Ulex

Ulex (commonly known as gorse, furze or whin) is a genus of flowering plants in the family Fabaceae. The genus comprises about 20 species of thorny evergreen shrubs in the subfamily Faboideae of the pea family Fabaceae. The species are native to parts of western Europe and northwest Africa, with the majority of species in Iberia.

"Furze" redirects here. For other uses, see Furze (disambiguation).

"Whin" redirects here. For Petty Whin, see Genista anglica. For the radio station, see WHIN.

Ulex
Ulex europaeus
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Tribe:	Genisteae [1]
Genus:	Ulex L.
Species
11–58; see text.
Synonyms
Nepa Webb

Gorse is closely related to the brooms, and like them, has green stems and very small leaves and is adapted to dry growing conditions. However it differs in its extreme thorniness, the shoots being modified into branched thorns 1–4 centimetres (0.4–1.6 in) long, which almost wholly replace the leaves as the plant's functioning photosynthetic organs. The leaves of young plants are trifoliate, but in mature plants they are reduced to scales or small spines.[2] All the species have yellow flowers, generally showy, some with a very long flowering season.

Species

The most widely familiar species is common gorse (Ulex europaeus), the only species native to much of western Europe, where it grows in sunny sites, usually on dry, sandy soils. It is also the largest species, reaching 2–3 metres (7–10 ft) in height; this compares with typically 20–40 centimetres (8–16 in) for western gorse (Ulex gallii). This latter species is characteristic of highly exposed Atlantic coastal heathland and montane habitats. In the eastern part of Great Britain, dwarf furze (Ulex minor) replaces western gorse. Ulex minor grows only about 30 centimetres (12 in) tall, a habit characteristic of sandy lowland heathland.

In full flower at Dalgarven Mill in Scotland.

Fruiting at Mallaig, Scotland

Common gorse flowers a little in late autumn and through the winter, coming into flower most strongly in spring. Western gorse and dwarf furze flower in late summer (August–September in Ireland and Great Britain). Between the different species, some gorse is almost always in flower, hence the old country phrase: "When gorse is out of blossom, kissing's out of fashion". Gorse flowers have a distinctive coconut scent, experienced very strongly by some individuals, but weakly by others.[3][4]

Species list

Ulex comprises the following species:[5][6][7]

• Ulex argenteus Webb
  • subsp. argenteus Webb
  • subsp. erinaceus (Webb) D.A.Webb
• Ulex borgiae Rivas Mart.
• Ulex breoganii (Castroviejo & Valdes-Bermejo) Castrovioejo & Valdes-Bermejo.
• Ulex cantabricus Alvarez & al.
• Ulex densus Webb
• Ulex europaeus L.—common gorse
• Ulex gallii Planch.—western gorse or western furze
• Ulex micranthus Lange
• Ulex minor Roth—dwarf furze or dwarf gorse
• Ulex parviflorus Pourr.
  • subsp. africanus (Webb) Greuter
  • subsp. eriocladus (C.Vicioso) D.A.Webb
  • subsp. funkii (Webb) Guinea
  • subsp. jussiaei (Webb) D.A.Webb
  • subsp. parviflorus Pourr.
• Ulex salzmanni (Webb) Willk.

Species names with uncertain taxonomic status

The status of the following species is unresolved:[7]

• Ulex airensis Esp.Santo et al.
• Ulex autumnalis Thore
• Ulex baicheri Rouy
• Ulex boivini Cosson ex Nyman
• Ulex boivini Webb
• Ulex bonnieri Hy
• Ulex bovini Welw. ex Webb
• Ulex bovini Willk.
• Ulex ceballosi Pau
• Ulex ceballosii (Vicioso) Pau
• Ulex congestus Pau
• Ulex ericetarum Pourr. ex Willk. & Lange
• Ulex ericetorum Pourr. ex Willk. & Lange
• Ulex eriophorus Gand.
• Ulex flahaulti Hy
• Ulex funkii Webb
• Ulex grandiflorus Pourr.
• Ulex hispanicus auct.
• Ulex hispanicus Pourr. ex Willk. & Lange
• Ulex ianthocladus Webb
• Ulex intermedius Le Gall
• Ulex lagrezii Rouy
• Ulex lanuginosus Pourr. ex Willk. & Lange
• Ulex latebracteatus (Mariz) Rivas Mart., T.E.Díaz & Fern.Prieto
• Ulex lucidus Willk.
• Ulex mauritii Sennen
• Ulex mauritii Sennen & Mauricio
• Ulex maximilianii Sennen & Mauricio
• Ulex megalorites Willk.
• Ulex microclada Sennen
• Ulex microclada Sennen & Mauricio
• Ulex mitis G.Don
• Ulex narcissi Sennen
• Ulex provincialis Le Gall
• Ulex provinicialis Loisel.
• Ulex revurvatus Willk.
• Ulex richteri Rouy
• Ulex rivasgodayanus (Cubas) Cabezudo & Pérez Lat.
• Ulex salzmannii Willk.
• Ulex sparsiflorus Lange
• Ulex spicatus Gand.
• Ulex subsericeus (Cout.) Rivas Mart., T.E.Díaz & Fern.Gonz.
• Ulex tazensis (Braun-Blanq. & Maire) Pau & Font Quer
• Ulex vicentinus (Daveau) Castro
• Ulex vidali Pau
• Ulex vidalii Pau
• Ulex willkommii Webb

