Lolium perenne

Last updated

Lolium perenne
Lolium perenne Engels raaigras doorschietend.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pooideae
Genus: Lolium
Species:
L. perenne
Binomial name
Lolium perenne
L.

Lolium perenne, common name perennial ryegrass, [1] [ failed verification ]English ryegrass, winter ryegrass, or ray grass, is a grass from the family Poaceae. It is native to Europe, Asia and northern Africa, but is widely cultivated and naturalised around the world.

Contents

Lolium perenne, showing ligule and ribbed leaf Lolium perenne showing ligule and ribbed leaf.JPG
Lolium perenne, showing ligule and ribbed leaf

Description

The plant is a low-growing, tufted, hairless grass, with a bunching (or tillering) growth habit. The leaves are dark green, smooth and glossy on the lower surface, with untoothed parallel sides and prominent parallel veins on the upper surface. The leaves are folded lengthwise in bud (unlike the rolled leaves of Italian ryegrass, Lolium multiflorum ) with a strong central keel, giving a flattened appearance. The ligule is very short and truncated and often difficult to see. The small white auricles grip the stem at the base of the leaf blade. Leaf sheaths at the base are usually tinged pink and hairless. Stems grow up to 90 cm. [2] [ failed verification ]

The inflorescence is unbranched, with spikelets on alternating sides edgeways-on to the stem. Each spikelet has only a single glume, on the side away from the stem, and between four and 14 florets without awns, unlike Italian ryegrass. The anthers are pale yellow, and the plant flowers from May to November. Perennial ryegrass has a fibrous root system, with thick main roots and thinner lateral branches. Roots are usually arbuscular mycorrhizal.

Distribution

Perennial ryegrass is native to Europe, the Middle East, North Africa and eastwards to central Asia. As a useful species of grass for fodder and grazing livestock, it has been taken by farmers settling in new areas including North America, South Africa and Australia. It can be used to prevent erosion and to stabilise soils, as well as creating a hardwearing turf for lawns and golf courses. With its great ability to set seed, its ease of germination and vigour, it has spread from the fields where it has been planted to roadsides, trackways, footpaths, wasteland, river banks and sand dunes. In countries where it has been introduced, it may be regarded as an invasive species that competes with native plants. [3] [4]

Cultivation and uses

Perennial ryegrass is an important pasture and forage plant, and is used in many pasture seed mixes. In fertile soil, it produces a high grass yield, and in Britain and Ireland, it is frequently sown for short-term ley grassland, often with red or white clover ( Trifolium ).

In Britain, it is also used as an indicator of nonspecies-rich grassland, as it outcompetes the rarer plants and grasses, especially in fertile soils. Agri-environment schemes such as the Countryside Stewardship Scheme, Environmentally Sensitive Areas Scheme, and Environmental Stewardship give funding to species-rich grasslands that do not have an abundance of ryegrass.

Selected seed mixes are used extensively for sports pitches, especially winter sports in temperate climates, because of its wear resistance and ability to regenerate.

It is commonly used in the southwest United States to overseed winter lawns. Bermudagrass is a typical summertime grass in states such as Arizona, since it is able to withstand the high temperatures. However, bermudagrass goes dormant during the cooler winter months. Rather than have brown lawns, many homeowners, public areas, and golf courses overseed these lawns with perennial ryegrass in early to mid-September.

It is also the grass used on the courts at the All England Lawn Tennis Club in Wimbledon. Since 2001, the courts have been sown with 100% perennial ryegrass to "improve durability and strengthen the sward to withstand better the increasing wear of the modern game". [5]

MLB playing surfaces

Similar species

Italian ryegrass, Lolium multiflorum , differs in the fact that each scale in the spikelet has a long bristle at the top. Its stem is also round rather than folded.

Couch, Elymus repens , has spikelets set on the broadside of the stem rather than edge on. [6]

Related Research Articles

<span class="mw-page-title-main">Poaceae</span> Family of flowering plants commonly known as grasses

Poaceae or 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 lawns and pasture. The latter are commonly referred to collectively as grass.

<span class="mw-page-title-main">Forage</span> Plant material eaten by grazing livestock

Forage is a plant material 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 used more loosely to include similar plants cut for fodder and carried to the animals, especially as hay or silage.

