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In Britain, it was formerly a reasonably widespread plant across northern England, particularly the limestone area of the [[Yorkshire Dales]].<ref>Endangered Plants, Jan Čeřovský (1995) {{ISBN|1-85778-101-5}}</ref> By the late 20th century it had declined to just a single plant in one location in the dales. While the virtual extinction of the lady's-slipper orchid from its historical range in Britain is often blamed on uprooting by gardeners and botanists, it is also the case that its preferred habitat shrank markedly with human clearance of woodland from the limestone landscape, and the grazing of sheep will have finished it off.<ref>Britain’s Rare Flowers, Peter Marren (1999) {{ISBN|0-85661-114-X}}</ref> It became a protected species in the UK in 1975 under the Conservation of Wild Creatures and Wild Plants Act,<ref>http://www.caithness.org/caithnessfieldclub/bulletins/1975/october/conservation.htm</ref> but a reintroduction programme for the lady's-slipper orchid is in place,<ref>[http://www.yorkshiredales.org.uk/lady_s_slipper_cypripedium_calceolus_sap-3.pdf Lady’s-Slipper Orchid ''Cypripedium calceolus'' Species Action Plan Yorkshire Dales National Park Authority] {{webarchive|url=https://web.archive.org/web/20101223120919/http://yorkshiredales.org.uk/lady_s_slipper_cypripedium_calceolus_sap-3.pdf |date=2010-12-23 }}</ref><ref>{{Cite web |url=http://www.britainsorchids.fieldguide.co.uk/?P=conservation&SHC=1&PSD=1&PHPSESSID=a80ec989c5e979c07080da7970ac2905~lady%E2%80%99s-slipper |title=Re-Introduction Project - Lady's-Slipper, Conservation in action, Britain's Orchids, A guide to the identification and ecology of the wild orchids of Britain and Ireland, David Lang and Natural England |access-date=2019-11-18 |archive-url=https://web.archive.org/web/20160304030649/http://www.britainsorchids.fieldguide.co.uk/?P=conservation&SHC=1&PSD=1&PHPSESSID=a80ec989c5e979c07080da7970ac2905~lady%E2%80%99s-slipper |archive-date=2016-03-04 |url-status=dead }}</ref> and has led to a population of hundreds of plants as of 2003.<ref>{{cite web | url = http://www.kew.org/herbarium/orchid/orn42.html | title = Orchid Research Newsletter No. 42 | author = Phillip Cribb | date = July 2003 | access-date = 2008-01-01 | archive-url = https://web.archive.org/web/20080507030219/http://www.kew.org/herbarium/orchid/orn42.html | archive-date = 2008-05-07 | url-status = dead }}</ref>
In Britain, it was formerly a reasonably widespread plant across northern England, particularly the limestone area of the [[Yorkshire Dales]].<ref>Endangered Plants, Jan Čeřovský (1995) {{ISBN|1-85778-101-5}}</ref> By the late 20th century it had declined to just a single plant in one location in the dales. While the virtual extinction of the lady's-slipper orchid from its historical range in Britain is often blamed on uprooting by gardeners and botanists, it is also the case that its preferred habitat shrank markedly with human clearance of woodland from the limestone landscape, and the grazing of sheep will have finished it off.<ref>Britain’s Rare Flowers, Peter Marren (1999) {{ISBN|0-85661-114-X}}</ref> It became a protected species in the UK in 1975 under the Conservation of Wild Creatures and Wild Plants Act,<ref>http://www.caithness.org/caithnessfieldclub/bulletins/1975/october/conservation.htm</ref> but a reintroduction programme for the lady's-slipper orchid is in place,<ref>[http://www.yorkshiredales.org.uk/lady_s_slipper_cypripedium_calceolus_sap-3.pdf Lady’s-Slipper Orchid ''Cypripedium calceolus'' Species Action Plan Yorkshire Dales National Park Authority] {{webarchive|url=https://web.archive.org/web/20101223120919/http://yorkshiredales.org.uk/lady_s_slipper_cypripedium_calceolus_sap-3.pdf |date=2010-12-23 }}</ref><ref>{{Cite web |url=http://www.britainsorchids.fieldguide.co.uk/?P=conservation&SHC=1&PSD=1&PHPSESSID=a80ec989c5e979c07080da7970ac2905~lady%E2%80%99s-slipper |title=Re-Introduction Project - Lady's-Slipper, Conservation in action, Britain's Orchids, A guide to the identification and ecology of the wild orchids of Britain and Ireland, David Lang and Natural England |access-date=2019-11-18 |archive-url=https://web.archive.org/web/20160304030649/http://www.britainsorchids.fieldguide.co.uk/?P=conservation&SHC=1&PSD=1&PHPSESSID=a80ec989c5e979c07080da7970ac2905~lady%E2%80%99s-slipper |archive-date=2016-03-04 |url-status=dead }}</ref> and has led to a population of hundreds of plants as of 2003.<ref>{{cite web | url = http://www.kew.org/herbarium/orchid/orn42.html | title = Orchid Research Newsletter No. 42 | author = Phillip Cribb | date = July 2003 | access-date = 2008-01-01 | archive-url = https://web.archive.org/web/20080507030219/http://www.kew.org/herbarium/orchid/orn42.html | archive-date = 2008-05-07 | url-status = dead }}</ref>


