence uncommon. A notable exception is
teff
''Teff'' (), also known as ''Eragrostis tef'', Williams lovegrass, or annual bunch grass, is an annual grass, a species of lovegrass native to Ethiopia, where it first originated in the Ethiopian Highlands. It is cultivated for its edible seed ...
bread
Bread is a baked food product made from water, flour, and often yeast. It is a staple food across the world, particularly in Europe and the Middle East. Throughout recorded history and around the world, it has been an important part of many cu ...
s on the
Horn of Africa
The Horn of Africa (HoA), also known as the Somali Peninsula, is a large peninsula and geopolitical region in East Africa.Robert Stock, ''Africa South of the Sahara, Second Edition: A Geographical Interpretation'', (The Guilford Press; 2004), ...
, such as
Ethiopia
Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the east, Ken ...
n ''
injera
Injera (, ; ; ) is a sour fermented pancake-like flatbread with a slightly spongy texture, traditionally made of teff flour. In Ethiopia and Eritrea, injera is a staple. Injera is central to the dining process in Amhara community, like br ...
'' and
Somalia
Somalia, officially the Federal Republic of Somalia, is the easternmost country in continental Africa. The country is located in the Horn of Africa and is bordered by Ethiopia to the west, Djibouti to the northwest, Kenya to the southwest, th ...
famine food
A famine food or poverty food is any inexpensive or ready available food used to nourish people in times of hunger and starvation, whether caused by extreme poverty, such as during economic depression or war, or by natural disasters such as dro ...
s in
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
and
Chad
Chad, officially the Republic of Chad, is a landlocked country at the crossroads of North Africa, North and Central Africa. It is bordered by Libya to Chad–Libya border, the north, Sudan to Chad–Sudan border, the east, the Central Afric ...
, respectively.
Other species, such as '' E. amabilis'', are used as
ornamental plant
Ornamental plants or ''garden plants'' are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants and garden varieties tend to be specially bred cultivars th ...
pūjā
() is a worship ritual performed by Hindus to offer devotional homage and prayer to one or more deities, to host and honour a guest, or to spiritually celebrate an event. It may honour or celebrate the presence of special guests, or their mem ...
hyperaccumulator
A hyperaccumulator is a plant capable of growing in soil or water with high concentrations of metals, absorbing them through their roots, and concentrating extremely high levels of metals in their tissues. The metals are concentrated at levels th ...
of
caesium-137
Caesium-137 (), cesium-137 (US), or radiocaesium, is a radioactive isotope of caesium that is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nucle ...
and can be grown to remove the highly
toxic
Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a subst ...
radioactive
Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is conside ...
atoms from the environment.
Weeping lovegrass
''Eragrostis curvula'' is a species of grass known by the common name weeping lovegrass. Other common names include Boer lovegrass, curved lovegrass, Catalina lovegrass, and African lovegrass.
It is native to southern Africa. It is an introduced ...
('' E. curvula'') has been planted extensively to prevent
soil erosion
Soil erosion is the denudation or wearing away of the Topsoil, upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, Atmosphere of Ea ...
.
Seed dispersal
In spermatophyte plants, seed dispersal is the movement, spread or transport of seeds away from the parent plant.
Plants have limited mobility and rely upon a variety of dispersal vectors to transport their seeds, including both abiotic vectors, ...
is often done by passing animals; the grains' hooks latch on to fur or hair, or to clothes. Others are wind or gravity dispersed. Several
herbivore
A herbivore is an animal anatomically and physiologically evolved to feed on plants, especially upon vascular tissues such as foliage, fruits or seeds, as the main component of its diet. These more broadly also encompass animals that eat ...
s feed on lovegrass, including
invertebrate
Invertebrates are animals that neither develop nor retain a vertebral column (commonly known as a ''spine'' or ''backbone''), which evolved from the notochord. It is a paraphyletic grouping including all animals excluding the chordata, chordate s ...
s such as the
caterpillar
Caterpillars ( ) are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths).
