Rubus chamaemorus

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Rubus chamaemorus
Rubus chamaemorus, from Tromso, August 2020.jpeg
Ripe cloudberry
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Genus: Rubus
Subgenus: Rubus subg. Chamaemorus
Species:
R. chamaemorus
Binomial name
Rubus chamaemorus
L. 1753 not Fisch. ex Ser. 1825
Cloudberry distrib.png
Distribution of Rubus chamaemorus
Synonyms
Synonymy
  • Chamaemorus anglicaClus. ex Greene
  • Chamaemorus anglicusGreene
  • Chamaemorus chamaemorus(L.) House
  • Chamaemorus norvegicusGreene
  • Chamaemorus norwegicaClus. ex Greene
  • Rubus chamaemorus var. pseudochamaemorus(Tolm.) Hulten
  • Rubus nubisGray
  • Rubus pseudochamaemorusTolm.
  • Rubus yessoicusKuntze

Rubus chamaemorus is a species of flowering plant in the rose family Rosaceae, native to cool temperate regions, alpine and Arctic tundra and boreal forest. [2] This herbaceous perennial produces amber-colored edible fruit similar to the blackberry. English common names include cloudberry, [3] Nordic berry, bakeapple (in Newfoundland and Labrador), knotberry and knoutberry (in England), aqpik or low-bush salmonberry (in Alaska – not to be confused with salmonberry, Rubus spectabilis ), [4] and averin or evron (in Scotland). [5] [6]

Contents

Description

Unlike most Rubus species, the cloudberry is dioecious, and fruit production by a female plant requires pollination from a male plant. [2]

The cloudberry grows to 10–25 centimetres (4–10 in) high. [2] The leaves alternate between having 5 and 7 soft, handlike lobes on straight, branchless stalks. After pollination, the white (sometimes reddish-tipped) flowers form raspberry-sized aggregate fruits which are more plentiful in wooded rather than sun-exposed habitats. [2] Consisting of between 5 and 25 drupelets, each fruit is initially pale red, ripening into an amber color in early autumn.

Chemistry

Cloudberries are rich in vitamin C and ellagic acid, [2] citric acid, malic acid, α-tocopherol , anthocyanins and the provitamin A carotenoid, β-carotene in contents which differ across regions of Finland due to sunlight exposure, rainfall or temperature. [7] The ellagitannins lambertianin C and sanguiin H-6 are also present. [8] Genotype of cloudberry variants may also affect polyphenol composition, particularly for ellagitannins, sanguiin H-6, anthocyanins and quercetin. [9]

Distribution and habitat

Cloudberry distribution in the US Rubus chamaemorus in the USA.svg
Cloudberry distribution in the US

Cloudberries are a circumpolar boreal plant, occurring naturally throughout the Northern Hemisphere from 78°N, south to about 55°N, and are scattered south to 44°N mainly in mountainous areas and moorlands. [2] In Europe, they grow in the Nordic countries but are rare in the Baltic states (Estonia, Latvia and Lithuania) and Poland. [2] They are present in the English Pennines and the Scottish Highlands, while a single, fragile site exists in the Sperrin Mountains of Northern Ireland. [11] They occur across northern Russia east towards the Pacific Ocean as far south as Japan in the island of Hokkaido. [2]

In North America, cloudberries grow wild across Greenland, most of northern Canada, Alaska, northern Minnesota, New Hampshire, Maine, and New York. [2] [12]

Wide distribution occurs due to the excretion of the indigestible seeds by birds and mammals. Further distribution arises through its rhizomes, which are up to 10 metres (33 ft) long and grow about 10–15 cm (4–6 in) below the soil surface, developing extensive and dense berry patches. [2] Cuttings of these taken in May or August are successful in producing a genetic clone of the parent plant. [13] The cloudberry grows in bogs, marshes, wet meadows, tundra and elevations of 1,400 m (4,600 ft) above sea level in Norway, requiring acidic ground (between 3.5 and 5 pH). [2]

