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

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.9

July Mean Temperature (Celsius): 15.9

Annual Precipitation (mm): 849

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

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

JNCC Designations

NHMSYS0000457949

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.