Erica mackaiana

Tracheophyta MagnoliopsidaEricaceaeEricaErica mackaiana


The habitats of this low shrub are blanket mire and rocky wet heath, where it occupies a somewhat narrower range of habitat than E. tetralix, avoiding the wettest sites. It grows on deep peat. The Irish plants of E. mackaiana never set seed. Their pollen fertility varies, but they produce sufficient fertile pollen to hybridise freely with E. tetralix to give the sterile hybrid E. x stuartii. Lowland.



World Distribution

Oceanic Temperate element; restricted to N.W. Spain and Ireland.

Broad Habitats

Light (Ellenberg): 8

Moisture (Ellenberg): 8

Reaction (Ellenberg): 2

Nitrogen (Ellenberg): 1


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 4

July Mean Temperature (Celsius): 13.7

Annual Precipitation (mm): 1593

Life form information

Height (cm): 60

Perennation - primary


Life Form - primary


Life Form - secondary


Comment on Life Form

dwarf shrub



Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 0

Count of 10km squares in Ireland: 10

Count of 10km squares in the Channel Isles: 0

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 (194d)
Curtis TGF, McGough HN
1988.  The Irish Red Data Book. 1. Vascular Plants.
Perring FH, Sell PD
1968.  Critical supplement to the Atlas of the British Flora.
Webb (1955b)