Ecology

Cloudberry leaves are food for caterpillars of several Lepidoptera species. The moth Coleophora thulea has no other known food plants.[ citation needed ]

Conservation

Due to peatland drainage and peat exploitation, they are considered endangered [2] and are under legal protection in Germany's Weser and Elbe valleys.[ citation needed ]

Cultivation

Despite great demand as a delicacy (particularly in Sweden, Norway and Finland) the cloudberry is not widely cultivated and is primarily a wild plant. Wholesale prices vary widely based on the size of the yearly harvest, but cloudberries have gone for as little as €10/kg (in 2004). [14]

Since the middle of the 1990s, however, the species has formed part of a multinational research project. Beginning in 2002, selected cultivars have been available to farmers, notably 'Apolto' (male), 'Fjellgull' (female) and 'Fjordgull' (female).[ citation needed ] Finnish self-pollinated 'Nyby' variety is monoecious, i.e. the female and male flowers are located in the same plant unit. [15] The cloudberry can be cultivated in Arctic areas where few other crops are possible, for example along the northern coast of Norway.[ citation needed ]

Uses

Cloudberry jam Homemade cloudberry jam.jpg
Cloudberry jam
Bread cheese with cloudberry jam Leipajuusto cheese with cloudberry jam.jpg
Bread cheese with cloudberry jam

When ripe, cloudberry fruits are golden-yellow, soft and juicy, and are rich in vitamin C. [2] When eaten fresh, cloudberries have a distinctive tart taste. When over-ripe, they have a creamy texture somewhat like yogurt and a sweet flavor. [16] They are often made into jams, juices, tarts, and liqueurs. In Finland, the berries are eaten with heated leipäjuusto (a local cheese; the name translates to "bread-cheese"), as well as cream and sugar. In Sweden, cloudberries (hjortron, also known in northern Sweden as snattren) [17] and cloudberry jam are used as a topping for ice cream, pancakes, and waffles. Cloudberry filmjölk (soured milk) is available in supermarkets.

In Norway, they are often mixed with whipped cream and sugar to be served as a dessert called multekrem (cloudberry cream), as a jam or as an ingredient in homemade ice cream. Cloudberry yoghurt—molte- or multeyoughurt—is a supermarket item in Norway. [18]

In Newfoundland and Labrador, Canada, cloudberries are used to make "bakeapple pie" or jam. Arctic Yup'ik mix the berries with seal oil, reindeer or caribou fat (which is diced and made fluffy with seal oil) and sugar to make "Eskimo ice cream" or akutaq. [2] The recipes vary by region. Along the Yukon and Kuskokwim River areas, white fish (pike) along with shortening and sugar are used. The berries are an important traditional food resource for the Yup'ik.

Due to its high vitamin C content, [2] the berry is valued both by Nordic seafarers and Northern indigenous peoples. Its polyphenol content, including flavonoid compounds such as ellagic acid, appears to naturally preserve food preparations of the berries. [2] Cloudberries can be preserved in their own juice without added sugar, if stored cool. [19]

Extract of cloudberries is also used in cosmetics such as shower gels, hand creams and body lotions.

Alcoholic drinks

In Nordic countries, traditional liqueurs such as lakkalikööri (Finland) are made of cloudberry, [20] having a strong taste and high sugar content. Cloudberry is used as a flavouring for making akvavit. In northeastern Quebec, a cloudberry liqueur known as chicoutai (Innu-aimun name) is made. [21]

Polyphenol extracts from cloudberries have improved storage properties when microencapsulated using maltodextrin DE5-8. [22] At least 14 volatile compounds, including vanillin, account for the aroma of cloudberries. [23]

Harvesting on public property

In some northern European countries such as Norway, a common use policy on non-wood forest products allows anyone to pick cloudberries on public property and eat them on location, but only local residents may transport them from that location. [24] [25] [26] Transporting ripe cloudberries from the harvest location is permitted in many counties. [24]

It was illegal to harvest unripe cloudberries in Norway between 1970 and 2004. [27] [28] Many people believe that it is still illegal to harvest unripe cloudberries in Norway, but that law is no longer in effect. [28]

