Summer lady's-tresses (Spiranthes aestivalis)
Facts – Summer lady's-tresses
| Kingdom | Plantae |
|---|---|
| Phylum | Anthophyta |
| Class | Liliopsida |
| Order | Orchidales |
| Family | Orchidaceae |
| Genus | Spiranthes (1) |
| Size | Height: 12-30 cm (2) |
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Learn about the scientific name of this species and how it fits into the tree of life at Nature Navigator. |
Status – Summer lady's-tresses
Description – Summer lady's-tresses
Range – Summer lady's-tresses
This orchid was first discovered in 1840, and has always been rare in Britain, only ever having been recorded from two small areas in the New Forest (5). 200 plants were found at one site in 1900, but the population had fallen to just 20 by the start of the 1930s (5). It is thought to have become extinct by 1959 (6), and no records have been made since (5). It occurs in western, southern and central Europe, reaching east to Turkey and Russia, and is also found in North Africa (2).
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You can view distribution information for this species at the National Biodiversity Network Gateway. |
Habitat – Summer lady's-tresses
Biology – Summer lady's-tresses
The flowers, which are produced between mid-July and mid-August, are said to produce scent during the evening; it is believed that they are pollinated by moths, although this has not been proven (5).
Threats – Summer lady's-tresses
Drainage of the wet, boggy habitats favoured by this orchid is likely to have played a part in its decline. Plants were also dug up for private collections, and this certainly reduced the British population (5).
Conservation – Summer lady's-tresses
The listing of this orchid under the Species and Habitats Directive means that sites supporting this species can be protected. English Nature has included summer lady's-tresses in its Species Recovery Programme; should this orchid be rediscovered in Britain, conservation action will get underway.
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There may be further information about this species available via the National Biodiversity Network Gateway. |
Find out more – Summer lady's-tresses
For more on English Nature's Species Recovery Programme see:
http://www.english-nature.org.uk/science/srp/default.asp
Authentication
Information authenticated by Plantlife, the wild plant conservation charity:
http://www.plantlife.org.uk
References
- National Biodiversity Network Species Dictionary (September 2002) http://www.nhm.ac.uk/nbn/
- Williams, J. G., Williams, A. E. and Arlott, N. (1978) A field guide to the orchids of Britain and Europe with north Africa and the Middle East. Collins, London.
- English Nature. Species Recovery Programme. (September 2002): http://www.english-nature.org.uk/science/srp/srp2.htm
- JNCC (September 2002): http://www.jncc.gov.uk/species/pstatus/p6_3.htm
- Lang, D. (1980) Orchids of Britain. Oxford University Press, Oxford.
- Byfield, A. (2003) Plantlife. Pers. comm.
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