With the help of Dutch plant breeder and wholesaler Anthura, who made the Genus and this species commercially available in garden centers, this species is successfully reintroduced in several locations in Switzerland at the request of the Swiss Orchid Foundation. Seeds from the Swiss population were used by Anthura resulting in three thousand viable plants available for the reintroduction. The locations are kept secret, but are monitored regularly.[http://anthura-unlimited.anthura.nl/anthurinfo-2019-june/cypripedium-calceolus/]
⚫
A laboratory in Belgium has developed a technique to mass-produce ''C. calceolus'', so plants are commercially available, unlike many orchid species.<ref>[http://www.phytesia.com/en/ Phytesia]</ref>

⚫
Other laboratories and breeders have also developed the technique to mass-produce ''C. calceolus'', so plants are commercially available, unlike many orchid species.<ref>[http://www.phytesia.com/en/ Phytesia]</ref>


==In popular culture==
==In popular culture==

Revision as of 05:25, 18 April 2021

Cypripedium calceolus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Cypripedioideae
Genus: Cypripedium
Species:
C. calceolus
Binomial name
Cypripedium calceolus
Synonyms[1]
  • Cypripedium boreale Salisb. (1796)
  • Cypripedium ferrugineum Gray (1821)
  • Cypripedium atsmori C. Morren (1851)
  • Cypripedium cruciatum Dulac (1867)
  • Cypripedium alternifolium St.-Lag. (1880)
  • Cypripedium microsaccos Kraenzl. (1913)
  • Calceolus marianus Crantz
  • Calceolus alternifolius St.-Lag.
  • Cypripedium guttatum subsp. microsaccos (Kraenzl.) Soó

Cypripedium calceolus is a lady's-slipper orchid, and the type species of the genus Cypripedium. It is native to Europe and Asia.

Taxonomy

Cypripedium comes from the Greek Κυπρισ πεδιον (Kupris pedion), meaning Venus' foot (a reference to the Roman goddess Venus).[2] calceolus is Latin for a small shoe.[3]

Cypripedium calceolus sensu stricto ("in the strict sense") does not occur in North America. The closely related Cypripedium parviflorum and C. pubescens are often still referred to as subspecies or varieties of C. calceolus.

Description

This is the largest orchid species in Europe, growing to 60 cm tall[4] with flowers as wide as 9 cm.[5] Before it flowers, it is distinguished from other orchids by the large size and width of its ovate leaves (as big as 18 cm long, 9 cm wide),[4] which like other orchids exhibit parallel venation. Each shoot has up to four leaves and a small number (1-2) of flowers, which have long often twisted petals varying from red-brown to black (rarely green) and a slipper-shaped yellow labellum, within which red dots are visible.[4] It is a long-lived perennial[4] and spreads using horizontal stems (rhizomes).[4]

Cypripedium calceolus can be confused, when not flowering, with Allium ursinum, Convallaria majalis or several species of Epipactis orchid. It closely resembles other species of Cypripedium orchid native to the United States (see taxonomy, below).

Chromosome number has been given as 2n=20 but also 2n=22[6]

Distribution and habitat

It has a widespread distribution from Europe east through Asia from Spain to the Pacific, including almost every country in Europe plus Russia (European Russia, Siberia, and the Russian Far East), northeastern China (Heilongjiang, Jilin, Liaoning, Nei Mongol), Mongolia, Korea and Rebun Island in Japan.[1][7][8]

It is typically found in open woodland on moist calcareous soils. In continental Europe it is also found growing in the decomposed humus of semi-shaded woodland cover on limestone. It has declined over much of the European part of its range, and as a result is legally protected in a number of countries. Its upper elevation limit is 2100m.[9] According to growing instructions provided by Phytesia, it cannot survive waterlogging or direct midday sun.

Inflorescence of C. calceolus

Ecology

Cypripedium calceolus is frequently associated with stands of hazel trees.[10]

It is pollinated by a number of different insect species, including at least seven species of miner bee in the genera Andrena and Colletes, as well as at least two species of Lasioglossum (furrow bees).[10] Plants are very vulnerable to herbivory by slugs and snails.