Hybrids

The following hybrids have been described:[7]

• Ulex ×flahaultii Hy
• Ulex ×gonnetii Hy

Ecology

Gorse may grow as a fire-climax plant, well adapted to encourage and withstand fires, being highly flammable,[8] and having seed pods that are to a large extent opened by fire, thus allowing rapid regeneration after fire. The burnt stumps also readily sprout new growth from the roots. Where fire is excluded, gorse soon tends to be shaded out by taller-growing trees, unless other factors like exposure also apply. Typical fire recurrence periods in gorse stands are 5–20 years.

Gorse thrives in poor growing areas and conditions including drought;[9] it is sometimes found on very rocky soils,[10] where many species cannot thrive. Moreover, it is widely used for land reclamation (e.g., mine tailings), where its nitrogen-fixing capacity helps other plants establish better.

Gorse is a valuable plant for wildlife, providing dense thorny cover ideal for protecting bird nests. In Britain, France and Ireland, it is particularly noted for supporting Dartford warblers (Sylvia undata) and European stonechats (Saxicola rubicola); the common name of the whinchat (Saxicola rubetra) attests to its close association with gorse. The flowers are sometimes eaten by the caterpillars of the double-striped pug moth (Gymnoscelis rufifasciata), while those of the case-bearer moth Coleophora albicosta feed exclusively on gorse. The dry wood of dead gorse stems provides food for the caterpillars of the concealer moth Batia lambdella.

Invasive species

Ulex landscape around Corral Bay in Southern Chile

See also: Gorse in New Zealand and Biological control of gorse in New Zealand

In many areas of North America (notably California and Oregon), southern South America, Australia, New Zealand and Hawaii, the common gorse, introduced as an ornamental plant or hedge, has become an invasive species due to its aggressive seed dispersal; it has proved very difficult to eradicate and detrimental in native habitats. Common gorse is also an invasive species in the montane grasslands of Horton Plains National Park in Sri Lanka.[11]

Controlled burning of gorse in Devon, England

Management

Gorse readily becomes dominant in suitable conditions, and where this is undesirable for agricultural or ecological reasons control is required, either to remove gorse completely, or to limit its extent. Gorse stands are often managed by regular burning or flailing, allowing them to regrow from stumps or seed. Denser areas of gorse may be bulldozed.

A whin-stone at Dalgarven Mill, Scotland, used to crush whin for use as winter feed for cattle

Uses

Foods

Gorse flowers are edible and can be used in salads, tea and to make a non-grape-based fruit wine.

As fodder, gorse is high in protein[12] and may be used as feed for livestock, particularly in winter when other greenstuff is not available. Traditionally it was used as fodder for cattle, being made palatable either by "bruising" (crushing) with hand-held mallets, or grinding to a moss-like consistency with hand- or water-driven mills, or being finely chopped and mixed with straw chaff. Gorse is also eaten as forage by some livestock, such as feral ponies, which may eat little else in winter. Ponies may also eat the thinner stems of burnt gorse.

Fuel

Gorse bushes are highly flammable, and in many areas bundles of gorse were used to fire traditional bread ovens.[13]

In the island of Guernsey, Channel Islands, many traditional farms had furze brakes. The prolific gorse and bracken would be cut, dried and stored to be used as fuel, with farmhouses having purpose built furze ovens.[14][15]

Wood

Gorse wood has been used to make small objects; being non-toxic, it is especially suited for cutlery. In spite of its durability it is not used for construction because the plant is too small and the wood is unstable, being prone to warping. Gorse is useful for garden ornaments because it is resistant to weather and rot.

