Athyrium flexile

Quality 0.50 · 1 view · Updated 2 months ago

Species of fern

title: "Athyrium flexile" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["athyrium", "endemic-flora-of-scotland", "highlands-and-islands-of-scotland"] description: "Species of fern" topic_path: "geography/united-kingdom" source: "https://en.wikipedia.org/wiki/Athyrium_flexile" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Species of fern ::

| name = Newman's lady-fern | image = | genus = Athyrium | species = flexile | authority = Tausch ex Opiz

Athyrium flexile, commonly known as Newman's lady-fern or the flexile lady fern, is a taxon of fern which is endemic to Scotland. It has been regarded as a species, but it is considered to be an ecotype of the Alpine lady fern. This fern is pale to yellow green in colour and has elliptic, double pinnate leaves which are deciduous. This ecotype grows more quickly and matures faster than the Alpine lady fern in substrates which have low levels of nutrients and is outcompeted by the Alpine lady fern in other situations.

It is an upland variety typically found above 750 m on screes made up of siliceous rocks such as quartzite and granite in the Highlands where it is found at only four sites. It is a snow-tolerant species, the snow lie protecting it from frosts. This small, deciduous fern is normally recorded from cool, shaded, north easterly to north westerly facing scree-slopes or where there is scree of large blocks of acidic rocks, particularly in areas where the snow lies late into the Spring and there is melt-water trickling down gullies.

Athyrium flexile was first described in 1853 It is considered by some experts to be a variant of Alpine Lady-fern (*Athyrium distentifolium''' var. flexile) rather than a distinct species.

Regarded as nationally scarce and vulnerable, more than 75% of the population is found in the high Cairngorm mountains including the boulder field plateau of Braeriach and in upper Glen Doll. It is found as high as 900 m in Glen Einich.

References

References

  1. "Athyrium distentifolium var. flexile • Flexile Lady Fern". Roger Golding.
  2. "Biology of Athyrium distentifolium and A. flexile in Scotland". The British Library.
  3. "Athyrium distentifolium var. flexile". Arwystli Networks.
  4. link. (13 October 2010 . JNCC. Retrieved 1 June 2008.)
  5. "Athyrium flexile". Biological Records Centre.
  6. but may be a stunted variety of Alpine Lady-fern ''[[Athyrium distentifolium. A. distentifolium]]'', a single gene mutation accounting for the difference between the two.McHaffie, H. S.; Legg, C. J.; and Ennos, R. A. (December 2001) [https://www.jstor.org/pss/1353720 "A Single Gene with Pleiotropic Effects Accounts for the Scottish Endemic Taxon Athyrium distentifolium var. flexile"] ''New Phytologist'', '''152''' No. 3 pp. 491-500. Retrieved 29 June 2008.
  7. link. (October 23, 2007 Biodiversity Scotland. Retrieved 29 June 2008.)
  8. link. (October 31, 2007 BAP. Retrieved 29 June 2008.)
  9. Shaw, Philip and Thompson, Des (eds.) (2006) ''The Nature of the Cairngorms: Diversity in a changing environment''. Edinburgh. The Stationery Office. {{ISBN. 0-11-497326-1. pp. 221 and 233-34.
  10. [http://www.bsbi.org.uk/Altitudes.rtf "Altitudinal limits of British and Irish vascular plants"] {{Webarchive. link. (2007-04-04 (rtf) Botanical Society of the British Isles. Retrieved 29 June 2008.)

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::

athyriumendemic-flora-of-scotlandhighlands-and-islands-of-scotland