scentless mayweed (tripleurospermum inodorum). marcescent capitulum closeup

anthesis asteraceae baldr 039 brow belarus flora black background botanical science botany capitulum channeled closeup compositae corolla disc floret false chamomile filament flower focus stacking gynoecium head hemispheric inflorescence ligulate ligule macro mayweed nature peduncle plants ray receptacle scentless solitary terminal tripleurospermum inodorum tubular virtual herbarium wild