Cypripedium calceolus is known to primarily associate with mycorrhizal fungi in the genus Tulasnellaceae.[11][12] Specific relationships with mycorrhizal fungi are key to orchids' ability to access soil nutrients. Other suggested mycorrhizal partners include Alternaria sp., Ceratorhiza sp., Chaetomium sp., Cylindrocarpon sp., Epicoccum purpureum, Epulorhiza sp., Moniliopsis sp., Mycelium radicis atrovirens, Phoma sp. and Rhizoctonia subtilis sp.[13]

Conservation

Although the global conservation status of Cypripedium calceolus is least concern according to the IUCN Red List,[9] in many countries (including the UK and Denmark) it has become rare and is afforded legal protection. C. calceolus is common in Poland and Austria but in Greece it has become extinct.[4]

In Britain, it was formerly a reasonably widespread plant across northern England, particularly the limestone area of the Yorkshire Dales.[14] By the late 20th century it had declined to just a single plant in one location in the dales. While the virtual extinction of the lady's-slipper orchid from its historical range in Britain is often blamed on uprooting by gardeners and botanists, it is also the case that its preferred habitat shrank markedly with human clearance of woodland from the limestone landscape, and the grazing of sheep will have finished it off.[15] It became a protected species in the UK in 1975 under the Conservation of Wild Creatures and Wild Plants Act,[16] but a reintroduction programme for the lady's-slipper orchid is in place,[17][18] and has led to a population of hundreds of plants as of 2003.[19]

With the help of Dutch plant breeder and wholesaler Anthura, who made the Genus and this species commercially available in garden centers, this species is successfully reintroduced in several locations in Switzerland at the request of the Swiss Orchid Foundation. Seeds from the Swiss population were used by Anthura resulting in three thousand viable plants available for the reintroduction. The locations are kept secret, but are monitored regularly.[1]

Other laboratories and breeders have also developed the technique to mass-produce C. calceolus, so plants are commercially available, unlike many orchid species.[20]

Cypripedium calceolus has appeared on postage stamps in a huge number of countries including Austria, the Czech Republic, Denmark, France, Grenadines, Hungary, Italy, Latvia, Madagascar, Moldova, Mozambique, Norway, Romania, Russia, Slovenia, Sweden, Uganda, Ukraine and the United Kingdom.[21]

The Norwegian municipality of Snåsa has a Cypripedium calceolus in its coat-of-arms.

In Pavel Ivanovich Melnikov's "In the Forests", a znakharka (Russian wise woman) calls this Adam's head, Adam's grass, and Cuckoo's slippers and says it is good for every ill including driving away evil spirits.

Lady's-slipper orchid, Cypripedium calceolus, from northern Sweden.

References

  1. ^ a b Kew World Checklist of Selected Plant Families
  2. ^ University of Quebec and Montreal - Flora etc.
  3. ^ The Plant World - Origin of Plant Names
  4. ^ a b c d e f Kew Science - Cypripedium calceolus
  5. ^ Nature Gate - Ladys Slipper
  6. ^ Journal of Ecology - Cypripedium calceolus
  7. ^ Altervista Flora Italiana, Yellow Lady's Slipper, Cypripedium calceolus
  8. ^ Flora of China, v 25 p 杓兰 shao lan, Cypripedium calceolus
  9. ^ a b IUCN Red List - Cypripedium calceolus
  10. ^ a b Nordic Journal of Botany - Pollination of the Lady’s slipper orchid (Cypripedium calceolus) in Scandinavia
  11. ^ Molecular Ecology - High specificity generally characterizes mycorrhizal association in rare lady’s slipper orchids, genus Cypripedium
  12. ^ Biogeography of Mycorrhizal Symbiosis
  13. ^ Orchid Biology - Reviews and Perspectives
  14. ^ Endangered Plants, Jan Čeřovský (1995) ISBN 1-85778-101-5
  15. ^ Britain’s Rare Flowers, Peter Marren (1999) ISBN 0-85661-114-X
  16. ^ http://www.caithness.org/caithnessfieldclub/bulletins/1975/october/conservation.htm
  17. ^ Lady’s-Slipper Orchid Cypripedium calceolus Species Action Plan Yorkshire Dales National Park Authority Archived 2010-12-23 at the Wayback Machine
  18. ^ "Re-Introduction Project - Lady's-Slipper, Conservation in action, Britain's Orchids, A guide to the identification and ecology of the wild orchids of Britain and Ireland, David Lang and Natural England". Archived from the original on 2016-03-04. Retrieved 2019-11-18.
  19. ^ Phillip Cribb (July 2003). "Orchid Research Newsletter No. 42". Archived from the original on 2008-05-07. Retrieved 2008-01-01.
  20. ^ Phytesia
  21. ^ Google Images

Media related to Cypripedium calceolus at Wikimedia Commons

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