Dactylorhiza praetermissa

Tracheophyta MagnoliopsidaOrchidaceaeDactylorhizaDactylorhiza praetermissa

Ecology

A tuberous perennial herb of calcareous marshes, fens, damp meadows, roadsides and dune-slacks, and also less acidic bogs and wet heathland. It avoids areas that are inundated for long periods, and is rarely found in drier sites such as chalk downland. It also colonises artificial habitats such as quarries and industrial waste ground. Lowland.

Status

Native

World Distribution

Oceanic Temperate element.

© G. Toone, IWNHAS

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 8

Moisture (Ellenberg): 8

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 3

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.9

July Mean Temperature (Celsius): 15.9

Annual Precipitation (mm): 849

Life form information

Height (cm): 50

Perennation - primary

Perennial

Life Form - primary

Non-bulbous geophyte (rhizome, corm or tuber)

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Distribution information

Count of 10km squares in Great Britain: 1009

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 5

Atlas Change Index: 0.84

Weighted Changed Factor: 29

Weighted Change Factor Confidence (90%)

23

Distribution information

JNCC Designations

NHMSYS0000457949

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 (341c)
Bateman & Denholm (1983a)
Jenkinson MN
1991.  Wild orchids of Dorset.
Sanford M
1991.  The orchids of Suffolk.
Sell P [D ], Murrell G
1996.  Flora of Great Britain and Ireland, 5. Butomaceae-Orchidaceae.