Common gorse flowers

Alternative medicine

Gorse has been listed as one of the 38 plants that are used to prepare Bach flower remedies,[16] a kind of alternative medicine.

Gorse-based symbols

The furze is the badge of the Sinclair and MacLennan clans of Scotland. Compare this with the broom (planta genista) as the emblem and basis of the name of the Plantagenet kings of England.

The flower, known as chorima in the Galician language, is considered the national flower of Galicia in northwest Spain.

The gorse is also the emblem of Brittany and is regaining popularity in Cornwall, particularly on St Piran's Day.

Dartmoor ponies sheltering behind furze

In popular culture

Its flammability rendered gorse symbolic as quickly flammable and quickly burning out; for example, Doyle, in his book Sir Nigel, has Sir John Chandos say: "... They flare up like a furzebush in the flames, but if for a short space you may abide the heat of it, then there is a chance that it may be cooler... If the Welsh be like the furze fire, then, pardieu! the Scotch are the peat, for they will smolder and you will never come to the end of them."[17]

In many parts of Britain, especially Devon and Cornwall where it is particularly prevalent on the moors, the expression "kissing's out of fashion when the gorse is out of blossom"[18] is a traditional jest as common gorse is thought to be always in bloom. Gorse, or rather furze as it was usually known in the West Country, sprigs were a traditional May Day gift between young lovers in the region, when in fact the blossom is at its peak.

References

1. Cardoso D, Pennington RT, de Queiroz LP, Boatwright JS, Van Wyk BE, Wojciechowski MF, Lavin M (2013). "Reconstructing the deep-branching relationships of the papilionoid legumes" (PDF). S Afr J Bot. 89: 58–75. doi:10.1016/j.sajb.2013.05.001.
2. AR Clapham, TG Tutin, EF Warburg, Flora of the British Isles, Cambridge, 1962, p. 331
3. "Gorse". Plantlife International. Retrieved 14 March 2011.
4. Moore, Charles (28 September 2009). "Richard Mabey, a writer dropping down to see the natural world". The Telegraph. Retrieved 14 March 2011.
5. "ILDIS LegumeWeb entry for Ulex". International Legume Database & Information Service. Cardiff School of Computer Science & Informatics. Retrieved 15 April 2014.
6. USDA; ARS; National Genetic Resources Program. "GRIN species records of Ulex". Germplasm Resources Information Network—(GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved 15 April 2014.
7. "The Plant List entry for Ulex". The Plant List. Royal Botanic Gardens, Kew and the Missouri Botanical Garden. 2013. Retrieved 15 April 2014.
8. Pausas; et al. (2011). "Fires enhance flammability in Ulex parviflorus" (PDF). New Phytologist. 193 (1): 18–23. doi:10.1111/j.1469-8137.2011.03945.x. PMID 22039968.
9. "Ulex europaeus Gorse, Common gorse PFAF Plant Database". pfaf.org.
10. C. Michael Hogan (2008) "Catto Long Barrow field notes", The Modern Antiquarian
11. Lalith Gunasekera, Invasive Plants: A guide to the identification of the most invasive plants of Sri Lanka, Colombo 2009, pp. 88–89.
12. Van Hoeffler; et al. (2007). "Suitability of Ulex fodder: a biochemical analysis with emphasis on nutritional content". European Journal of Agricultural Science. 20 (13): 89–102.
13. "Experimental Archaeology Site at Tunstall". Suffolk County Council. We have tried different woods as fuel to see which is most efficient and our favourite is dead gorse, collected locally and a dominant species on the sandy soils in this area. Analysis of woods used in the Roman salt industry that took place on the estuary a mile away shows they were using the same fuel.
14. "Out in the fields of gold". Guernsey press. 19 April 2012.
15. "Les Prevosts farm". guernseygoasdoue. 2015-01-24.
16. DS Vohra (1 June 2004). Bach Flower Remedies: A Comprehensive Study. B. Jain Publishers. p. 3. ISBN 978-81-7021-271-3. Retrieved 2 September 2013.
17. Doyle, Sir Arthur Conan (1906). Sir Nigel. London: Smith, Elder & Co.
18. "Kissing's in fashion …". plant-lore.com. 31 December 2014.

External links

• Chisholm, Hugh, ed. (1911). "Furze" . Encyclopædia Britannica (11th ed.). Cambridge University Press.
• 'A Modern Herbal' (Grieves 1931)