Parnassia palustris

Tracheophyta MagnoliopsidaSaxifragaceaeParnassiaParnassia palustris

Ecology

A perennial, shortly rhizomatous herb of base-rich flushes in short grassland, mires, fens, dune-slacks and machair. The last two habitats support the coastal ecotype, var. condensata. 0-1005 m on Ben Lawers (Mid Perth).

Status

Native

World Distribution

Circumpolar Boreo-temperate element.

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

July Mean Temperature (Celsius): 13.7

Annual Precipitation (mm): 1236

Height (cm): 20

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 1091

Count of 10km squares in Ireland: 302

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.84

Weighted Changed Factor: -12

Weighted Change Factor Confidence (90%)

24

JNCC Designations

NBNSYS0000003512

Atlas text references

Atlas (140a)
Gornall RJ
1988.  The coastal ecodeme of Parnassia palustris L. Watsonia. 17:139-143.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Hultgård UM
1987.  Parnassia palustris L. in Scandinavia. Symbolae Botanicae Upsaliensis. 28(1):1-128.
Jalas & Suominen (1999)
Meusel H, Jäger E, Weinert E
1965.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
Wentworth JE, Gornall RJ
1996.  Cytogenetic evidence for autopolyploidy in Parnassia palustris. New Phytologist. 134:641-648.