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{{SPlantbox
{{SPlantbox
|familia=Poaceae
|genus=Lolium
|genus=Lolium
|species=perenne
|species=perenne
|common_name=Ryegrass
|habit=grass
|Min ht metric=cm
|Min ht metric=cm
|lifespan=perennial
|Temp Metric=°F
|Temp Metric=°F
|image=Upload.png
|image=Lolium.perenne1web.jpg
|image_width=240
|image_width=240
|image_caption=Perennial Ryegrass
}}
}}
'''Perennial Ryegrass''' (''Lolium perenne'') 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.
'''Perennial Ryegrass''' (''Lolium perenne'') 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.
Perennial ryegrass is a low-growing, tufted, hairless grass, lacking [[stolon]]s or [[rhizome]]s. The leaves are dark green, smooth and glossy, 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. The [[ligule]] is very short and truncate, often difficult to see, and small white auricles grip the stem at the base of the leaf blade. Leaf sheaths at the base are usually tinged pink.
Perennial ryegrass is a low-growing, tufted, hairless grass, lacking [[stolon]]s or [[rhizome]]s. The leaves are dark green, smooth and glossy, 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. The [[ligule]] is very short and truncate, often difficult to see, and small white auricles grip the stem at the base of the leaf blade. Leaf sheaths at the base are usually tinged pink.
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 multiple fertile florets without [[awn (botany)|awn]]s. Perennial ryegrass has a fibrous root system, with thick main roots and thinner lateral branches. Roots are usually [[arbuscular mycorrhiza]]l.
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 multiple fertile florets without [[awn (botany)|awn]]s. Perennial ryegrass has a fibrous root system, with thick main roots and thinner lateral branches. Roots are usually [[arbuscular mycorrhiza]]l.
{{Inc|
Lolium perenne, Linn. Perennial Rye-Grass. One to 3 ft. high, with shining lvs. and slender spike, 4-10 in. long: spikelets 8-16-fld., awnless or only short-awned. Dept. Agric., Div. Agrost. 7:301.
}}
==Cultivation==
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 is frequently sown for short-term ley grassland, often with red or white [[clover]] (Trifolium).
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 is frequently sown for short-term ley grassland, often with red or white [[clover]] (Trifolium).
Yearly overseeding might be needed to replace damaged grass caused by excesive heat during the summer. Maximun daytime temperature should not reach 90 F on a regular basis. Night time temperatures should hover around 68 F or less.
Yearly overseeding might be needed to replace damaged grass caused by excesive heat during the summer. Maximun daytime temperature should not reach 90 F on a regular basis. Night time temperatures should hover around 68 F or less.
===Propagation===
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===Pests and diseases===
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==Species==
<!-- This section should be renamed Cultivars if it appears on a page for a species (rather than genus), or perhaps Varieties if there is a mix of cultivars, species, hybrids, etc -->
==Gallery==
<gallery>
<gallery>
Image:Engels raaigras (Lolium perenne).jpg|<center>Single plant</center>
Image:Engels raaigras (Lolium perenne).jpg|<center>Single plant</center>
</gallery>
</gallery>
==See also==
==References==
*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963
<!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 -->
<!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 -->
<!--- xxxxx *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608 -->
{{Commons|Lolium perenne}}
==External links==
*{{wplink}}
{{stub}}
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