<i>Alopecurus pratensis</i> Species of flowering plants in the grass family Poaceae

Alopecurus pratensis, known as the meadow foxtail or the field meadow foxtail, is a perennial grass belonging to the grass family (Poaceae). It is native to Europe and Asia.

<i>Poa pratensis</i> Species of plant

Poa pratensis, commonly known as Kentucky bluegrass, smooth meadow-grass, or common meadow-grass, is a perennial species of grass native to practically all of Europe, North Asia and the mountains of Algeria and Morocco. It is a common and incredibly popular lawn grass in North America with the species being spread over all of the cool, humid parts of the United States, despite the fact that it is not native to North America. The Spanish Empire brought the seeds of Kentucky bluegrass to the New World in mixtures with other grasses. In its native range, Poa pratensis forms a valuable pasture plant, characteristic of well-drained, fertile soil. It is also used for making lawns in parks and gardens and has established itself as a common invasive weed across cool moist temperate climates like the Pacific Northwest and the Northeastern United States. When found on native grasslands in Canada, for example, it is considered an unwelcome exotic plant, and is indicative of a disturbed and degraded landscape.

<i>Trifolium repens</i> Flowering plant, bean family Fabaceae

Trifolium repens, the white clover, is a herbaceous perennial plant in the bean family Fabaceae. It is native to Europe, including the British Isles, and central Asia and is one of the most widely cultivated types of clover. It has been widely introduced worldwide as a forage crop, and is now also common in most grassy areas of North America, Australia and New Zealand. The species includes varieties often classed as small, intermediate and large, according to height, which reflects petiole length. The term 'white clover' is applied to the species in general, 'Dutch clover' is often applied to intermediate varieties, and 'ladino clover' is applied to large varieties.

<i>Lolium</i> Genus of plants (tufted grasses)

Lolium is a genus of tufted grasses in the bluegrass subfamily (Pooideae). It is often called ryegrass, but this term is sometimes used to refer to grasses in other genera.

<i>Poa annua</i> Species of plant

Poa annua, or annual meadow grass, is a widespread low-growing turfgrass in temperate climates. Notwithstanding the reference to annual plant in its name, perennial bio-types do exist. This grass originated as a hybrid between Poa supina and Poa infirma. Major chromosomal rearrangements after polyploidy have contributed to variation in genome size in Poa annua.

<i>Festuca pratensis</i> Species of grass

Festuca pratensis, the meadow fescue, is a perennial species of grass, which is often used as an ornamental grass in gardens, and is also an important forage crop.

<i>Cynosurus cristatus</i> Species of grass

Cynosurus cristatus, the crested dog's-tail, is a short-lived perennial grass in the family Poaceae, characterised by a seed head that is flat on one side. It typically grows in species rich grassland. It thrives in a variety of soil types but avoids the acid and calcareous extremes of pH, and prefers well drained soils. It may be grown as an ornamental plant.

<i>Poa trivialis</i> Species of grass

Poa trivialis, is a perennial plant regarded in the US as an ornamental plant. It is part of the grass family.

<i>Festuca arundinacea</i> Species of flowering plant

Festuca arundinacea (syn., Schedonorus arundinaceus and Lolium arundinaceum) is a species of grass commonly known as tall fescue. It is a cool-season perennial C3 species of bunchgrass native to Europe. It is an important forage grass throughout Europe, and many cultivars have been used in agriculture. It is also an ornamental grass in gardens, and a phytoremediation plant.

<i>Lolium multiflorum</i> Species of flowering plant

Lolium multiflorum is a ryegrass native to temperate Europe, though its precise native range is unknown.

Pythiumdisease, also known as "Pythiumblight," "cottony blight," or "grease spot," is a highly destructive turfgrass disease caused by several different Pythium species. All naturally cultivated cool-season turfgrasses are susceptible to Pythium and if conditions are favorable to Pythium it can destroy a whole turfgrass stand in a few days or less. Pythium favors hot and very humid weather and will usually develop in low areas or swales in the turfgrass.

<i>Paspalum vaginatum</i> Species of plant

Paspalum vaginatum is a species of grass known by many names, including seashore paspalum, biscuit grass, saltwater couch, silt grass, and swamp couch. It is native to the Americas, where it grows in tropical and subtropical regions. It is found throughout the other tropical areas of the world, where it is an introduced species and sometimes an invasive weed. It is also cultivated as a turfgrass in many places.

