bitter fleabane (erigeron acris). flowering capitulum closeup

androecium anther anthesis asteraceae belarus flora bitter fleabane black background blue botanical science botany capitulum closeup compositae connate corolla disc floret erigeron acris filament flower focus stacking gynoecium head hemispheric inflorescence involucral bract involucre lanceolate ligulate ligule macro nature peduncle phyllary pistil plants pollen ray stamen stigma style triseriate phyllaries tubular villous virtual herbarium