scentless mayweed (tripleurospermum inodorum). fruiting capitulum closeup

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