bright yellow greater celandine flower, selective focus on a green bokeh background - chelidonium majus.

flower bright green yellow bokeh celandine background chelidonium focus nature wildflower herbal toxic medicinal medicine botany flora springtime growth european herbalism sunny herb spring chelerythrine garden allocryptopine dark coptisine traditional europe norchelidonine shadow herbaceous environment organic sanguinarine invasive poisonous homeopathy perennial