Coat of arms of Muurame Muurame.vaakuna.svg
Coat of arms of Muurame

In culture

The cloudberry appears on the Finnish version of the 2 euro coin. [29] The name of the hill Beinn nan Oighreag in Breadalbane in the Scottish Highlands means "Hill of the Cloudberries" in Scottish Gaelic. [30] Transactions of Camden's Britain (1637 edition) indicates the etymological origins of 'cloud-berry', the plant's name in old Lancashire dialect: 'Pendelhill [in Lancashire] advenceth itselfe up the skie ... and in the very top thereof bringeth forth a peculiar plant which, as though it came out of the clowdes, they tearme clowdes-berry'. [31] In Norrland cloudberries are known as Norrland's gold. [32]

One of the gnomes in The Little Grey Men , a 1942 children's book by "BB" (Denys Watkins-Pitchford), and its sequel is named Cloudberry.

Related Research Articles

<span class="mw-page-title-main">Berry</span> In the culinary sense, small edible fruit

A berry is a small, pulpy, and often edible fruit. Typically, berries are juicy, rounded, brightly colored, sweet, sour or tart, and do not have a stone or pit, although many pips or seeds may be present. Common examples of berries in the culinary sense are strawberries, raspberries, blueberries, blackberries, white currants, blackcurrants, and redcurrants. In Britain, soft fruit is a horticultural term for such fruits.

<span class="mw-page-title-main">Blackberry</span> Fruit of Rubus species

The blackberry is an edible fruit produced by many species in the genus Rubus in the family Rosaceae, hybrids among these species within the subgenus Rubus, and hybrids between the subgenera Rubus and Idaeobatus. The taxonomy of blackberries has historically been confused because of hybridization and apomixis, so that species have often been grouped together and called species aggregates.

<i>Vaccinium vitis-idaea</i> Species of shrub with edible fruit

Vaccinium vitis-idaea is a small evergreen shrub in the heath family Ericaceae, known colloquially as the lingonberry, partridgeberry, foxberry, mountain cranberry, or cowberry. It is native to boreal forest and Arctic tundra throughout the Northern Hemisphere, including Eurasia and North America. Commercially cultivated in the United States Pacific Northwest and the Netherlands, the edible berries are also picked in the wild and used in various dishes, especially in Nordic cuisine.

<span class="mw-page-title-main">Dewberry</span> Type of black berry

The dewberries are a group of species in the genus Rubus, section Rubus, closely related to the blackberries. They are small trailing brambles with aggregate fruits, reminiscent of the raspberry, but are usually purple to black instead of red.

<span class="mw-page-title-main">Bilberry</span> Species of shrub with edible berries

Bilberries or blueberries are Eurasian low-growing shrubs in the genus Vaccinium in the flowering plant family Ericaceae that bear edible, dark blue berries. The species most often referred to is Vaccinium myrtillus L., but there are several other closely related species.

<span class="mw-page-title-main">Finnish cuisine</span> Culinary tradition

Finnish cuisine is notable for generally combining traditional country fare and haute cuisine with contemporary continental-style cooking. Fish and meat play a prominent role in traditional Finnish dishes in some parts of the country, while the dishes elsewhere have traditionally included various vegetables and mushrooms. Evacuees from Karelia contributed to foods in other parts of Finland in the aftermath of the Continuation War.

<span class="mw-page-title-main">Raspberry</span> Edible fruit

The raspberry is the edible fruit of several plant species in the genus Rubus of the rose family, most of which are in the subgenus Idaeobatus. The name also applies to these plants themselves. Raspberries are perennial with woody stems.

<i>Rubus idaeus</i> Red raspberry

Rubus idaeus is a red-fruited species of Rubus native to Europe and northern Asia and commonly cultivated in other temperate regions.

<i>Rubus occidentalis</i> Berry and plant

Rubus occidentalis is a species of Rubus native to eastern North America. Its common name black raspberry is shared with other closely related species. Other names occasionally used include bear's eye blackberry, black cap, black cap raspberry, and scotch cap.

