adder’s wort

Synonyms in a broader sense Latin name: Polygonum bistoria Folk name: Calf’s tongue, viper’s wort, toothbrush Family: Knotweed plants Plant description The plant grows up to 120 cm high from a flattened, inside reddish-brown colored rootstock. On a triangular stem, the cylindrical flower grows at the upper end, light to dark pink. Flowering time: Early … Snake knotweed