scentless mayweed (tripleurospermum inodorum). leaf closeup

asteraceae baldr 039 brow belarus flora compositae tripleurospermum inodorum adaxial black background botanical science botany closeup elliptical false chamomile focus stacking lamina leaf blade vein linear segment macro mayweed nature oblong obovate petiole pinnatisect plants scentless tripinnatisect venation virtual herbarium wild obtuse apex acute