Lichtensteinia pyrethrifolia.
Botanical name:
Classic texts: Sturtevant 1919.
Classic texts: Sturtevant 1919.
Lichtensteinia interrupta (Thunb.) E. Mey. ex Sond.
Bot. syn.: Lichtensteinia pyrethrifolia Cham. & Schltdl., Oenanthe interrupta Thunb.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.