<i>Rubus arcticus</i> Berry and plant

Rubus arcticus, the Arctic bramble or Arctic raspberry, Nagoonberry, or nectarberry is a species of slow-growing bramble belonging to the rose family, found in Arctic and alpine regions in the Northern Hemisphere. It has been used to create hybrid cultivated raspberries, the so-called nectar raspberries.

<span class="mw-page-title-main">Phenolic content in wine</span> Wine chemistry

Phenolic compounds—natural phenol and polyphenols—occur naturally in wine. These include a large group of several hundred chemical compounds that affect the taste, color and mouthfeel of wine. These compounds include phenolic acids, stilbenoids, flavonols, dihydroflavonols, anthocyanins, flavanol monomers (catechins) and flavanol polymers (proanthocyanidins). This large group of natural phenols can be broadly separated into two categories, flavonoids and non-flavonoids. Flavonoids include the anthocyanins and tannins which contribute to the color and mouthfeel of the wine. The non-flavonoids include the stilbenoids such as resveratrol and phenolic acids such as benzoic, caffeic and cinnamic acids.

<i>Rubus coreanus</i> Species of raspberry

Rubus coreanus, known as bokbunja, Korean blackberry, or Korean bramble, is a species of raspberry native to Korea, Japan, and China. It produces edible berries that can be fermented into bokbunja ju, a Korean fruit wine. R. coreanus fruits are usually harvested between the May and July at peak harvest season. They can only be cultivated in a few areas in Korea, different to Rubus occidentalis, which can be cultivated widely across the country.

<span class="mw-page-title-main">Ellagitannin</span> Diverse class of hydrolyzable tannins, a type of polyphenol

The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-pentagalloyl glucose. Ellagitannins differ from gallotannins, in that their galloyl groups are linked through C-C bonds, whereas the galloyl groups in gallotannins are linked by depside bonds.

<span class="mw-page-title-main">Lambertianin C</span> Chemical compound

Lambertianin C is an ellagitannin.

<span class="mw-page-title-main">Sanguiin H-6</span> Chemical compound

Sanguiin H-6 is an ellagitannin.

<i>Vaccinium oxycoccos</i> Species of flowering plant

Vaccinium oxycoccos is a species of flowering plant in the heath family. It is known as small cranberry, marshberry, bog cranberry, swamp cranberry, or, particularly in Britain, just cranberry. It is widespread throughout the cool temperate northern hemisphere, including northern Europe, northern Asia and northern North America.

<span class="mw-page-title-main">Sanguisorbic acid</span> Chemical compound

Sanguisorbic acid is a constituent of some ellagitannins. It is constituted by a hexahydroxydiphenic acid unit linked by an O-C bond to a gallic acid. The differences with its isomers, valoneic acid and nonahydroxytriphenic acid, are that the hydroxyl that links the hexahydroxydiphenoyl (HHDP) group to the galloyl group belongs to the galloyl group in valoneic acid, while in nonahydroxytriphenic acid, the hexahydroxydiphenic acid unit is linked by a C-C bond to gallic acid.

<span class="mw-page-title-main">Urolithin A</span> Chemical compound

Urolithin A is a metabolite compound resulting from the transformation of ellagitannins by the gut bacteria. It belongs to the class of organic compounds known as benzo-coumarins or dibenzo-α-pyrones. Its precursors – ellagic acids and ellagitannins – are ubiquitous in nature, including edible plants, such as pomegranates, strawberries, raspberries, walnuts, and others.

References

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  10. "Cloudberry". Sierra Club BC. 15 December 2016. Retrieved 23 October 2022. Cloudberry is a relative of the raspberry. It has toothed leaves, white flowers in June-July and yellow-orange berries that ripen in August-September...You can find cloudberries in Canada, Scandinavia, Greenland, Russia and the US.
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  18. "TINE Yoghurt Molte". TINE.no. Archived from the original on 2016-08-09. Retrieved 2015-08-15.
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Further reading