medicinal plant polygonum aviculare or common knotgrass

alternative anti antimicrobial antiseptic application astringent aviculare birdweed botany bundle carotene color common crawls diuretic edible flavonoids flora foliage fresh grass green growth healing healthy herb herbal inflammatory infusion ingredient knotgrass knotweed leaf lowgrass medicinal medicine nature notebook organic phytotherapy plant polygonum raw science stem summer tannins useful wild