Spiranthes romanzoffiana

Spiranthes romanzoffiana
Spiranthes romanzoffiana
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Cranichideae
Subtribe: Spiranthinae
Genus: Spiranthes
Species: S. romanzoffiana
Binomial name
Spiranthes romanzoffiana
Synonyms

Spiranthes romanzoffiana, commonly known as Irish Lady's-tresses[1] or hooded lady's tresses,[2] is a species of orchid. Collected by Chamisso during the Romanzov expedition it was described by him in 1828 and named for Count Nikolay Rumyantsev who financed it.

This orchid is native to North America, Ireland and the British Isles.[3] (Codes) [4]

Description

Small herb with leafy stems, leaves lanceolate and flowers arranges in spirally twister rows. Each flower in a dense spike, the sepals and petals are united forming a lip of a tube. The labellum, or lower petal, of the flower is white with green veins.[5]

Distribution

Known only from Scotland, England and North America. The first Irish record was made in 1810.[6]

Habitat

Lake shores and damp pastures.[5]

References

  1. ↑ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
  2. ↑ "Spiranthes romanzoffiana". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 27 November 2015.
  3. ↑ "World Checklist of Selected Plant Families".
  4. ↑ "World Checklist of Selected Plant Families TDWG Geocodes" (PDF).
  5. 1 2 Parnell, J. and Curtis, T. 2012. Webb's An Irish Flora. Cork University Press. ISBN 978-185918-4783
  6. ↑ Hackney,P. Ed. 1992. Stewart & Corry's Flora of the North-east of Ireland. Third edition. Institute of Irish Studies, The Queen's University of Belfast ISBN 0-85389-446-9
  • Correll, D.S., Native Orchids of North America, p. 220. 1978.

Further references

  • Horsman, F. 2013. The discovery and subsequent history of Spiranthes romanzoffiana Chamisso (Orchidaceae) at Castletown Bearhaven in West Cork (H3) Irish Naturalists' Journal 32 19 - 25.

Media related to Spiranthes romanzoffiana at Wikimedia Commons

Spiranthes romanzoffiana. a, base of plant, showing linear leaves and fleshy roots, x %; b, spike, x 1%; c, single whorl of flowers; x I'f,; d, flower, lateral view, X 4; e, flower (longitudinal section), x 4; f, back of column, showing anther, x 6; g, front of column, showing stigma, x 6; h, lower lip, x 6. Original plate


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