Parnassia palustris Linnaeus, 1753
Common names: Marsh grass of Parnassus, Northern grass-of-Parnassus, Bog-star [En], Parnassie des marais [Fr], Parnassia [Nl], Sumpf-Herzblatt [De], Parnassia [It], Hepática blanca [Es]
IUCN Status: LC (Least Concern)
Parc du Marquenterre, SOMME ● France
Description: Hairless perennial plant, growing to 10 to 30cm tall.
The stem is unbranched, angled.
The flower of 15 to 20mm across has five white petals, strongly veined in translucent grey-green lines. It has five groups of yellow stamens alternate with five anthers. At the centre of the flower is a four-lobed stigma.
Biology: It blooms from August to September.
Habitat: Wet moorland, marshes and raised bogs to quite a high altitude.
Distribution: Parnassia palustris is a circumboreal species. Its world distribution encompasses North America, northern and central Asia, North Africa and all of Europe, where it is rare in the south.
Protection: The species is classed as threatened on various national red lists and local conservation measures are required. But it is still widespread with stable populations in parts of its range and therefore the risk of the species going extinct in Europe is quite low.
Plants For A Future
Lansdown R.V., 2014. Parnassia palustris, The IUCN Red List of Threatened Species.