very poisonous plant raven's eye four-leaf paris quadrifolia also known, berry or true lovers knot

melanthiaceae anticoagulant quadrifolia homeopathic background springtime wildflower homeopathy poisonous medicinal poisoning botanical herbparis analgesic freshness fourleaf wildlife woodland medicine elegance growing blossom closeup outdoor natural botanic ravens lovers forest nature spring flower beauty botany poison herbal season plant paris known berry fores green macro flora bloom toxic color also true knot wild leaf herb park lily eye