<i>Festuca gigantea</i> Species of grass

Festuca gigantea, or giant fescue, is a plant species in the grass family, Poaceae. Because this and other members of Festuca subgenus Schedonorus have more in common morphologically with members of the genus Lolium than with Festuca and often produce fertile hybrids with other Lolium species, Festuca gigantea has been recently published as Lolium giganteum(L.) Darbysh. (1993) and then as Schedonorus giganteus(L.) Holub (1998). Sources vary as to which placement is more acceptable.

<i>Digitaria didactyla</i> Species of flowering plant

Digitaria didactyla is a species of grass known by the common names blue couch, Queensland blue couch, blue serangoon grass, green serangoon grass, blue stargrass, and petit gazon. It is native to Mauritius, Réunion, parts of mainland Africa, and Madagascar. It has been introduced widely outside its native range, mainly for use as a pasture and turf grass. It has naturalized in some regions.

<i>Lolium rigidum</i> Species of grass

Lolium rigidum is a species of annual grass. Common names by which it is known include annual ryegrass, a name also given to Italian ryegrass, rigid ryegrass, stiff darnel, Swiss ryegrass and Wimmera ryegrass. It is a native of southern Europe, northern Africa, the Middle East and the Indian subcontinent and is grown as a forage crop, particularly in Australia, where it is also a serious and economically damaging crop weed.

Perennial ryegrass staggers is poisoning by peramine, lolitrem B, and other toxins that are contained in perennial ryegrass, and produced by the endophyte fungus Epichloë festucae which can be present in all parts of the grass plant, but tends to be concentrated in the lower part of the leaf sheaths, the flower stalks and seeds. This condition can affect horses, cattle, sheep, farmed deer and llamas. It regularly occurs in New Zealand and is known spasmodically from Australia, North and South America, and Europe.

The annual bluegrass weevil, scientific name Listronotus maculicollis, is a turfgrass insect pest which feeds mainly on annual bluegrass. They prefer to feed on very low mown grass, and are thus found mostly on golf courses or grass tennis courts. ABWs, as they are often referred to, were only found in the Northeastern United States until the 2000s when sightings began to expand. In recent years they have been found as far north as Ontario and Quebec, as far west as Ohio, and as far south as North Carolina. Their choice of hosts has also expanded, and they have been reported feeding on perennial ryegrass and creeping bentgrass.

<i>Epichloë hybrida</i> Species of fungus

Epichloë hybrida is a systemic, asexual and seed-transmissible endophyte of perennial ryegrass within the genus Epichloë. An interspecies allopolyploid of two haploid parent species Epichloë typhina and Epichloë festucae var. lolii, E. hybrida was first identified in 1989, recognized as an interspecific hybrid in 1994, but only formally named in 2017. Previously this species was often informally called Epichloë typhina x Epichloë festucae var. lolii, or referenced by the identifier of its most well-studied strain, Lp1. Epichloë hybrida is a symbiont of perennial ryegrass where its presence is almost entirely asymptomatic. The species has been commercialized for the benefits of its anti-insect compounds in a pasture setting, although it is now more commonly used as an experimental model system for studying interspecific hybridization in fungi.

References

  1. BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  2. BSBI Description Archived 2011-07-17 at the Wayback Machine retrieved 10 December 2010.
  3. "Lolium perenne (perennial ryegrass)". Invasive Species Compendium. CABI. Retrieved 8 December 2015.
  4. Hew M, Lee J, Varese N, Aui PM, McKenzie CI, Wines BD, Aumann H, Rolland JM, Mark Hogarth P, van Zelm MC, O'Hehir RE (2020). "Epidemic thunderstorm asthma susceptibility from sensitization to ryegrass (Lolium perenne) pollen and major allergen Lol p 5". Allergy. 75 (9): 2369–72. doi:10.1111/all.14319. PMC   7540598 . PMID   32293712.
  5. "Grass Courts". www.wimbledon.com. Retrieved 2017-07-08.
  6. Reader's Digest Nature Lovers Library Field Guide To Wild Flowers Of Britain, 1998, page 416