Asplenium ruta-muraria

Tracheophyta PteropsidaAspleniaceaeAspleniumAsplenium ruta-muraria


This perennial, evergreen fern occurs naturally on limestone and other basic rocks, where it grows on steep, bare faces and in crevices; it is also found in hollowed clints in limestone pavement. However, in most lowland areas it is now abundant on mortared walls and other man-made structures. 0-625 m (Ingleborough, Mid-W. Yorks.).



World Distribution

Circumpolar Temperate element, with a disjunct distribution.

© G. Toone, IWNHAS

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 3

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 2

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 14.7

Annual Precipitation (mm): 1074

Height (cm): 12

Perennation - primary


Life Form - primary




Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 2184

Count of 10km squares in Ireland: 898

Count of 10km squares in the Channel Isles: 11

Atlas Change Index: 0.15

Weighted Changed Factor: 5

Weighted Change Factor Confidence (90%)


JNCC Designations


Atlas text references

Atlas (8d)
Grime JP, Hodgson JG, Hunt R
1988.  Comparative Plant Ecology.
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.