Platanthera chlorantha

Tracheophyta MagnoliopsidaOrchidaceaePlatantheraPlatanthera chlorantha

Ecology

This perennial herb is found in a wide variety of habitats, usually on well-drained calcareous soils. Typical habitats include downland, rough pasture, hay meadows, scrub, woodland and young plantations. It sometimes occurs on sand dunes and railway embankments. Rarely, it grows on slightly acidic soils in moorland and wet, heathy pasture. 0-460 m (Harwood Dale, S. Northumb.).

Status

Native

World Distribution

European Temperate element.

© K.J. Walker, BSBI

Broad Habitats

Light (Ellenberg): 5

Moisture (Ellenberg): 5

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 4

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.4

July Mean Temperature (Celsius): 14.7

Annual Precipitation (mm): 1147

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: 1163

Count of 10km squares in Ireland: 251

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.88

Weighted Changed Factor: 0

Weighted Change Factor Confidence (90%)

47

JNCC Designations

NHMSYS0000461774

Atlas text references

Atlas (337b)
Allan B, Woods P
1993.  Wild orchids of Scotland.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jenkinson MN
1991.  Wild orchids of Dorset.
Sanford M
1991.  The orchids of Suffolk.