yarrow (achillea millefolium). synflorescence detail closeup (pink form

achillea millefolium asteraceae compositae anther anthesis capitulum connate corolla corymb filament floret flower head indumentum inflorescence involucral bract involucre ligulate phyllary pink form variety pollen posterior view ray stamen synflorescence tomentose yarrow common devil 039 nettle milfoil old man pepper sanguinary soldier woundwort seal millefolium detail closeup virtual herbarium belarus flora: focus-stacked closeups wild cultivated plants including flowers leaves fruits intended illustrations botanical manuals