Pseudorchis albida

Tracheophyta MagnoliopsidaOrchidaceaePseudorchisPseudorchis albida


A tuberous perennial herb of well-drained hill pastures, streamsides, mountain grasslands and cliff ledges on a range of dry, acidic or calcareous soils; also on recently burnt moorland, but not persisting when Calluna regrows. Rarely, it occurs in acidic Quercus woodland. 0-550 m (Ben Chaisteil, Main Argyll).



World Distribution

European Boreal-montane element; also in N. America.

© K.J. Walker, BSBI

Broad Habitats

Light (Ellenberg): 8

Moisture (Ellenberg): 5

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 2


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 2.6

July Mean Temperature (Celsius): 13

Annual Precipitation (mm): 1534

Life form information

Height (cm): 20

Perennation - primary


Life Form - primary

Non-bulbous geophyte (rhizome, corm or tuber)



Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 385

Count of 10km squares in Ireland: 110

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.88

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 (337a)
Allan B, Woods P
1993.  Wild orchids of Scotland.
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.
Meusel H, Jäger E, Weinert E
1965.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.