As with most common names, the application of the word is arbitrary, since the larvae of sawflies (suborder ...
s of the
Zabulon skipper
The Zabulon skipper (''Lon zabulon'') (sometimes called the southern dimorphic skipperJames A. Scott (1986). ''The Butterflies of North America''. Stanford University Press, Stanford, CA. ) is a North American butterfly first described by the ...
(''Lon zabulon'') and
vertebrate
Vertebrates () are animals with a vertebral column (backbone or spine), and a cranium, or skull. The vertebral column surrounds and protects the spinal cord, while the cranium protects the brain.
The vertebrates make up the subphylum Vertebra ...
s. The
extinct
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...
bluebuck
The bluebuck (Afrikaans: bloubok ) or blue antelope (''Hippotragus leucophaeus'') is an extinct species of antelope that lived in South Africa until around 1800. It was smaller than the other two species in its genus ''Hippotragus,'' the roan a ...
(''Hippotragus leucophaeus'') was known to graze these grasses. The dense bunches also provide cover for small animals such as the rare Botteri's sparrow (''Aimophila botterii''). Lovegrasses may be important groundcover on oceanic islands like
Laysan
Laysan (; ) is one of the Northwestern Hawaiian Islands, located northwest of Honolulu. It has one land mass of , about in size. It is an atoll of sorts, although the land completely surrounds Laysan Lake, some above sea level, that has a sa ...
, where other plants are rare.
Taxonomy
''Eragrostis'' is the type genus of the
tribe
The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide use of the term in English is in the discipline of anthropology. The definition is contested, in part due to conflict ...
Eragrostideae
Eragrostideae is a Tribe (biology), tribe of Poaceae, grasses in subfamily Chloridoideae. It contains roughly 500 species, which all use the C4 photosynthesis, C4 photosynthetic pathway.
The 14 genera are classified in three subtribes:
Refere ...
.
;Formerly included
Many species now considered better suited to other genera, including '' Cladoraphis
Coelachyrum
''Coelachyrum'' is a genus of Asian and African plants in the grass family.
Species
Six species are accepted.
* '' Coelachyrum brevifolium'' Hochst. & Nees - Algeria, Egypt, Mali, Mauritania, Niger, Nigeria, Chad, Sudan, Ethiopia, Eritrea, Somal ...
Desmazeria
''Desmazeria'' is a genus of Mediterranean plants in the grass family, related to ''Catapodium''.
The genus is named for John Baptiste Henri Joseph Desmazières, (1796-1862) a French merchant, amateur botanist, and editor of scientific journals. ...
Diplachne
''Diplachne'' is a genus of plants in the grass family, widespread over much of the world.Ectrosia
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 ...
Poa
''Poa'' is a genus of about 570 species of Poaceae, grasses, native to the temperate regions of both hemispheres. Common names include meadow-grass (mainly in Europe and Asia), bluegrass (mainly in North America), tussock (some New Zealand spe ...
'' etc.
Starr 041229-2580 Eragrostis atropioides.jpg, ''
Eragrostis atropioides
''Eragrostis'' is a large and widespread genus of plants in the grass family, found in many countries on all inhabited continents and many islands.
''Eragrostis'' is commonly known as lovegrass or canegrass. The name of the genus is derived fro ...
weeping lovegrass
''Eragrostis curvula'' is a species of grass known by the common name weeping lovegrass. Other common names include Boer lovegrass, curved lovegrass, Catalina lovegrass, and African lovegrass.
It is native to southern Africa. It is an introduced ...
Eragrostis variabilis
''Eragrostis variabilis'' is a species of grass known by the common names variable lovegrass, ''kawelu'', ''emoloa'', and ''kalamalo''. It is endemic to Hawaii, where it occurs on all the main islands plus Kure Atoll, Midway Atoll, Pearl and Her ...