''Cormus domestica'', commonly known as service tree or sorb tree, is a species of tree native to western, central and southern Europe, northwest Africa (

Atlas Mountains The Atlas Mountains are a mountain range in the Maghreb in North Africa. They separate the Sahara Desert from the Mediterranean Sea and the Atlantic Ocean; the name "Atlantic" is derived from the mountain range, which stretches around through M ...

), and southwest Asia (east to the

Caucasus The Caucasus () or Caucasia (), is a region spanning Eastern Europe and Western Asia. It is situated between the Black Sea and the Caspian Sea, comprising parts of Southern Russia, Georgia, Armenia, and Azerbaijan. The Caucasus Mountains, i ...

).Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins .Mitchell, A.'' f. ''(1974). ''A Field Guide to the Trees of Britain and Northern Europe'', p 280. Collins It may be called true service tree, to distinguish it from the wild service tree (''

Torminalis glaberrima ''Torminalis'' is a genus of plants in the rose family, Rosaceae. The genus was formerly included within the genus ''Sorbus'' as the section ''Torminaria'', but the simple-leafed species traditionally classified in ''Sorbus'' are now considered ...

''). It is the only species in the

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

genus ''Cormus.'' It is a

deciduous In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed Leaf, leaves, usually in the autumn; to the shedding of petals, aft ...

tree growing to (rarely to ) tall with a trunk up to diameter, though it can also be a

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

tall on exposed sites. The

bark Bark may refer to: Common meanings * Bark (botany), an outer layer of a woody plant such as a tree or stick * Bark (sound), a vocalization of some animals (which is commonly the dog) Arts and entertainment * ''Bark'' (Jefferson Airplane album), ...

is brown, smooth on young trees, becoming fissured and flaky on old trees. The winter buds are green, with a sticky,

resin A resin is a solid or highly viscous liquid that can be converted into a polymer. Resins may be biological or synthetic in origin, but are typically harvested from plants. Resins are mixtures of organic compounds, predominantly terpenes. Commo ...

ous coating. The

leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...

are long,

pinnate Pinnation (also called pennation) is the arrangement of feather-like or multi-divided features arising from both sides of a common axis. Pinnation occurs in biological morphology, in crystals, such as some forms of ice or metal crystals, and ...

with 13–21 leaflets long and broad, with a bluntly acute apex, and a serrated margin on the outer half or two thirds of the leaflet. The

flower Flowers, also known as blooms and blossoms, are the reproductive structures of flowering plants ( angiosperms). Typically, they are structured in four circular levels, called whorls, around the end of a stalk. These whorls include: calyx, m ...

s are diameter, with five white petals and 20 creamy-white stamens; they are produced in

corymb Corymb is a botanical term for an inflorescence with the flowers growing in such a fashion that the outermost are borne on longer pedicels than the inner, bringing all flowers up to a common level. A corymb has a flattish top with a superficial re ...

s diameter in late spring, and are

hermaphrodite A hermaphrodite () is a sexually reproducing organism that produces both male and female gametes. Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic. The individuals of many ...

and insect pollinated. The

fruit In botany, a fruit is the seed-bearing structure in flowering plants (angiosperms) that is formed from the ovary after flowering. Fruits are the means by which angiosperms disseminate their seeds. Edible fruits in particular have long propaga ...

is a human-edible

pome In botany, a pome is a type of fruit produced by flowering plants in the subtribe Malinae of the family Rosaceae. Pome fruits consist of a central "core" containing multiple small seeds, which is enveloped by a tough membrane and surrounded by a ...

called the "serviceberry" that is long, greenish-brown, and often tinged red on the side exposed to sunlight; it can be either apple-shaped (f. ''pomifera'' (Hayne) Rehder) or pear-shaped (f. ''pyrifera'' (Hayne) Rehder).

Ecology

''Cormus domestica'' is generally rare, listed as an

endangered species An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching, inv ...

in Switzerland and Austria, and uncommon in Spain. In the UK, one very old tree that existed in the

Wyre Forest __NOTOC__ Wyre Forest is a large, semi-natural (partially unmanaged) woodland and forest measuring which straddles the borders of Worcestershire and Shropshire, England. Knowles Mill, a former corn mill owned by the National Trust lies wi ...

before being destroyed by fire in 1862 used to be considered native, but it is now generally considered to be more likely of cultivated origin, probably from a mediaeval monastery orchard planting. More recently, a small population of genuinely wild specimens was found growing as stunted

s on

cliff In geography and geology, a cliff or rock face is an area of Rock (geology), rock which has a general angle defined by the vertical, or nearly vertical. Cliffs are formed by the processes of weathering and erosion, with the effect of gravity. ...

s in south Wales (

Glamorgan Glamorgan (), or sometimes Glamorganshire ( or ), was Historic counties of Wales, one of the thirteen counties of Wales that existed from 1536 until their abolishment in 1974. It is located in the South Wales, south of Wales. Originally an ea ...

) and nearby southwest England (

Gloucestershire Gloucestershire ( , ; abbreviated Glos.) is a Ceremonial counties of England, ceremonial county in South West England. It is bordered by Herefordshire to the north-west, Worcestershire to the north, Warwickshire to the north-east, Oxfordshire ...

