''Laurus'' () is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

evergreen In botany, an evergreen is a plant which has foliage that remains green and functional through more than one growing season. This also pertains to plants that retain their foliage only in warm climates, and contrasts with deciduous plants, whic ...

trees or shrubs belonging to the laurel family, Lauraceae. The genus contains three or more species, including the bay laurel or sweet bay, ''L. nobilis'', widely cultivated as an ornamental plant and a culinary herb.

Description

They are slow-growing, large, evergreen aromatic shrubs or trees with alternate, ovate leaves and insignificant yellow male and female flowers borne on separate plants ( dioecious). They are frost-hardy but in temperate zones they require a sheltered spot in full sun that is not subject to prolonged freezing. Plants in pots can be moved into a cold greenhouse during the winter months.

Species

The number of species in the genus has not yet been fully resolved. The following may or may not be included. *''

Laurus azorica ''Laurus azorica'', the Azores laurel or Macaronesian laurel, is a small, evergreen tree in the laurel family (Lauraceae), found only on the Azores island group in the North Atlantic. Description The Azores laurel is a small dioecious tree, grow ...

'', Azores laurel, is native to the

Azores ) , motto =( en, "Rather die free than subjected in peace") , anthem= ( en, "Anthem of the Azores") , image_map=Locator_map_of_Azores_in_EU.svg , map_alt=Location of the Azores within the European Union , map_caption=Location of the Azores wi ...

. *''

Laurus nobilis ''Laurus nobilis'' is an aromatic evergreen tree or large shrub with green, glabrous (smooth) leaves. It is in the flowering plant family Lauraceae. It is native to the Mediterranean region and is used as bay leaf for seasoning in cooking. ...

'', bay Laurel, true laurel, sweet bay, is used as an ornamental plant and culinary herb (one type of bay leaf) used in Mediterranean style dishes. It was also the original source of the

laurel wreath A laurel wreath is a round wreath made of connected branches and leaves of the bay laurel (), an aromatic broadleaf evergreen, or later from spineless butcher's broom (''Ruscus hypoglossum'') or cherry laurel (''Prunus laurocerasus''). It is a s ...

of ancient

Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders ...

. It is native to the

Mediterranean region In biogeography, the Mediterranean Basin (; also known as the Mediterranean Region or sometimes Mediterranea) is the region of lands around the Mediterranean Sea that have mostly a Mediterranean climate, with mild to cool, rainy winters and wa ...

. *''

Laurus novocanariensis ''Laurus novocanariensis'' is a large shrub or tree with aromatic, shiny dark-green foliage. belonging to the evergreen tree genus ''Laurus'' of the laurel family, Lauraceae. The genus includes three species, whose diagnostic key characters ofte ...

'', formerly included in ''L. azorica'', native to Madeira and the Canary Islands.

Fossil history

Fossils dating from before the

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in ...

glaciation A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate be ...

s show that species of ''Laurus'' were formerly distributed more widely around the Mediterranean and

North Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...

, when the climate was more humid and mild than at present. It is currently thought that the drying of the Mediterranean basin during the glaciations caused ''Laurus'' to retreat to the mildest climate refuges, including southern

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...

and the

Macaronesia Macaronesia (Portuguese: ''Macaronésia,'' Spanish: ''Macaronesia'') is a collection of four volcanic archipelagos in the North Atlantic, off the coasts of Africa and Europe. Each archipelago is made up of a number of Atlantic oceanic islands ...

n islands. With the end of the last glacial period, ''L. nobilis'' recovered some of its former range around the Mediterranean.

References

External links

{{Taxonbar, from=Q21188 Lauraceae genera Taxa named by Carl Linnaeus Dioecious plants Lauraceae

Description

Species

Fossil history

References

Further reading

External links