About Lysimachia thyrsiflora L.
Lysimachia thyrsiflora, commonly known as tufted loosestrife, is a plant species belonging to the genus Lysimachia. It is native to large areas of the northern Northern Hemisphere, occurring naturally in both Eurasia and North America. This species most commonly grows in marshes, along the shorelines of lakes and ponds, and can occasionally be found growing alongside streams. It is an erect perennial herb that reaches up to 80 centimeters (31 inches) in height, and produces yellow flowers that are sometimes dotted with purple markings. When it is not blooming, tufted loosestrife may be mistaken for purple loosestrife. The two species can be easily distinguished, however, because purple loosestrife has a square stem. In Asia, tufted loosestrife has been used medicinally to treat high blood pressure. In Britain, tufted loosestrife is classified as a rare species. Within Britain, it grows in three specific wetland vegetation communities recognized by the British National Vegetation Classification system: Salix cinerea - Galium palustre wet woodland (NVC community W1), Salix pentandra - Carex rostrata wet woodland (NVC community W3), and Carex rostrata - Sphagnum recurvum mire (NVC community M4).