). It is a very rare species in Britain, occurring at only a handful of sites. Its largest English population is within the Horseshoe Bend

Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain, or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland, is a conservation designation denoting a protected area in the United Kingdom and Isle ...

at Shirehampton, near

Bristol Bristol () is a City status in the United Kingdom, cathedral city, unitary authority area and ceremonial county in South West England, the most populous city in the region. Built around the River Avon, Bristol, River Avon, it is bordered by t ...

. A further population has been discovered growing wild in

Cornwall Cornwall (; or ) is a Ceremonial counties of England, ceremonial county in South West England. It is also one of the Celtic nations and the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, ...

on a cliff in the upper Camel Estuary. It is a long-lived tree, with ages of 300–400 years estimated for some in Britain. The largest and perhaps one of the oldest known specimens in Europe is on an educational trail near the town of

Strážnice Strážnice () is a town in Hodonín District in the South Moravian Region of the Czech Republic. It has about 5,300 inhabitants. The historic town centre is well preserved and is protected as an Cultural monument (Czech Republic)#Monument zones, u ...

in the province of

Moravia Moravia ( ; ) is a historical region in the eastern Czech Republic, roughly encompassing its territory within the Danube River's drainage basin. It is one of three historical Czech lands, with Bohemia and Czech Silesia. The medieval and early ...

, Czech Republic. Its trunk measures in circumference, with a crown high and across. It is estimated to be around 450 years old.

Cultivation and uses

The fruit is a component of a

cider Cider ( ) is an alcoholic beverage made from the Fermented drink, fermented Apple juice, juice of apples. Cider is widely available in the United Kingdom (particularly in the West Country) and Ireland. The United Kingdom has the world's highest ...

-like drink which is still made in parts of Europe. Picked straight off the tree, it is highly

astringent An astringent (sometimes called adstringent) is a chemical that shrinks or constricts body tissues. The word derives from the Latin '' adstringere'', which means "to bind fast". Astringency, the dry, puckering or numbing mouthfeel caused by t ...

and gritty; however, when left to blet (overripen) it sweetens and becomes pleasant to eat.Bean, W. J. (1980). ''Trees and Shrubs Hardy in the British Isles'' 8th ed., vol. 4. John Murray . In the

Moravian Slovakia Moravian Slovakia, also called Slovácko (, older ''Moravské Slovensko'') is a cultural region in the southeastern part of the Czech Republic. It lies in the historical region of Moravia, on the border with Slovakia (the Slovak region of Záho ...

region of the Czech Republic, there is a community-run museum with an educational trail and a festival for this tree, with products like jam, juice and brandy made from its fruit. The sorb tree is cited in the

Babylonian Talmud The Talmud (; ) is the central text of Rabbinic Judaism and the primary source of Jewish religious law (''halakha'') and Jewish theology. Until the advent of modernity, in nearly all Jewish communities, the Talmud was the centerpiece of Jewi ...

in Ketubot 79a. The example refers in

Jewish Babylonian Aramaic Jewish Babylonian Aramaic (Aramaic: ) was the form of Middle Aramaic employed by writers in Lower Mesopotamia between the fourth and eleventh centuries. It is most commonly identified with the language of the Babylonian Talmud (which was comp ...

to a "thicket of ''zardəṯā''" (). This may be the origin of the English word 'sorb'. In

ancient Greece Ancient Greece () was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity (), that comprised a loose collection of culturally and linguistically r ...

, the fruit was cut in half and pickled, which in Plato's ''Symposium'' (190d7-8) has

Aristophanes Aristophanes (; ; ) was an Ancient Greece, Ancient Greek Ancient Greek comedy, comic playwright from Classical Athens, Athens. He wrote in total forty plays, of which eleven survive virtually complete today. The majority of his surviving play ...

use as a metaphor for the cutting in half of the original spherical humans by Zeus. Service tree wood was often used for manufacturing wooden planes of all types used for working wood, because servicetree wood is fairly dense and holds a profile well.

Etymology and other names

The English name comes from Middle English ''serves'', plural of ''serve'', from Old English ''syrfe'', borrowed from the Latin name ''sorbus''; it is unrelated to the verb ''serve''.

Oxford English Dictionary The ''Oxford English Dictionary'' (''OED'') is the principal historical dictionary of the English language, published by Oxford University Press (OUP), a University of Oxford publishing house. The dictionary, which published its first editio ...

Other English names include sorb, sorb tree, and whitty pear—" whitty" because the leaves are similar to

rowan The rowans ( or ) or mountain-ashes are shrubs or trees in the genus ''Sorbus'' of the rose family, Rosaceae. They are native throughout the cool temperate regions of the Northern Hemisphere, with the highest species diversity in the Himalaya ...

(i.e.

), and "pear" due to the shape of the fruit. The name ''sorb'', likewise, is from the Latin ''sorbus''; because of its fruit and has nothing to do with the Slavic ethnic groups known as the ''

Sorbs Sorbs (; ; ; ; ; also known as Lusatians, Lusatian Serbs and Wends) are a West Slavs, West Slavic ethnic group predominantly inhabiting the parts of Lusatia located in the German states of Germany, states of Saxony and Brandenburg. Sorbs tradi ...

'' and ''

Serbs The Serbs ( sr-Cyr, Срби, Srbi, ) are a South Slavs, South Slavic ethnic group native to Southeastern Europe who share a common Serbian Cultural heritage, ancestry, Culture of Serbia, culture, History of Serbia, history, and Serbian lan ...

''.

Ecology

Cultivation and uses

Etymology and other names

References

Further reading