Water Violier (Hottonia palustris) is a plant with submerged leaves occurs in shallow waters. The species is an indicator for seepage and tolerate much shade. The water stock is the only Dutch representative of the genus Hottonia that the world has another kind: Hottonia inflata from North America.
The leaves of this species and some parts are pectinate, with linear lobes. The upper part of the flower stalk, the flower and steal the chalice (the parts of the plant that are above water) are glandular hairs. The corolla is pale lilac to white, with a yolk-yellow throat.
Water Violier occurs in central England and south-western France, through Central Europe to Eastern Europe. The plant is an inhabitant of nutrient-poor waters in lowlands. The plant tolerates no salt and therefore recently disappeared from parts of Holland, where the water drainage purposes and the removal of fresh water for drinking water has become brackish light.
The genus is named after Peter Hotton (1648-1709), Leiden professor and pastor of Boerhaave.