frame with bidens flower, beggarticks medicinal plant watercolor on white background. yellow

botanical isolated herb illustration bidens tripartita flower burmarigold watercolor frame wild plant blossom meadow flora drawing design wildflower bloom bouquet white herbal art background medicative painting apothecary cosmetic medicine pharmacy natural botany leaves spring bunch bud fresh herbs blooming supplement leaf nature beggartick sunflower leafybracted three lobe summer sun