Water pimpernel : A small white-flowered shrub; brookweed.

Example:


Taxonomy
Samolus, unranked, genus Samolus, family, free encyclopedia, Brookweed, Theophrastaceae, Samolus valerandi, dozen species, the Dutch, Primulaceae, 03-08, Waterplant, Society, water pimpernel, Samolus junceus, Angiosperm, sister group.

Defination from the web:
Water pimpernel) Jump to: navigation, search. Brookweed. S. valerandi. Scientific classification ... Samolus (Brookweed, or water pimpernel) is a widely distributed genus of about a dozen species of water-loving herbs. ...