scentless mayweed (tripleurospermum inodorum). flowering capitulum closeup

anthesis asteraceae baldr 039 brow belarus flora black background botanical science botany capitulum channeled closeup compositae false chamomile floret flower focus stacking glabrous head inflorescence involucral bract involucre ligulate ligule macro mayweed multiseriate narrowly triangular nature oblong peduncle phyllary plants ray scarious margin scentless solitary terminal triangularovate tripleurospermum inodorum virtual herbarium wild