greater celandine tetterwort, swallowwort or chelidonium majus

alkaloid alternative antimicrobial background bloom blooming blossom branch celandine celidonia chelidonia chelidonium close closeup flora flower grass greater green growing herb herbal herbs isolated leaf leaves majus medical medicinal medicine nature nipplewort perennial petal petals pistils plant poisonous swallowwort tetterwort toxic treatment wart weed white wild wildflower wort yellow