Diphasiastrum alpinum

Tracheophyta LycopodiopsidaLycopodiaceaeDiphasiastrumDiphasiastrum alpinum


An evergreen herb of short acidic grassland on mountains and moors, where it grows on moist but well-drained, thin peaty soils, especially those directly overlying rocks. More rarely it occurs on acidic sands. Vegetative propagation is much more frequent than sexual reproduction, which usually takes place on bare, disturbed ground. 0-1220 m (Ben Macdui, Banffs.).



World Distribution

Circumpolar Arctic-montane element, with a disjunct distribution.

© O.L. Pescott

Broad Habitats

Montane habitats (acid grassland and heath with montane species)

Light (Ellenberg): 7

Moisture (Ellenberg): 5

Reaction (Ellenberg): 2

Nitrogen (Ellenberg): 2


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 1.9

July Mean Temperature (Celsius): 12.4

Annual Precipitation (mm): 1686

Life form information

Height (cm): 10

Perennation - primary


Life Form - primary




Clonality - primary

Rhizome far-creeping

Distribution information

Count of 10km squares in Great Britain: 539

Count of 10km squares in Ireland: 49

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.51

Weighted Changed Factor: 15

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


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 (2a)
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.