Gymnocarpium dryopteris

Tracheophyta PteropsidaWoodsiaceaeGymnocarpiumGymnocarpium dryopteris

Ecology

A gregarious, deciduous fern growing in rocky deciduous woodland and ravines, along stream banks, and on cliff ledges and stable block screes. It prefers moist but open, light-textured mineral soils with a high humus content, and tolerates a moderate range of pH. 0-915 m (Rannoch, Mid Perth).

Status

Native

World Distribution

Circumpolar Boreo-temperate element.

Broad Habitats

Light (Ellenberg): 4

Moisture (Ellenberg): 5

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 4

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 2.2

July Mean Temperature (Celsius): 13.1

Annual Precipitation (mm): 1445

Life form information

Height (cm): 35

Perennation - primary

Perennial

Life Form - primary

Non-bulbous geophyte (rhizome, corm or tuber)

Woodiness

Herbaceous

Clonality - primary

Rhizome far-creeping

Distribution information

Count of 10km squares in Great Britain: 963

Count of 10km squares in Ireland: 10

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.21

Weighted Changed Factor: -13

Weighted Change Factor Confidence (90%)

22

Distribution information

JNCC Designations

NBNSYS0000002083

PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.

Atlas text references

Atlas (14c)
Curtis TGF, McGough HN
1988.  The Irish Red Data Book. 1. Vascular Plants.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1972)
Bangerter EB, Cannon JFM, Jermy AC
1978.  Ferns and their allies. The Island of Mull: a survey of its flora and environment. :12.1-12.7.
Meusel H, Jäger E, Weinert E
1965.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
Page CN
1997.  The ferns of Britain and Ireland, edn 2.